{"title":"Marine Gaskets, Seals \u0026 O-Rings","description":"\u003csection class=\"mm-gso-collection\"\u003e\n  \u003cdiv class=\"mm-gso-hero\"\u003e\n    \u003cdiv class=\"mm-gso-hero__content\"\u003e\n      \u003cp class=\"mm-gso-eyebrow\"\u003eMarine Gaskets, Seals \u0026amp; O-Rings\u003c\/p\u003e\n      \u003ch1\u003e\u003cspan style=\"color:#ffffff;\"\u003eEngine Gaskets, O-Rings, Oil Seals, Water Seals, Bellows, Washers \u0026amp; Sealing Kits\u003c\/span\u003e\u003c\/h1\u003e\n      \u003cp class=\"mm-gso-lead\"\u003eShop marine gaskets, seals, O-rings, sealing washers, bellows, and service kits for engines, drives, cooling systems, fuel systems, exhaust, pumps, filters, housings, and routine maintenance repairs.\u003c\/p\u003e\n      \u003cdiv class=\"mm-gso-actions\"\u003e\n        \u003ca class=\"mm-gso-btn mm-gso-btn--primary\" href=\"https:\/\/marisolmarine.com\/collections\/gaskets-seals-o-rings#mm-gso-products\"\u003eShop Gaskets \u0026amp; Seals\u003c\/a\u003e\n        \u003ca class=\"mm-gso-btn\" href=\"https:\/\/marisolmarine.com\/search?q=Engine+Gasket\"\u003eEngine Gaskets\u003c\/a\u003e\n        \u003ca class=\"mm-gso-btn\" href=\"https:\/\/marisolmarine.com\/search?q=O-Ring\"\u003eO-Rings\u003c\/a\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"mm-gso-callout\"\u003e\n        \u003cdiv\u003e\n\u003cspan class=\"mm-gso-callout-label\"\u003eFitment Check\u003c\/span\u003e\u003cp\u003eMatch sealing parts by engine brand, serial number, drive model, part number, service location, material, size, and the fluid or pressure being sealed.\u003c\/p\u003e\n\u003c\/div\u003e\n        \u003ca class=\"mm-gso-callout-link\" href=\"https:\/\/marisolmarine.com\/pages\/marisol-parts-desk\"\u003eAsk Parts Desk\u003c\/a\u003e\n      \u003c\/div\u003e\n      \u003cp class=\"mm-gso-note\"\u003eGaskets and seals can look simple, but the wrong thickness, profile, material, or diameter can cause leaks, overheating, water intrusion, or repeat service work.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cnav aria-label=\"Gaskets seals and O-rings quick links\" class=\"mm-gso-nav\"\u003e\n    \u003ca href=\"#mm-gso-oem\"\u003eTop OEM\u003c\/a\u003e\u003ca href=\"#mm-gso-quick\"\u003eQuick Shop\u003c\/a\u003e\u003ca href=\"#mm-gso-systems\"\u003eSystems\u003c\/a\u003e\u003ca href=\"#mm-gso-service\"\u003eFitment Help\u003c\/a\u003e\u003ca href=\"#mm-gso-related\"\u003eRelated Parts\u003c\/a\u003e\u003ca href=\"#mm-gso-faq\"\u003eFAQ\u003c\/a\u003e\n  \u003c\/nav\u003e\n\n  \u003cdiv class=\"mm-gso-search-panel\"\u003e\n    \u003cdiv\u003e\n\u003cp class=\"mm-gso-kicker\"\u003eFind Sealing Parts Faster\u003c\/p\u003e\n\u003ch2\u003eSearch by Part Number, Engine, Drive, Size, or Service Area\u003c\/h2\u003e\n\u003cp\u003eUse the search box for exact part numbers, engine serial numbers, drive models, gasket sets, O-rings, oil seals, water pump gaskets, exhaust gaskets, fuel seals, and seal kits.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cform action=\"https:\/\/marisolmarine.com\/search\" method=\"get\" class=\"mm-gso-search-form\"\u003e\n\u003cinput type=\"text\" name=\"q\" placeholder=\"Example: valve cover gasket, shaft seal, impeller gasket, O-ring...\"\u003e\u003cbutton type=\"submit\"\u003eSearch\u003c\/button\u003e\n\u003c\/form\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"mm-gso-oem-wrap\" id=\"mm-gso-oem\"\u003e\n    \u003cp class=\"mm-gso-kicker\"\u003eShop Sealing Parts by Top OEM\u003c\/p\u003e\n    \u003cdiv class=\"mm-gso-oem-grid\"\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/collections\/volvo-penta-gaskets-seals\"\u003e\u003cstrong\u003eVolvo Penta\u003c\/strong\u003e\u003cspan\u003eVolvo Penta gaskets, O-rings, seals, bellows, washers, and sealing kits\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=MerCruiser+Gasket+Seal+O-Ring\"\u003e\u003cstrong\u003eMercury \/ MerCruiser\u003c\/strong\u003e\u003cspan\u003eMerCruiser engine gaskets, drive seals, exhaust gaskets, and service O-rings\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Yanmar+Gasket+Seal+O-Ring\"\u003e\u003cstrong\u003eYanmar\u003c\/strong\u003e\u003cspan\u003eDiesel engine gaskets, fuel seals, cooling seals, O-rings, and service kits\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Crusader+Gasket+Seal+O-Ring\"\u003e\u003cstrong\u003eCrusader\u003c\/strong\u003e\u003cspan\u003eInboard engine gaskets, exhaust seals, valve cover gaskets, and O-rings\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Indmar+Gasket+Seal+O-Ring\"\u003e\u003cstrong\u003eIndmar\u003c\/strong\u003e\u003cspan\u003eWake boat engine gaskets, seals, O-rings, and service sealing parts\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=PCM+Gasket+Seal+O-Ring\"\u003e\u003cstrong\u003ePCM\u003c\/strong\u003e\u003cspan\u003ePCM engine gaskets, oil seals, cooling seals, exhaust gaskets, and O-rings\u003c\/span\u003e\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"mm-gso-nano-wrap\" id=\"mm-gso-quick\"\u003e\n    \u003cp class=\"mm-gso-kicker\"\u003ePopular Gasket, Seal \u0026amp; O-Ring Searches\u003c\/p\u003e\n    \u003cdiv class=\"mm-gso-nano-grid\"\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Engine+Gasket\"\u003e\u003cstrong\u003eEngine Gaskets\u003c\/strong\u003e\u003cspan\u003eGeneral engine gaskets for service, repair, and reassembly\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Gasket+Set\"\u003e\u003cstrong\u003eGasket Sets\u003c\/strong\u003e\u003cspan\u003eGrouped gasket kits, service sets, and overhaul sealing searches\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=O-Ring\"\u003e\u003cstrong\u003eO-Rings\u003c\/strong\u003e\u003cspan\u003eO-rings for pumps, filters, coolers, fittings, sensors, and housings\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Oil+Seal\"\u003e\u003cstrong\u003eOil Seals\u003c\/strong\u003e\u003cspan\u003eCrankshaft, shaft, gearcase, pump, and lubrication sealing searches\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Water+Seal\"\u003e\u003cstrong\u003eWater Seals\u003c\/strong\u003e\u003cspan\u003eRaw-water, coolant, pump, and heat exchanger sealing parts\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Head+Gasket\"\u003e\u003cstrong\u003eHead Gaskets\u003c\/strong\u003e\u003cspan\u003eCylinder head gaskets and top-end sealing support\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Valve+Cover+Gasket\"\u003e\u003cstrong\u003eValve Cover Gaskets\u003c\/strong\u003e\u003cspan\u003eValve cover, rocker cover, and upper engine gasket searches\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Exhaust+Gasket\"\u003e\u003cstrong\u003eExhaust Gaskets\u003c\/strong\u003e\u003cspan\u003eManifold, riser, elbow, turbo, and exhaust sealing parts\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Drive+Seal\"\u003e\u003cstrong\u003eDrive Seals\u003c\/strong\u003e\u003cspan\u003eSterndrive, gearcase, prop shaft, shift shaft, and water seals\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Bellows\"\u003e\u003cstrong\u003eBellows\u003c\/strong\u003e\u003cspan\u003eU-joint bellows, exhaust bellows, shift bellows, clamps, and kits\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Seal+Kit\"\u003e\u003cstrong\u003eSeal Kits\u003c\/strong\u003e\u003cspan\u003eGrouped seal kits for pumps, drives, trim, fuel, and service jobs\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Sealing+Washer\"\u003e\u003cstrong\u003eSealing Washers\u003c\/strong\u003e\u003cspan\u003eCopper washers, crush washers, drain seals, and plug washers\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Fuel+Seal\"\u003e\u003cstrong\u003eFuel Seals\u003c\/strong\u003e\u003cspan\u003eFuel filter, injector, carburetor, pump, and fitting sealing parts\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Cooling+Gasket\"\u003e\u003cstrong\u003eCooling Gaskets\u003c\/strong\u003e\u003cspan\u003eWater pump, thermostat, heat exchanger, and cooler gaskets\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Impeller+Gasket\"\u003e\u003cstrong\u003eImpeller Gaskets\u003c\/strong\u003e\u003cspan\u003eRaw-water pump gaskets, cover seals, wear plates, and service parts\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/search?q=Drain+Plug+Seal\"\u003e\u003cstrong\u003eDrain Plug Seals\u003c\/strong\u003e\u003cspan\u003eOil, coolant, fuel, and drive drain plug sealing washer searches\u003c\/span\u003e\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"mm-gso-grid\" id=\"mm-gso-systems\"\u003e\n    \u003cdiv class=\"mm-gso-card\"\u003e\n      \u003cp class=\"mm-gso-kicker\"\u003eEngine Sealing\u003c\/p\u003e\n      \u003ch2\u003eGaskets for Maintenance, Repairs, and Reassembly\u003c\/h2\u003e\n      \u003cp\u003eEngine sealing parts include valve cover gaskets, head gaskets, intake gaskets, oil pan gaskets, timing cover seals, thermostat gaskets, pump gaskets, sealing washers, and O-rings.\u003c\/p\u003e\n      \u003cdiv class=\"mm-gso-buttons\"\u003e\n\u003ca href=\"https:\/\/marisolmarine.com\/search?q=Oil+Pan+Gasket\"\u003eOil Pan Gaskets\u003c\/a\u003e\u003ca href=\"https:\/\/marisolmarine.com\/search?q=Intake+Gasket\"\u003eIntake Gaskets\u003c\/a\u003e\u003ca href=\"https:\/\/marisolmarine.com\/search?q=Rocker+Cover+Gasket\"\u003eRocker Cover Gaskets\u003c\/a\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"mm-gso-card mm-gso-card--blue\"\u003e\n      \u003cp class=\"mm-gso-kicker\"\u003eWater, Oil \u0026amp; Drive Sealing\u003c\/p\u003e\n      \u003ch2\u003eSeals That Keep Fluids Where They Belong\u003c\/h2\u003e\n      \u003cp\u003eOil seals, water seals, shaft seals, drive seals, bellows, drain plug washers, pump cover gaskets, and O-rings help keep oil in, water out, and systems protected.\u003c\/p\u003e\n      \u003cdiv class=\"mm-gso-buttons\"\u003e\n\u003ca href=\"https:\/\/marisolmarine.com\/search?q=Shaft+Seal\"\u003eShaft Seals\u003c\/a\u003e\u003ca href=\"https:\/\/marisolmarine.com\/search?q=Water+Pump+Gasket\"\u003eWater Pump Gaskets\u003c\/a\u003e\u003ca href=\"https:\/\/marisolmarine.com\/search?q=Plug+Washer\"\u003ePlug Washers\u003c\/a\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"mm-gso-info-grid\"\u003e\n    \u003cdiv class=\"mm-gso-panel\"\u003e\n\u003cspan class=\"mm-gso-panel-icon\"\u003eLOC\u003c\/span\u003e\u003ch3\u003eMatch the Exact Location\u003c\/h3\u003e\n\u003cp\u003eA seal for a pump, drive, cooler, injector, filter, or drain plug may have a similar name but a different size, material, or profile.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"mm-gso-panel mm-gso-panel--blue\"\u003e\n\u003cspan class=\"mm-gso-panel-icon\"\u003eSER\u003c\/span\u003e\u003ch3\u003eUse Serial Numbers\u003c\/h3\u003e\n\u003cp\u003eSealing parts can change across engine families and production ranges. Serial number and part number are the best starting points.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"mm-gso-panel\"\u003e\n\u003cspan class=\"mm-gso-panel-icon\"\u003eKIT\u003c\/span\u003e\u003ch3\u003eCheck Related Parts\u003c\/h3\u003e\n\u003cp\u003eSome repairs need several sealing parts at once: gaskets, O-rings, washers, clamps, bellows, hardware, sealant, or service kits.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"mm-gso-service-section\" id=\"mm-gso-service\"\u003e\n    \u003cdiv class=\"mm-gso-service-copy\"\u003e\n      \u003cp class=\"mm-gso-kicker\"\u003eFitment Guidance\u003c\/p\u003e\n      \u003ch2\u003eSmall Sealing Parts Can Decide the Whole Repair\u003c\/h2\u003e\n      \u003cp\u003eA wrong gasket or seal can lead to leaks, overheating, fuel smell, oil contamination, water intrusion, exhaust leaks, or repeat labor. Search by the original part number when possible, or send the Parts Desk the engine and service details.\u003c\/p\u003e\n      \u003cdiv class=\"mm-gso-buttons\"\u003e\n\u003ca href=\"https:\/\/marisolmarine.com\/pages\/marisol-parts-desk\"\u003eAsk Parts Desk\u003c\/a\u003e\u003ca href=\"https:\/\/marisolmarine.com\/search?q=Gasket+Kit\"\u003eGasket Kits\u003c\/a\u003e\u003ca href=\"https:\/\/marisolmarine.com\/search?q=Sealing+Ring\"\u003eSealing Rings\u003c\/a\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"mm-gso-service-list\"\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eHave the old part handy\u003c\/strong\u003e\u003cspan\u003ePhotos of the gasket, seal, O-ring, package label, or service location can help confirm the correct replacement.\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eSearch clearly\u003c\/strong\u003e\u003cspan\u003eTry part number first, then engine brand plus the exact item: exhaust gasket, shaft seal, impeller O-ring, or drain washer.\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eConfirm material and size\u003c\/strong\u003e\u003cspan\u003eO-rings and seals may differ by fluid type, diameter, thickness, shape, temperature range, and pressure.\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv\u003e\n\u003cstrong\u003eInspect the surface\u003c\/strong\u003e\u003cspan\u003eClean sealing surfaces, damaged housings, corrosion, worn shafts, and improper sealant can cause repeat leaks.\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"mm-gso-related\" id=\"mm-gso-related\"\u003e\n    \u003cp class=\"mm-gso-kicker\"\u003eRelated Maintenance and Repair Parts\u003c\/p\u003e\n    \u003ch2\u003eComplete the Repair Around the Seal\u003c\/h2\u003e\n    \u003cdiv class=\"mm-gso-related-grid\"\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/collections\/volvo-penta-gaskets-seals\"\u003e\u003cstrong\u003eVolvo Penta Gaskets \u0026amp; Seals\u003c\/strong\u003e\u003cspan\u003eVolvo Penta sealing parts, O-rings, bellows, washers, and kits\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/collections\/thermostats-cooling-components\"\u003e\u003cstrong\u003eCooling Components\u003c\/strong\u003e\u003cspan\u003eThermostats, housings, gaskets, caps, senders, pumps, and cooling hardware\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/collections\/impellers\"\u003e\u003cstrong\u003eImpellers \u0026amp; Pump Service\u003c\/strong\u003e\u003cspan\u003eRaw-water impellers, pump gaskets, cover seals, and pump service items\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/collections\/exhaust\"\u003e\u003cstrong\u003eExhaust\u003c\/strong\u003e\u003cspan\u003eManifolds, risers, elbows, exhaust hose, clamps, gaskets, and seals\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/collections\/fuel-filters\"\u003e\u003cstrong\u003eFuel Filters\u003c\/strong\u003e\u003cspan\u003eFuel filter gaskets, O-rings, bowls, housings, drains, and service parts\u003c\/span\u003e\u003c\/a\u003e\n      \u003ca href=\"https:\/\/marisolmarine.com\/collections\/oil-filters\"\u003e\u003cstrong\u003eOil Filters\u003c\/strong\u003e\u003cspan\u003eOil filter gaskets, seals, drain parts, and routine oil-service support\u003c\/span\u003e\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"mm-gso-faq\" id=\"mm-gso-faq\"\u003e\n    \u003cp class=\"mm-gso-kicker\"\u003eGaskets, Seals \u0026amp; O-Rings FAQ\u003c\/p\u003e\n    \u003ch2\u003eChoosing the Right Sealing Parts\u003c\/h2\u003e\n    \u003cdetails\u003e\u003csummary\u003eShould I search by part number or by the part name?\u003c\/summary\u003e\u003cp\u003eSearch by part number first whenever possible. If you do not have it, search by engine brand, serial number, and the exact sealing location.\u003c\/p\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eAre O-rings, gaskets, and seals interchangeable?\u003c\/summary\u003e\u003cp\u003eNo. O-rings, flat gaskets, sealing washers, and oil seals are designed for different surfaces, fluids, pressures, and movement. Match the original style and fitment.\u003c\/p\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eShould I replace related sealing parts during service?\u003c\/summary\u003e\u003cp\u003eOften, yes. Many jobs also need O-rings, washers, bellows, clamps, hardware, or a service kit so the repair can be completed cleanly.\u003c\/p\u003e\u003c\/details\u003e\n    \u003cdetails\u003e\u003csummary\u003eCan the Parts Desk help identify a gasket or seal?\u003c\/summary\u003e\u003cp\u003eYes. Send the engine or drive serial number, old part number if available, photos, measurements, and where the part installs.\u003c\/p\u003e\u003c\/details\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"mm-gso-bottom\"\u003e\n    \u003ch2\u003eShop Marine Gaskets, Seals \u0026amp; O-Rings\u003c\/h2\u003e\n    \u003cp\u003eFind the sealing parts needed to finish marine engine, drive, cooling, fuel, exhaust, pump, filter, and maintenance repairs with confidence.\u003c\/p\u003e\n    \u003cdiv class=\"mm-gso-actions mm-gso-actions--center\"\u003e\n\u003ca class=\"mm-gso-btn mm-gso-btn--primary\" href=\"https:\/\/marisolmarine.com\/collections\/gaskets-seals-o-rings#mm-gso-products\"\u003eShop Gaskets \u0026amp; Seals\u003c\/a\u003e\u003ca class=\"mm-gso-btn\" href=\"https:\/\/marisolmarine.com\/pages\/marisol-parts-desk\"\u003eConfirm Fitment\u003c\/a\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cspan id=\"mm-gso-products\" class=\"mm-gso-product-anchor\" aria-hidden=\"true\"\u003e\u003c\/span\u003e\n\u003c\/section\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Should I search by part number or by the part name?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Search by part number first whenever possible. If you do not have it, search by engine brand, serial number, and the exact sealing location.\"}},{\"@type\":\"Question\",\"name\":\"Are O-rings, gaskets, and seals interchangeable?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. O-rings, flat gaskets, sealing washers, and oil seals are designed for different surfaces, fluids, pressures, and movement. Match the original style and fitment.\"}},{\"@type\":\"Question\",\"name\":\"Should I replace related sealing parts during service?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Often, yes. Many jobs also need O-rings, washers, bellows, clamps, hardware, or a service kit so the repair can be completed cleanly.\"}},{\"@type\":\"Question\",\"name\":\"Can the Parts Desk help identify a gasket or seal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. 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This kit provides the sealing components needed when removing, servicing, or reinstalling the alternator — restoring a proper seal at the alternator mounting area and preventing oil or moisture ingress after reassembly. Replace this kit any time the alternator is removed or when existing gaskets show cracking, compression set, or leaking.\u003c\/p\u003e\n\n\u003ch3\u003ePart Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e A4867HA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternate Part Number:\u003c\/strong\u003e 23801B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 23801B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Borg Warner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Alternator Gasket \u0026amp; Seal Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Engine electrical – charging system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New OEM replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMarine inboard engines equipped with Borg Warner alternators specifying part number A4867HA or 23801B\u003c\/li\u003e\n\u003cli\u003eConfirm fitment against your engine model, alternator arrangement, and parts diagram before ordering\u003c\/li\u003e\n\u003cli\u003eCross-reference both part numbers — A4867HA and 23801B are interchangeable references for this kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKit Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAlternator gasket(s) and seal(s) as specified for the A4867HA \/ 23801B application\u003c\/li\u003e\n\u003cli\u003eConfirm specific contents against your service manual for your alternator model\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSystem \u0026amp; Diagram Position\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Charging system – alternator assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagram position:\u003c\/strong\u003e Alternator mounting \/ sealing interface — refer to your engine parts diagram under the charging system section for exact location\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAny time the alternator is removed for service or replacement\u003c\/li\u003e\n\u003cli\u003eWhen existing gaskets or seals show cracking, hardening, compression set, or tearing\u003c\/li\u003e\n\u003cli\u003eWhen an oil or moisture leak is traced to the alternator mounting area\u003c\/li\u003e\n\u003cli\u003eAs part of a scheduled charging system overhaul\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eClean all mating surfaces thoroughly and remove all traces of old gasket material before fitting new seals\u003c\/li\u003e\n\u003cli\u003eInspect mounting surfaces for warping, scoring, or corrosion before reassembly\u003c\/li\u003e\n\u003cli\u003eTorque all fasteners evenly to the specification in your engine service manual\u003c\/li\u003e\n\u003cli\u003eDo not reuse old gaskets or seals — always install new components from this kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/crusader-damper-plate-302-351-sae-0-borgwarner-oem-part-r140001\"\u003eCrusader Damper Plate 302\/351 – SAE #0 \/ BorgWarner (R140001)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe best time to replace this gasket and seal kit is while the alternator is already off the engine — the labour to remove and reinstall the alternator far exceeds the cost of the kit, so reusing old seals to save a few dollars is a false economy that often leads to a repeat job. The most common issue is customers ordering based on part number alone without confirming which alternator model is fitted to their engine; Borg Warner supplied alternators across a range of marine inboard applications, and the mounting and sealing configuration can vary. Always cross-reference A4867HA or 23801B against your engine’s parts diagram and confirm the alternator model number on the unit itself before ordering.\u003c\/p\u003e","brand":"BOR","offers":[{"title":"Default Title","offer_id":43563778965540,"sku":"23801B","price":110.86,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/s-l1200_167872e2-373c-428b-a4c5-d75e43cc0d3e.jpg?v=1778783210"},{"product_id":"borg-warne-2","title":"Borg Warner Front Pump Gasket 3-61","description":"\u003cp\u003eOEM Borg Warner front pump gasket engineered for reliable sealing performance in marine transmissions. Precision-cut to exact specifications for proper fit and long-term durability in demanding marine environments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Borg Warner OEM part number 3-61\u003c\/li\u003e\n\u003cli\u003eMarine-grade gasket material for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eEnsures proper front pump seal integrity\u003c\/li\u003e\n\u003cli\u003ePrevents transmission fluid leaks\u003c\/li\u003e\n\u003cli\u003eDirect replacement for Borg Warner marine transmissions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e Compatible with select Borg Warner marine transmission models. Verify part number compatibility before ordering.\u003c\/p\u003e","brand":"BOR","offers":[{"title":"Default Title","offer_id":43563779031076,"sku":"3-61","price":9.11,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/bbe90589-8428-4434-a997-818eb822a031.png?v=1778732612"},{"product_id":"crusader-tbi-plenum-gasket-rm0251","title":"Crusader Throttle Body Mounting Gasket | MP7.4L MP8.1L MP6.0L | OEM Part RM0251","description":"\u003ch2\u003eCrusader Throttle Body Mounting Gasket — OEM Part RM0251\u003c\/h2\u003e\n\n\u003cp\u003eGenuine Crusader \/ PCM OEM throttle body mounting gasket for compatible Crusader MP7.4L, MP8.1L, and MP6.0L marine engines. RM0251 seals the throttle body to the intake manifold or throttle body adapter plate, preventing unmetered air from entering the intake system. Factory Crusader parts manuals identify RM0251 specifically as the throttle body mounting gasket on multiple gasoline engine families.\u003c\/p\u003e\n\n\u003ch2\u003ePart Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RM0251\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Crusader \/ PCM (Pleasurecraft Marine)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial Product Type:\u003c\/strong\u003e Throttle Body Mounting Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Fuel \u0026amp; Air — Throttle Body \/ Intake\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 gasket per assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e RM0251 is the throttle body mounting gasket, not the main intake manifold gasket. These are different parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCrusader MP7.4L — throttle body mounting gasket as specified in factory parts diagram\u003c\/li\u003e\n\u003cli\u003eCrusader MP8.1L — used directly beneath the mechanical or electronic throttle body assembly\u003c\/li\u003e\n\u003cli\u003eCrusader MP6.0L — used with the R062087 throttle body adapter plate and RA035036B throttle body assembly\u003c\/li\u003e\n\u003cli\u003eCompatible with both mechanical and electronic throttle body configurations depending on engine model\u003c\/li\u003e\n\u003cli\u003eAlways confirm fitment by engine model, serial number, and parts diagram before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDiagram Position\u003c\/h2\u003e\n\u003cp\u003eRM0251 is located at the throttle body-to-intake manifold (or throttle body adapter plate) interface. On MP6.0L engines, factory diagrams show RM0251 used together with the R062087 throttle body adapter plate and a separate throttle body seal — inspect all neighboring components during service.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRM0251\u003c\/strong\u003e — Throttle body mounting gasket (this part)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR062087\u003c\/strong\u003e — MP6.0L throttle body adapter plate (not in store)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRA035036 \/ RA035036A \/ RA035036B\u003c\/strong\u003e — Related mechanical throttle body assemblies (not in store)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRA035041\u003c\/strong\u003e — Related electronic throttle body assembly (not in store)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRM0277\u003c\/strong\u003e — MP6.0L intake manifold gasket set — not the same as RM0251\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWhenever the throttle body is removed for service or cleaning\u003c\/li\u003e\n\u003cli\u003eVisible tearing, compression damage, or deterioration of the gasket\u003c\/li\u003e\n\u003cli\u003eEvidence of an intake air leak — unstable idle, incorrect air metering, or drivability issues\u003c\/li\u003e\n\u003cli\u003eDuring throttle body adapter plate replacement on MP6.0L engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReplace whenever the throttle body is removed — do not reuse a compressed or disturbed gasket\u003c\/li\u003e\n\u003cli\u003eInspect during any intake system service for signs of deterioration or air leakage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean both mating surfaces thoroughly before installation — ensure no old gasket material remains on either surface\u003c\/li\u003e\n\u003cli\u003eInstall the gasket in the correct orientation as shown in the Crusader parts diagram\u003c\/li\u003e\n\u003cli\u003eTighten throttle body fasteners to the torque specification in the Crusader service manual\u003c\/li\u003e\n\u003cli\u003eOn MP6.0L applications, inspect the R062087 adapter plate and the separate throttle body seal at the same time\u003c\/li\u003e\n\u003cli\u003eAfter installation, check for intake air leaks at idle before returning the engine to service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs RM0251 the same as the intake manifold gasket?\u003c\/strong\u003e\u003cbr\u003eNo. RM0251 is the throttle body mounting gasket — it seals the throttle body to the intake manifold or adapter plate. The main intake manifold gasket is a separate part (RM0277 on MP6.0L applications). Confirm which gasket you need using the engine parts diagram before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is this sometimes called a TBI or plenum gasket?\u003c\/strong\u003e\u003cbr\u003eRM0251 is informally referred to as a TBI or plenum gasket in some references, but factory Crusader documentation consistently identifies it as the throttle body mounting gasket at the throttle body-to-intake connection. The correct factory name is throttle body mounting gasket.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit both mechanical and electronic throttle body configurations?\u003c\/strong\u003e\u003cbr\u003eYes. RM0251 is used with both mechanical (RA035036 series) and electronic (RA035041) throttle body assemblies depending on the engine model. Confirm the throttle body type and diagram position for your specific engine before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e RM0251 is the correct OEM throttle body mounting gasket for Crusader MP7.4L, MP8.1L, and MP6.0L owners replacing a leaking or damaged throttle body gasket, or for those performing throttle body service where the gasket should be replaced as a matter of course. At $2.00, it is a low-cost item that should always be replaced whenever the throttle body is removed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Customer Issue:\u003c\/strong\u003e The most frequent issue is confusing RM0251 (throttle body mounting gasket) with the intake manifold gasket (RM0277 on MP6.0L). These are different gaskets in different positions. Always confirm the gasket position in the engine parts diagram before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/crusader-pcm-oil-filter-gasket-r077001\"\u003eCrusader \/ PCM Oil Filter with Gasket — R077001\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/crusader-engine-thermostat-143f-r026002e\"\u003eCrusader Thermostat 143°F — R026002E\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pcm-o-ring-20156\"\u003ePCM O-Ring 20156\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pcm-o-ring-22800\"\u003ePCM O-Ring 22800\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pcm-o-ring-22802\"\u003ePCM O-Ring 22802\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CRU","offers":[{"title":"Default Title","offer_id":43563781062692,"sku":"RM0251","price":2.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/RM0251.png?v=1771455708"},{"product_id":"cummins-10","title":"Cummins O-Ring 145530","description":"\u003cp\u003eThe \u003cstrong\u003eCummins 145530 O-Ring\u003c\/strong\u003e is a replacement sealing O-ring used on compatible Cummins engine or marine system assemblies. O-rings are critical service parts designed to seal fluid or air passages between mating components, helping prevent leaks, pressure loss, contamination, and repeat service issues.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReplacement Cummins O-ring\u003c\/li\u003e\n\u003cli\u003eUsed for sealing compatible Cummins assemblies where \u003cstrong\u003e145530\u003c\/strong\u003e is specified\u003c\/li\u003e\n\u003cli\u003eHelps prevent fluid, oil, coolant, fuel, or air leakage depending on application\u003c\/li\u003e\n\u003cli\u003eSuitable for maintenance, rebuild, and component service work\u003c\/li\u003e\n\u003cli\u003eCorrect replacement when the original parts breakdown calls for \u003cstrong\u003e145530\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFor Cummins applications that specify \u003cstrong\u003eO-ring 145530\u003c\/strong\u003e in the parts diagram or service breakdown.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by engine model, component assembly, and original part number before ordering. Cummins O-rings can vary by diameter, thickness, material, and application, even when they look similar.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this O-ring whenever the related component is removed, when the old seal is flattened, cracked, swollen, brittle, cut, or leaking. Reusing old O-rings can cause repeat leaks after reassembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eClean the sealing groove and mating surface before installation. Lightly lubricate the O-ring with the correct fluid if required by the service procedure, and avoid twisting, stretching, or pinching the seal during assembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e145530\u003c\/strong\u003e — Cummins O-ring reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSmall seals are often the reason a repair has to be reopened. If the part is already apart, replacing the O-ring is usually the safer move than trying to reuse a compressed old seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"CUM","offers":[{"title":"Default Title","offer_id":43563783290916,"sku":"145530","price":3.32,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/download_c3e6ef95-b294-43fd-899a-85a7a09f4a59.jpg?v=1778781552"},{"product_id":"cummins-o-ring-seal-145545","title":"Cummins O-Ring Seal 145545","description":"\u003cp\u003eGenuine Cummins OEM O-ring seal engineered for reliable sealing performance in marine diesel engines. This precision-manufactured O-ring provides effective sealing against fluids and gases, ensuring leak-free operation and long-term durability in demanding marine applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Cummins OEM part number 145545\u003c\/li\u003e\n\u003cli\u003ePrecision-engineered for exact fit\u003c\/li\u003e\n\u003cli\u003eHigh-quality construction for marine environments\u003c\/li\u003e\n\u003cli\u003eProvides effective sealing against fluids and gases\u003c\/li\u003e\n\u003cli\u003eDurable design for long service life\u003c\/li\u003e\n\u003cli\u003eOEM-quality replacement O-ring seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e Cummins marine diesel engines requiring O-ring seal part number 145545 (verify compatibility with your engine model using part number)\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e Cummins part number 145545, OEM O-ring seal\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation Note:\u003c\/strong\u003e Ensure proper installation in clean, undamaged sealing surfaces. Lubricate O-ring with appropriate lubricant before installation. Replace O-rings showing signs of damage, cracking, or deterioration. Follow manufacturer installation procedures.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Item may not be exactly as shown, but part number is always correct.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"CUM","offers":[{"title":"Default Title","offer_id":43563783323684,"sku":"145545","price":22.81,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/702808a4-7cae-468d-9608-08ef9d137aa4_16c605c3-bd94-43f1-9e32-95c30c6f41a4.png?v=1772848490"},{"product_id":"cummins-12","title":"Cummins O-Ring Seal 145582","description":"\u003cp\u003eThe \u003cstrong\u003eCummins 145582 O-Ring Seal\u003c\/strong\u003e is a replacement sealing ring used on compatible Cummins engine and marine system assemblies. It helps create a reliable seal between mating components, preventing leaks and pressure loss in the specific assembly where this part number is called for.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine-style Cummins replacement O-ring seal\u003c\/li\u003e\n\u003cli\u003eUsed where \u003cstrong\u003e145582\u003c\/strong\u003e is specified in the Cummins parts breakdown\u003c\/li\u003e\n\u003cli\u003eHelps seal oil, coolant, fuel, air, or water passages depending on application\u003c\/li\u003e\n\u003cli\u003eService replacement for maintenance, rebuilds, and component repairs\u003c\/li\u003e\n\u003cli\u003eHelps prevent repeat leaks from reused, flattened, or damaged seals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFor Cummins applications that specify \u003cstrong\u003eO-ring seal 145582\u003c\/strong\u003e by part number in the engine, heat exchanger, cooler, pump, or related component breakdown.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by Cummins engine model, component assembly, and original part number before ordering. O-ring seals can look identical but differ by diameter, thickness, and material.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this seal whenever the related component is removed, or if the old O-ring is cut, swollen, flattened, brittle, cracked, or leaking. Reusing old O-rings can lead to seepage after reassembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eClean the seal groove and mating surface before installation. Lightly lubricate the O-ring with the correct service fluid when required, seat it evenly in the groove, and avoid twisting or pinching during assembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e145582\u003c\/strong\u003e — Cummins O-ring seal reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWith Cummins seals, the safest match is always by exact part number and assembly location. A seal that looks close on the bench may still have the wrong cross-section or material for the job.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"CUM","offers":[{"title":"Default Title","offer_id":43563783356452,"sku":"145582","price":12.66,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/download_b5d256aa-34a6-400c-8ea7-cf25c12c1ee4.png?v=1778781945"},{"product_id":"cummins-36","title":"Cummins Seal Ring 3910530","description":"\u003cp\u003eThe \u003cstrong\u003eCummins 3910530 Rectangular Ring Seal\u003c\/strong\u003e is a genuine OEM Cummins sealing component used primarily on \u003cstrong\u003eEuro 2 5.9 liter B engines\u003c\/strong\u003e. Cummins identifies this part specifically as a \u003cstrong\u003eRectangular Ring Seal\u003c\/strong\u003e, making it more specific than a general seal ring listing.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Cummins OEM sealing component\u003c\/li\u003e\n\u003cli\u003ePart number: \u003cstrong\u003e3910530\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIdentified by Cummins as a \u003cstrong\u003eRectangular Ring Seal\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePrimary application: \u003cstrong\u003eEuro 2 5.9L B engines\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFactory replacement seal for the correct Cummins assembly\u003c\/li\u003e\n\u003cli\u003eShipment height: \u003cstrong\u003e0.1111 in\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUsed primarily on \u003cstrong\u003eCummins Euro 2 5.9 liter B-Series diesel engines\u003c\/strong\u003e. Confirm fitment by engine serial number, CPL, and Cummins parts diagram location before ordering.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCummins rectangular ring seals are application-specific. Verify by engine serial number and diagram location, especially because similar-looking seals can differ by profile, material, and sealing position.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this seal if it is worn, flattened, cut, brittle, leaking, or disturbed during component removal. Reusing an old sealing ring can cause repeat seepage.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eClean the groove and mating surface before installation. Install the rectangular ring seal evenly without twisting, stretching, or pinching it during reassembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e3910530\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe important detail for this part is that Cummins lists it as a \u003cstrong\u003eRectangular Ring Seal\u003c\/strong\u003e for \u003cstrong\u003eEuro 2 5.9L B engines\u003c\/strong\u003e. 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This precision-cut gasket ensures a reliable seal between the exhaust manifold and cylinder head, preventing exhaust leaks and maintaining optimal engine performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOEM-specification design for exact fit\u003c\/li\u003e\n\u003cli\u003eHigh-temperature resistant materials withstand exhaust heat\u003c\/li\u003e\n\u003cli\u003ePrevents exhaust leaks and maintains proper backpressure\u003c\/li\u003e\n\u003cli\u003eMarine-grade construction for durability in harsh environments\u003c\/li\u003e\n\u003cli\u003eDirect replacement part number RM0007\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Compatible with select Crusader marine engines. Verify fitment using your engine model and serial number.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation Note:\u003c\/strong\u003e Always replace exhaust manifold gaskets during manifold service. Clean mating surfaces thoroughly and torque fasteners to manufacturer specifications for proper sealing.\u003c\/p\u003e","brand":"Fairview","offers":[{"title":"Default Title","offer_id":43563801477156,"sku":"RM0007","price":6.69,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/RM0007.png?v=1771469306"},{"product_id":"honda-gasket-19351-zv5-000","title":"Honda - Gasket - 19351-ZV5-000","description":"\u003cp\u003eThe \u003cstrong\u003eHonda 19351-ZV5-000 Gasket\u003c\/strong\u003e is a genuine Honda OEM sealing gasket used across a wide range of Honda BF-series outboards. It is designed for the factory-specified service location shown in the Honda parts diagram and should be replaced whenever the related component is removed.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Honda OEM gasket\u003c\/li\u003e\n\u003cli\u003ePart number: \u003cstrong\u003e19351-ZV5-000\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFits select Honda BF-series outboards\u003c\/li\u003e\n\u003cli\u003eUsed on multiple Honda 25 HP through 130 HP applications\u003c\/li\u003e\n\u003cli\u003eHelps seal the factory-specified mating surface\u003c\/li\u003e\n\u003cli\u003eReplace whenever removed, compressed, torn, or leaking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCompatible with select Honda outboards including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eBF25A \/ BF25D\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF30A \/ BF30D\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF35AM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF40A \/ BF40D\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF45AM\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF50A \/ BF50D\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF75A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF90A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF115A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF130A\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIncludes many A1, A2, A3, A4, A5, A6, AK0, AX, AY, AW, D4, D5, D6, DK0, DK2, and DK3 variants where \u003cstrong\u003e19351-ZV5-000\u003c\/strong\u003e is listed in the Honda parts diagram.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment using your Honda model code, serial number, and exact parts diagram. This gasket appears across many Honda BF-series models, but the correct match depends on the specific diagram location.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this gasket whenever the related part is removed, when the gasket is compressed or torn, or when there is leakage at the matching sealing surface.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eClean both mating surfaces before installation and remove old gasket material carefully. Install the gasket in the correct orientation and use sealant only if specified by the Honda service procedure.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e19351-ZV5-000\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis gasket has broad Honda BF-series coverage, so diagram confirmation matters. Matching by the exact Honda part number is safer than matching by shape alone, especially across different horsepower families.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"HON","offers":[{"title":"Default Title","offer_id":43563814748196,"sku":"19351-ZV5-000","price":6.58,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/8a5b7748-bb75-4aa9-b1d8-7e8bfedab82c.png?v=1779043784"},{"product_id":"honda-o-ring-6-9x1-45-91301-zw4-003","title":"Honda - O-Ring 6.9x1.45 - 91301-ZW4-003","description":"\u003cp\u003eThe \u003cstrong\u003eHonda 91301-ZW4-003 O-Ring\u003c\/strong\u003e is a genuine Honda OEM sealing O-ring sized \u003cstrong\u003e6.9 x 1.45 mm\u003c\/strong\u003e. It is used across a wide range of Honda outboard applications where this exact small seal is called out in the factory parts diagram.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Honda OEM O-ring\u003c\/li\u003e\n\u003cli\u003ePart number: \u003cstrong\u003e91301-ZW4-003\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSize: \u003cstrong\u003e6.9 x 1.45 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eUsed in select Honda outboard sealing locations\u003c\/li\u003e\n\u003cli\u003eFits multiple Honda BF-series outboard families\u003c\/li\u003e\n\u003cli\u003eSmall precision seal; match by part number and diagram callout\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCompatible with select Honda BF outboards, including applications within the following model families:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eBF100A \/ BF100AK1\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF115A \/ BF115D\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF135A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF150A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF15D\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF175A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF200A \/ BF200D\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBF20D\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis includes many LA, LCA, LRTA, LHA, LHSA, LHTA, SHA, SHTA, XA, XCA, XXA, XXCA, XDA, XRA, and related configuration variants where \u003cstrong\u003e91301-ZW4-003\u003c\/strong\u003e is shown in the Honda parts diagram.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment using your Honda model code, serial number, and the exact parts diagram. This O-ring appears across many Honda outboard families, but the correct match depends on the specific service location and diagram callout.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this O-ring any time it is removed, flattened, cut, hardened, swollen, leaking, or disturbed during service. Reusing small O-rings can cause seepage or repeat disassembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eClean the O-ring groove and sealing surface before installation. Lightly lubricate with the correct fluid for the application, seat the O-ring evenly, and avoid twisting or pinching it during reassembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e91301-ZW4-003\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis part has broad Honda BF-series usage, so the part number is more reliable than appearance. The \u003cstrong\u003e6.9 x 1.45 mm\u003c\/strong\u003e size is precise; even a close-looking O-ring can leak if the cross-section or service location is wrong.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"HON","offers":[{"title":"Default Title","offer_id":43563814944804,"sku":"91301-ZW4-003","price":3.82,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/0b55b03b-e656-4c43-9154-23e5fc943b35.png?v=1779042613"},{"product_id":"indmar-exhaust-riser-gasket-s532010","title":"Indmar Marine Exhaust Riser Gasket - OEM Replacement Seal","description":"\u003cp\u003eOEM exhaust riser gasket designed for Indmar marine engines. This precision-cut gasket creates a reliable seal between the exhaust riser and manifold, preventing exhaust leaks and ensuring optimal engine performance.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOEM quality gasket for Indmar marine engines\u003c\/li\u003e\n\u003cli\u003eHeat-resistant material withstands high exhaust temperatures\u003c\/li\u003e\n\u003cli\u003ePrecision-cut design ensures proper fit and seal\u003c\/li\u003e\n\u003cli\u003ePrevents exhaust leaks and water intrusion\u003c\/li\u003e\n\u003cli\u003eEssential component for exhaust system maintenance and repair\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eDesigned for use in Indmar inboard marine engines. Ideal for exhaust system rebuilds, riser replacements, and routine maintenance to prevent exhaust leaks that can cause performance issues or engine damage.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eReplace riser gaskets whenever removing exhaust risers or manifolds. Always use new gaskets during reassembly to ensure a proper seal. Torque fasteners to manufacturer specifications.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Exhaust Riser Gasket\u003c\/li\u003e\n\u003cli\u003eManufacturer: Indmar\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: S532010\u003c\/li\u003e\n\u003cli\u003eApplication: Indmar Marine Engines\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Indmar","offers":[{"title":"Default Title","offer_id":43563815796772,"sku":"S532010","price":5.72,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/S532010.png?v=1771561053"},{"product_id":"lns-riser-block-off-gasket-47-04761","title":"SIERRA 18-04761 Riser Block Off Gasket | Marine Exhaust Seal","description":"\u003cp data-start=\"275\" data-end=\"617\"\u003eThe \u003cstrong data-start=\"279\" data-end=\"327\"\u003eSIERRA Riser Block Off Gasket -\u003c\/strong\u003e is designed to provide a dependable seal when an exhaust riser is removed, blocked off, or temporarily taken out of service. It helps protect marine engines from water intrusion, exhaust leaks, debris entry, and corrosion during winterization, rebuilds, riser replacement, or service work.\u003c\/p\u003e\n\u003cp data-start=\"619\" data-end=\"781\"\u003ePrecision-cut for proper riser port sealing, this gasket is made from durable marine-grade compressed gasket material suitable for demanding exhaust environments.\u003c\/p\u003e\n\u003ch2 data-start=\"783\" data-end=\"798\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"799\" data-end=\"1110\"\u003e\n\u003cli data-start=\"799\" data-end=\"837\"\u003ePrecision-cut riser block off gasket\u003c\/li\u003e\n\u003cli data-start=\"838\" data-end=\"885\"\u003eHelps prevent water ingestion into the engine\u003c\/li\u003e\n\u003cli data-start=\"886\" data-end=\"921\"\u003eReduces risk of exhaust gas leaks\u003c\/li\u003e\n\u003cli data-start=\"922\" data-end=\"980\"\u003eUseful during winterization, rebuilds, and riser service\u003c\/li\u003e\n\u003cli data-start=\"981\" data-end=\"1026\"\u003eMarine-grade compressed gasket construction\u003c\/li\u003e\n\u003cli data-start=\"1027\" data-end=\"1085\"\u003eDesigned for inboard and sterndrive exhaust applications\u003c\/li\u003e\n\u003cli data-start=\"1086\" data-end=\"1110\"\u003eNew replacement gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1112\" data-end=\"1129\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul data-start=\"1130\" data-end=\"1351\"\u003e\n\u003cli data-start=\"1130\" data-end=\"1151\"\u003e\n\u003cstrong data-start=\"1132\" data-end=\"1140\"\u003eSKU:\u003c\/strong\u003e 47-04761\u003c\/li\u003e\n\u003cli data-start=\"1152\" data-end=\"1173\"\u003e\n\u003cstrong data-start=\"1154\" data-end=\"1164\"\u003eBrand:\u003c\/strong\u003e SIERRA\u003c\/li\u003e\n\u003cli data-start=\"1174\" data-end=\"1210\"\u003e\n\u003cstrong data-start=\"1176\" data-end=\"1185\"\u003eType:\u003c\/strong\u003e Riser Block Off Gasket\u003c\/li\u003e\n\u003cli data-start=\"1211\" data-end=\"1268\"\u003e\n\u003cstrong data-start=\"1213\" data-end=\"1226\"\u003eMaterial:\u003c\/strong\u003e Marine-grade compressed gasket material\u003c\/li\u003e\n\u003cli data-start=\"1269\" data-end=\"1291\"\u003e\n\u003cstrong data-start=\"1271\" data-end=\"1285\"\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n\u003cli data-start=\"1292\" data-end=\"1351\"\u003e\n\u003cstrong data-start=\"1294\" data-end=\"1310\"\u003eApplication:\u003c\/strong\u003e Marine exhaust riser block-off sealing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"1353\" data-end=\"1379\"\u003eCompatibility \u0026amp; Fitment\u003c\/h2\u003e\n\u003cp data-start=\"1380\" data-end=\"1630\"\u003eDesigned for compatible marine inboard and sterndrive exhaust riser applications using \u003cstrong data-start=\"1467\" data-end=\"1490\"\u003eSIERRA 18-04761\u003c\/strong\u003e. Always verify fitment by comparing your existing gasket, riser port shape, engine model, and manufacturer part number before installation.\u003c\/p\u003e\n\u003ch2 data-start=\"1632\" data-end=\"1653\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp data-start=\"1654\" data-end=\"1913\"\u003eClean and inspect all mating surfaces before installation. Check for corrosion, warping, pitting, or old gasket residue. Install using manufacturer-recommended torque specifications. Replace the gasket each time the riser is removed to ensure a reliable seal.\u003c\/p\u003e\n\u003ch2 data-start=\"1915\" data-end=\"1934\"\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cp data-start=\"1935\" data-end=\"2140\"\u003eInspect riser and manifold sealing surfaces during seasonal service. Replace worn, crushed, or heat-damaged gaskets immediately. Keep spare gaskets on hand for winterization and exhaust system maintenance.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":43563827593252,"sku":"47-04761","price":14.39,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-04761_500x500_7db11614-e29a-45e5-bc09-fc8c84920dc7.jpg?v=1779516918"},{"product_id":"mercury-mercruiser-quicksilver-washer-12-8m0207778","title":"Mercury MerCruiser Quicksilver Washer 12-8M0207778 (.344 x .625 x .063)","description":"\u003ch2\u003eGenuine Mercury OEM Washer — .344\" x .625\" x .063\"\u003c\/h2\u003e\u003cp\u003eThis is the genuine OEM flat washer used in Mercury MerCruiser and Quicksilver assemblies wherever a .344\" ID × .625\" OD × .063\" thick washer is specified in the parts diagram. Manufactured to factory tolerances, it ensures correct clamping load and sealing surface protection during reassembly.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: \u003cstrong\u003e12-8M0207778\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: .344\" ID × .625\" OD × .063\" thick\u003c\/li\u003e\n\u003cli\u003eGenuine OEM — not aftermarket\u003c\/li\u003e\n\u003cli\u003eCompatible with Mercury, MerCruiser, and Quicksilver assemblies calling for this part number\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment\u003c\/h2\u003e\u003cp\u003eMatch this washer to your Mercury parts diagram using your engine model, serial number, and assembly location. Similar washers across Mercury product lines can vary by thickness and diameter — always confirm the part number before ordering.\u003c\/p\u003e\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\u003cp\u003eReplace any time the washer is removed during service, shows signs of deformation, corrosion, or scoring, or whenever the fastener it seats is being replaced.\u003c\/p\u003e\u003ch2\u003eInstallation\u003c\/h2\u003e\u003cp\u003eEnsure mating surfaces are clean and free of debris. Follow the Mercury service manual for correct orientation, torque specifications, and any locking compound requirements.\u003c\/p\u003e\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This washer is most commonly needed during thermostat housing, water pump, and manifold fastener service on MerCruiser inboard and stern drive engines. It provides the correct load-spreading surface under bolts and screws in areas where a standard hardware-store washer would not meet factory tolerances. Always order by the diagram part number — dimensions alone are not sufficient to confirm fitment across all Mercury assemblies.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563837194276,"sku":"12038","price":3.12,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/08424028-2224-4665-a308-9a633e028e76_d8fbff23-28be-43e9-9f78-975d5ab7223a.png?v=1786486840"},{"product_id":"mercury-gasket-16326","title":"Mercury Gasket 16326","description":"\u003cdiv class=\"flex flex-col text-sm pb-25\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:133d0cfe-5d77-4fee-8061-4a19810c1257-36\" data-testid=\"conversation-turn-58\" data-scroll-anchor=\"true\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"897272e5-f1d8-4d47-bbc4-5ab1548fb2d9\" dir=\"auto\" data-message-model-slug=\"gpt-5-4-thinking\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"\u003e\n\u003cp data-start=\"75\" data-end=\"357\"\u003eMercury 16326 is a genuine OEM gasket commonly identified as \u003cstrong data-start=\"162\" data-end=\"174\"\u003e27-16326\u003c\/strong\u003e, and catalog listings describe it as a \u003cstrong data-start=\"214\" data-end=\"234\"\u003epump body gasket\u003c\/strong\u003e used in selected small Mercury outboard carburetor and fuel-pump related assemblies. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"359\" data-end=\"377\"\u003e\u003cstrong data-start=\"359\" data-end=\"375\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"378\" data-end=\"671\"\u003e\n\u003cli data-start=\"378\" data-end=\"427\"\u003eGenuine Mercury Marine \/ Quicksilver OEM part\u003c\/li\u003e\n\u003cli data-start=\"428\" data-end=\"453\"\u003ePart number \u003cstrong data-start=\"442\" data-end=\"451\"\u003e16326\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"454\" data-end=\"497\"\u003eMercury shorthand listing: \u003cstrong data-start=\"483\" data-end=\"495\"\u003e27-16326\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"498\" data-end=\"547\"\u003eCommonly identified as a \u003cstrong data-start=\"525\" data-end=\"545\"\u003epump body gasket\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"548\" data-end=\"671\"\u003eSmall service gasket used in carburetor-side pump assemblies on applicable engines. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"673\" data-end=\"1112\"\u003e\u003cstrong data-start=\"673\" data-end=\"697\"\u003eEngine Compatibility\u003c\/strong\u003e\u003cbr data-start=\"697\" data-end=\"700\"\u003eThis gasket is associated with selected small \u003cstrong data-start=\"746\" data-end=\"788\"\u003eMercury and Mariner 2-stroke outboards\u003c\/strong\u003e, especially \u003cstrong data-start=\"801\" data-end=\"839\"\u003e4 HP, 5 HP, 6 HP, 8 HP, and 9.8 HP\u003c\/strong\u003e carbureted applications, depending on model and serial range. Parts-diagram references place it in carburetor assemblies for those engine families, so exact fitment should still be confirmed by model and serial number before ordering. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1114\" data-end=\"1393\"\u003e\u003cstrong data-start=\"1114\" data-end=\"1146\"\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003cbr data-start=\"1146\" data-end=\"1149\"\u003ePlease confirm compatibility in the Mercury Parts Catalog using your exact engine serial number before purchase. Mercury’s official catalog is organized by model and serial number for accurate parts lookup. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1395\" data-end=\"1895\"\u003e\u003cstrong data-start=\"1395\" data-end=\"1431\"\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003cbr data-start=\"1431\" data-end=\"1434\"\u003eThis gasket is typically replaced during carburetor or fuel-pump service when the original gasket is torn, compressed, leaking, or no longer sealing correctly after disassembly. Because it serves as a pump body gasket, renewing it during rebuild or service work helps maintain proper fuel-system sealing. This is a practical service inference based on the part’s documented placement in pump-body and carburetor assemblies. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1897\" data-end=\"2192\"\u003e\u003cstrong data-start=\"1897\" data-end=\"1919\"\u003eInstallation Notes\u003c\/strong\u003e\u003cbr data-start=\"1919\" data-end=\"1922\"\u003eInstall only the exact gasket specified for the carburetor \/ pump assembly being serviced. Small outboard fuel-system gaskets can look similar, so matching by exact part number and serial-number-based diagram is the safest approach. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2194\" data-end=\"2235\"\u003e\u003cstrong data-start=\"2194\" data-end=\"2233\"\u003eAlternate \/ Superseded Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2236\" data-end=\"2364\"\u003e\n\u003cli data-start=\"2236\" data-end=\"2364\"\u003e\n\u003cstrong data-start=\"2238\" data-end=\"2250\"\u003e27-16326\u003c\/strong\u003e\u003cbr data-start=\"2250\" data-end=\"2253\"\u003eNo confirmed superseded number was established from the sources reviewed. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2366\" data-end=\"2640\"\u003e\u003cstrong data-start=\"2366\" data-end=\"2388\"\u003eParts Desk Insight\u003c\/strong\u003e\u003cbr data-start=\"2388\" data-end=\"2391\"\u003eOn small carbureted outboards, little gaskets like this do a lot of important sealing work. Replacing them during pump or carb service is a smart way to help avoid nuisance fuel seepage and repeat teardown work. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2642\" data-end=\"2707\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003cdiv aria-hidden=\"true\" data-edge=\"true\" class=\"pointer-events-none h-px w-px absolute bottom-0\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563838701604,"sku":"16326","price":14.71,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/289c5be2-f728-4c6b-ba74-6fbf859c3f28.png?v=1775777980"},{"product_id":"merc-32","title":"Mercury Quicksilver 16755T1 Bell Housing Gasket Kit — MerCruiser Bravo Sterndrive","description":"\u003csection class=\"product-description\"\u003e\n\n\u003ch2\u003eMercury Quicksilver 16755T1 — Bell Housing Installation Gasket Kit, MerCruiser Bravo Sterndrive\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e16755T1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMercury Reference\u003c\/th\u003e\n\u003ctd\u003e16755T1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003e16755T1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMercury \/ Quicksilver (OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eBell Housing Installation Gasket Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003ctd\u003eMerCruiser Bravo Sterndrive Bell Housing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eKit Contents\u003c\/th\u003e\n\u003ctd\u003e6 gaskets (complete bell housing installation set)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCross-Reference\u003c\/th\u003e\n\u003ctd\u003e16755Q1 (retail packaged equivalent)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eGTIN\u003c\/th\u003e\n\u003ctd\u003e745061028708\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003eapprox. 7.30\" × 4.20\" × 2.60\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eapprox. 45 g (0.10 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Mercury Quicksilver 16755T1 is the genuine OEM bell housing installation gasket kit for MerCruiser Bravo sterndrive service. It contains 6 gaskets covering all bell housing sealing surfaces needed during a bell housing installation or reseal. This is the correct kit to use any time the bell housing is being separated and reinstalled on a Bravo drive — using new gaskets from the OEM kit ensures proper sealing and eliminates leak-back from reused compressed originals.\u003c\/p\u003e\n\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e6 × OEM gaskets for MerCruiser Bravo bell housing installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eGenuine Mercury \/ Quicksilver OEM gasket kit — correct material and dimensions for Bravo bell housing surfaces\u003c\/li\u003e\n  \u003cli\u003eComplete 6-piece set — all bell housing installation gaskets in one kit\u003c\/li\u003e\n  \u003cli\u003eEliminates the need to source individual gaskets separately\u003c\/li\u003e\n  \u003cli\u003eCorrect replacement for both 16755T1 (dealer) and 16755Q1 (retail) applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMerCruiser Bravo One sterndrive — bell housing installation\/reseal service\u003c\/li\u003e\n  \u003cli\u003eMerCruiser Bravo Two sterndrive — bell housing installation\/reseal service\u003c\/li\u003e\n  \u003cli\u003eMerCruiser Bravo Three sterndrive — bell housing installation\/reseal service\u003c\/li\u003e\n  \u003cli\u003eAny MerCruiser Bravo drive requiring bell housing gasket renewal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlways confirm by drive model and serial number\u003c\/strong\u003e using the Mercury parts catalog before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAny time the bell housing is removed from a MerCruiser Bravo sterndrive\u003c\/li\u003e\n  \u003cli\u003eDuring scheduled drive service where bell housing seals are being renewed\u003c\/li\u003e\n  \u003cli\u003eWhen oil or water seepage is found at the bell housing joint\u003c\/li\u003e\n  \u003cli\u003eAs part of a full drive reseal or overhaul\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm the drive is a Bravo model and identify the exact serial number before ordering — bell housing gasket kits differ between drive families\u003c\/li\u003e\n  \u003cli\u003eClean all mating surfaces thoroughly before installing new gaskets\u003c\/li\u003e\n  \u003cli\u003eDo not reuse compressed or torn original gaskets — even minor compression set causes sealing failure on reassembly\u003c\/li\u003e\n  \u003cli\u003eTorque all bell housing fasteners to the MerCruiser service specification for the applicable Bravo model\u003c\/li\u003e\n  \u003cli\u003eRefer to the Mercury MerCruiser service manual for your Bravo model and serial range for the correct assembly sequence and torque values\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat is the difference between 16755T1 and 16755Q1?\u003c\/strong\u003e Both are the same bell housing installation gasket kit for Bravo drives. 16755T1 is the dealer\/OEM packaging designation; 16755Q1 is the Quicksilver retail packaged version of the same kit. Either number confirms the correct application.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDoes this kit cover all Bravo variants?\u003c\/strong\u003e It is listed by Mercury for Bravo drive bell housing installation as a family. However, Bravo One, Two, and Three have different internal configurations, so always verify by serial number in the Mercury parts catalog before ordering to confirm it is the correct kit for the specific drive being serviced.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan I reuse the original gaskets if they look undamaged?\u003c\/strong\u003e Not recommended. Bell housing gaskets compress during initial installation and will not seal reliably when reused. Replace with new OEM gaskets every time the housing is separated.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e This kit is the right call any time a MerCruiser Bravo drive is having its bell housing removed — whether for a full overhaul, a lower unit swap, or addressing a leak at the bell housing joint. Because the kit covers all six gasket positions in the bell housing installation, it eliminates the need to piece together individual gaskets from separate listings, and ensures every sealing surface gets a fresh OEM part in the same service visit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Issues:\u003c\/strong\u003e The most frequent mistake is ordering without confirming the drive is a Bravo — Alpha One and other MerCruiser drive families use different bell housing configurations and are not interchangeable with this kit. The second common issue is technicians attempting to reuse the original gaskets if they appear undamaged — bell housing gaskets compress during installation and should always be replaced with new OEM parts when the housing is separated.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-bravo-bearing-carrier-oil-seal-880596502\"\u003eMercury MerCruiser Bravo Bearing Carrier Oil Seal 880596502\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-quicksilver-lower-unit-seal-kit-26-33144a2\"\u003eMercury Quicksilver Lower Unit Seal Kit 26-33144A2 — MerCruiser IA IB IC R MR Alpha One Gen 1\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-gimbal-housing-bushing-kit-805041a2\"\u003eMercury MerCruiser Gimbal Housing Bushing Kit 805041A2\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563838799908,"sku":"16755T1","price":21.52,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/862d860d-f0ec-40de-90df-1be2cf43cce1.png?v=1776999694"},{"product_id":"merc-34","title":"Mercury MerCruiser 16779 Remote Oil Filter Adaptor Gasket — 4.3L \/ 4.3LX V6","description":"\u003csection class=\"product-description\"\u003e\n\n\u003ch2\u003eMercury MerCruiser 16779 — Remote Oil Filter Adaptor Gasket, 4.3L \/ 4.3LX V6\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e16779\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eService Format\u003c\/th\u003e\n\u003ctd\u003e27-16779\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003e16779\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMercury \/ MerCruiser (OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eRemote Oil Filter Adaptor Gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003ctd\u003eMerCruiser Remote Oil Filter Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDiagram Position\u003c\/th\u003e\n\u003ctd\u003eAdaptor gasket in remote oil filter adaptor assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eQuantity Required\u003c\/th\u003e\n\u003ctd\u003e\n\u003cstrong\u003e2 per service\u003c\/strong\u003e — confirm by diagram\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003eapprox. 2.75\" × 2.75\" × 0.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eapprox. 9 g (0.02 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eGTIN\u003c\/th\u003e\n\u003ctd\u003e745061118515\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMercury MerCruiser 16779 is a genuine OEM adaptor gasket used in the remote oil filter assembly on selected MerCruiser 4.3L and 4.3LX V6 engines. It seals the adaptor area of the remote oil filter stack — not a general-purpose engine gasket. Mercury parts diagrams specify \u003cstrong\u003e2 gaskets per service\u003c\/strong\u003e in the remote oil filter assembly where it appears; confirm the quantity from your specific engine diagram before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Confirm fitment by exact engine model and serial number using the MerCruiser parts diagram for the remote oil filter assembly. Similar adaptor gaskets exist in nearby oil-system assemblies and are not interchangeable.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMerCruiser 4.3L (Gen II) GM 262 V6 — 1992–1995 remote oil filter assembly (confirm serial range)\u003c\/li\u003e\n  \u003cli\u003eMerCruiser 4.3LX (Gen II) GM 262 V6 — 1992–1995 remote oil filter assembly (confirm serial range)\u003c\/li\u003e\n  \u003cli\u003eMerCruiser 4.3L MPI Alpha \/ Bravo — remote oil filter assembly (confirm serial range)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlways confirm by exact engine serial number and remote oil filter diagram\u003c\/strong\u003e before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Assembly Components\u003c\/h2\u003e\n\u003cp\u003eMercury parts diagrams show 16779 used in the remote oil filter assembly alongside components including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRemote oil filter adaptor — 16521001 or 860091T\u003c\/li\u003e\n  \u003cli\u003eOil filter bracket\u003c\/li\u003e\n  \u003cli\u003eBypass valve — 22-878050\u003c\/li\u003e\n  \u003cli\u003eRelated O-rings, fittings, and seals in the same service area\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInspect all components in the remote oil filter assembly when servicing — replacing related O-rings and seals at the same time avoids a return leak after reassembly.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAny time the remote oil filter adaptor is removed — do not reuse the original gaskets after the adaptor has been separated\u003c\/li\u003e\n  \u003cli\u003eOil leaking from the remote oil filter adaptor area\u003c\/li\u003e\n  \u003cli\u003eDuring routine remote oil filter service where the adaptor is disturbed\u003c\/li\u003e\n  \u003cli\u003eGasket is visibly compressed, torn, hardened, or no longer forming a complete seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm the correct MerCruiser remote oil filter diagram for the engine model and serial number before ordering — similar-looking adaptor gaskets in nearby oil-system assemblies are not interchangeable\u003c\/li\u003e\n  \u003cli\u003eParts diagrams specify \u003cstrong\u003e2 gaskets\u003c\/strong\u003e for this remote oil filter adaptor application — verify the required quantity from your engine’s specific diagram\u003c\/li\u003e\n  \u003cli\u003eClean all mating surfaces on the adaptor and filter bracket before installing new gaskets\u003c\/li\u003e\n  \u003cli\u003eDo not reuse the original gaskets after the adaptor has been separated — compressed originals will not seal reliably on reassembly\u003c\/li\u003e\n  \u003cli\u003eInspect the bypass valve (22-878050), adaptor, bracket, and related O-rings while the assembly is apart — replace any additional worn components at the same time\u003c\/li\u003e\n  \u003cli\u003eConfirm there are no leaks after reassembly before returning the engine to service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhy do I need 2 gaskets?\u003c\/strong\u003e The remote oil filter adaptor assembly on MerCruiser 4.3L V6 engines uses a gasket at each face of the adaptor — one per sealing joint. Mercury parts diagrams confirm the quantity as 2 per service. Ordering a single gasket will leave the job incomplete.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan I reuse the original gasket if it looks undamaged?\u003c\/strong\u003e No. Adaptor gaskets compress under clamping load and will not seal reliably if reused. Always replace with new OEM gaskets whenever the adaptor is removed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHow do I find the right remote oil filter diagram for my engine?\u003c\/strong\u003e Use the Mercury Parts Catalog at the Mercury Marine website, entering your engine model and serial number. Navigate to the remote oil filter assembly diagram to confirm the correct part numbers and quantities before ordering.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat other parts should I replace at the same time?\u003c\/strong\u003e While the remote oil filter adaptor is apart, inspect and replace the bypass valve (22-878050) and any related O-rings or seals in the same assembly. Addressing all sealing components in one service avoids a repeat job for a nearby leak.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e This gasket is the right call any time the MerCruiser 4.3L remote oil filter adaptor is being removed for service. It’s a low-cost part that’s easy to overlook, but reusing a compressed original is one of the most common causes of an oil leak callback after remote filter service. Order two — the diagram requires it, and the cost is minimal compared to a return service visit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Issues:\u003c\/strong\u003e The most frequent mistake is ordering only one gasket when the assembly requires two. The second common issue is selecting this gasket by name alone without confirming it is the correct one for the remote oil filter adaptor — similar gaskets exist in nearby oil-system locations and are not interchangeable. A quick serial-number lookup in the Mercury parts diagram is the fastest way to confirm the correct part and quantity before ordering.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563838865444,"sku":"16779","price":8.63,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/afe32069-cab0-44a1-81cb-7ae3a005e2f3.png?v=1777000508"},{"product_id":"mercury-power-trim-pump-repair-kit-18545a1","title":"Mercury 18545A1 Power Trim Pump Repair Kit — Oildyne MerCruiser Sterndrive","description":"\u003csection class=\"product-description\"\u003e\n\n\u003ch2\u003eMercury 18545A1 — Power Trim Pump Repair Kit, Oildyne\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e18545A1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMercury \/ Quicksilver (OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003ePower Trim Pump Overhaul Repair Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003ctd\u003eOildyne Power Trim Pump — MerCruiser Sterndrive\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSupersedes\u003c\/th\u003e\n\u003ctd\u003e18545\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eapprox. 300 g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMercury 18545A1 is a genuine OEM power trim pump overhaul repair kit for MerCruiser sterndrive applications that use the \u003cstrong\u003eOildyne-style power trim pump\u003c\/strong\u003e. It contains the internal seals, O-rings, and components needed to rebuild the pump when it is leaking, losing pressure, or cycling poorly. This is a pump rebuild kit — not a complete pump assembly. Confirm that your trim system uses the Oildyne pump design before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eSupersession\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent part number:\u003c\/strong\u003e 18545A1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 18545\u003c\/li\u003e\n  \u003cli\u003eIf your service records or parts diagram show 18545, 18545A1 is the correct current replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMerCruiser sterndrive applications equipped with the Oildyne-style power trim pump\u003c\/li\u003e\n  \u003cli\u003eInternal pump rebuild when trim pump is leaking fluid, losing hydraulic pressure, or failing to hold trim position\u003c\/li\u003e\n  \u003cli\u003eOverhaul of the Oildyne pump during trim system service or reseal\u003c\/li\u003e\n  \u003cli\u003eAlways confirm fitment by engine\/drive model and serial number using the Mercury parts catalog before ordering — trim pump designs vary by model year and serial range\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen This Kit Is Needed\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eTrim pump leaking hydraulic fluid externally or internally\u003c\/li\u003e\n  \u003cli\u003eTrim system losing pressure and not holding position (engine trims down under load)\u003c\/li\u003e\n  \u003cli\u003eTrim pump cycling continuously without building pressure\u003c\/li\u003e\n  \u003cli\u003eDuring a full trim system overhaul or reseal service\u003c\/li\u003e\n  \u003cli\u003ePreventive rebuild when the pump is disassembled for inspection and seals are aged or hardened\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm your trim system uses the Oildyne pump design before disassembly — trim pump internal components vary by pump type and are not interchangeable between designs\u003c\/li\u003e\n  \u003cli\u003eReference the correct Mercury parts diagram for your engine model and serial number before ordering\u003c\/li\u003e\n  \u003cli\u003eDrain and contain trim fluid before disassembly — use appropriate marine trim fluid when refilling\u003c\/li\u003e\n  \u003cli\u003eInspect the trim pump motor, reservoir, and hydraulic lines while the pump is apart; replace any other worn components at the same time to avoid a return service\u003c\/li\u003e\n  \u003cli\u003eBleed the trim system after reassembly to remove air from the hydraulic circuit before testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat is the Oildyne pump?\u003c\/strong\u003e The Oildyne is a specific style of hydraulic power trim pump used on many MerCruiser sterndrive applications. It is a self-contained hydraulic unit with an integral reservoir and electric motor. Not all MerCruiser trim systems use the Oildyne design — confirm your pump type before ordering this kit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMy engine trims down on its own — is this the right kit?\u003c\/strong\u003e Trim drift (the engine slowly trimming down under load) is a common symptom of internal pump seal failure. This kit addresses the internal seals of the Oildyne pump. However, trim drift can also be caused by leaking trim cylinders — confirm the leak source before ordering a pump rebuild kit vs. a cylinder seal kit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan I rebuild the pump myself?\u003c\/strong\u003e Trim pump rebuilds require careful attention to cleanliness and correct reassembly. If you have the Mercury service manual for your model, the rebuild procedure is documented. If in doubt, a marine service shop with MerCruiser experience is the safest option.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat fluid does the Oildyne pump use?\u003c\/strong\u003e MerCruiser Oildyne trim systems use Mercury Power Trim and Steering Fluid (or approved equivalent). Do not use automotive transmission fluid or brake fluid.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e This kit is the right call when a customer has confirmed the Oildyne pump is the source of a leak or pressure loss, and they’re ready to rebuild rather than replace the whole pump assembly. It’s most commonly ordered alongside trim fluid and a reservoir O-ring when doing a complete pump service in one visit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Issues:\u003c\/strong\u003e The most frequent mistake is ordering a pump repair kit without first confirming whether the leak is in the pump itself or in the trim cylinders. A cylinder O-ring leak looks similar from the outside but needs a different kit entirely — see the \u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-trim-cylinder-o-ring-kit-87400a2\"\u003eMercury MerCruiser Trim Cylinder O-Ring Kit 87400A2\u003c\/a\u003e. The second common issue is ordering this kit for a trim pump that is not the Oildyne design — always confirm pump type by model and serial number first.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-trim-cylinder-o-ring-kit-87400a2\"\u003eMercury MerCruiser Trim Cylinder O-Ring Kit 87400A2\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-trim-pump-reservoir-screw-o-ring-spacer-18527\"\u003eMercury MerCruiser Trim Pump Reservoir Screw O-Ring Spacer 18527\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/arco-6218-mercury-mercruiser-tilt-trim-motor-12v-oildyne-motor-only\"\u003eARCO 6218 Mercury \/ MerCruiser Tilt \u0026amp; Trim Motor — 12V Oildyne (Motor Only)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/sierra-tilt-trim-hydraulic-reservoir-mercury-mercruiser-47-6771\"\u003eSierra Tilt\/Trim Hydraulic Reservoir — Mercury \u0026amp; MerCruiser | 47-6771\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/sierra-hydraulic-trim-pump-assembly-with-steel-bracket-mercruiser-1983-no-quick-connect-47-6752\"\u003eSierra Hydraulic Trim Pump Assembly with Steel Bracket — MerCruiser 1983+ | 47-6752\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/sierra-power-trim-relay-mercury-mercruiser-47-5729\"\u003eSierra Power Trim Relay — Mercury \u0026amp; MerCruiser | 47-5729\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-quicksilver-solenoid-8m0185622\"\u003eMercury MerCruiser Quicksilver Solenoid 8M0185622\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563839553572,"sku":"18545A1","price":262.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/a1632658-5b8d-40ed-825d-ee4bebc5426e.png?v=1773265377"},{"product_id":"merc-47","title":"Mercury Quicksilver 18785T Cylinder Head Gasket — V-135 \/ V-150 V6 Outboard","description":"\u003csection class=\"product-description\"\u003e\n\n\u003ch2\u003eMercury Quicksilver 18785T — Cylinder Head Gasket, V-135 \/ V-150 V6 Outboard\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e18785T\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eService Format\u003c\/th\u003e\n\u003ctd\u003e27-18785T\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003e18785T\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMercury \/ Quicksilver (OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eCylinder Head Gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003ctd\u003eMercury V6 Outboard Powerhead — Cylinder Head Sealing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSupersedes\u003c\/th\u003e\n\u003ctd\u003e187851 \/ 187853\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eGTIN\u003c\/th\u003e\n\u003ctd\u003e745061124424\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eapprox. 100 g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Mercury Quicksilver 18785T is a genuine OEM cylinder head gasket for selected Mercury V6 outboard powerheads. It seals the joint between the cylinder head and powerhead block, maintaining combustion pressure and preventing coolant or water intrusion into the combustion chamber. Mercury parts diagrams place 18785T directly at the cylinder head \/ block interface in V-135 and V-150 V6 applications within the specified serial ranges.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Head gaskets are highly application-specific. Combustion-ring diameter, coolant passage layout, thickness, and sealing pattern must all match the exact block and cylinder-head combination. A gasket that looks similar can cause compression loss or cooling problems if it is not the correct part for that specific powerhead. Always confirm by exact model and serial number before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eSupersession\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent part number:\u003c\/strong\u003e 18785T (service format: 27-18785T)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 187851\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 187853\u003c\/li\u003e\n  \u003cli\u003eIf your service records or parts diagram show 187851 or 187853, 18785T is the correct current OEM replacement.\u003c\/li\u003e\n  \u003cli\u003eRelated V6 head gasket variants include \u003cstrong\u003e18786T\u003c\/strong\u003e and \u003cstrong\u003e822844T05\u003c\/strong\u003e — these apply to different XR, Magnum, EFI, or Jet configurations within the same engine family. Confirm by exact model and serial number before substituting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMercury V-135 — serial range 0C239553–0G960499\u003c\/li\u003e\n  \u003cli\u003eMercury V-135 — serial range 0G960500–0T178499\u003c\/li\u003e\n  \u003cli\u003eMercury V-150 — serial range 0C239553–0G960499\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlways confirm by exact model and serial number\u003c\/strong\u003e — related Mercury V6 engines (XR, Magnum, EFI, Jet variants) can use different head gaskets depending on configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAny time the cylinder head is removed — head gaskets should never be reused once the head has been lifted\u003c\/li\u003e\n  \u003cli\u003eSigns of combustion gas leakage at the head\/block joint (bubbles in the cooling system, white exhaust smoke)\u003c\/li\u003e\n  \u003cli\u003eWater or coolant intrusion into the combustion chamber\u003c\/li\u003e\n  \u003cli\u003eCompression loss traced to the head gasket rather than rings or valves\u003c\/li\u003e\n  \u003cli\u003eVisible gasket deterioration, erosion at coolant passages, or blown combustion ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDo not reuse the original head gasket — replace with a new OEM gasket every time the cylinder head is removed\u003c\/li\u003e\n  \u003cli\u003eThoroughly clean both the cylinder-head and block mating surfaces before installation — gasket residue, corrosion, or debris will cause leaks\u003c\/li\u003e\n  \u003cli\u003eInspect both mating surfaces for warping, erosion, or corrosion pitting; a distorted head or block surface must be machined flat before a new gasket will seal reliably\u003c\/li\u003e\n  \u003cli\u003eInstall the gasket in the correct orientation as shown in the Mercury service manual for the exact model and serial range\u003c\/li\u003e\n  \u003cli\u003eTighten cylinder-head fasteners in the specified sequence and in torque stages per the Mercury service manual — incorrect torque sequence is one of the most common causes of head gasket failure on reinstallation\u003c\/li\u003e\n  \u003cli\u003eReplace all head fasteners if the service manual specifies torque-to-yield bolts (one-time use)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan I reuse my original head gasket if it looks undamaged?\u003c\/strong\u003e No. Head gaskets deform under clamping load during initial installation and will not seal reliably if reused. Always install a new OEM gasket whenever the cylinder head is removed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat is the difference between 18785T, 18786T, and 822844T05?\u003c\/strong\u003e These are different head gaskets within the Mercury V6 outboard engine family, used on different configurations (XR, Magnum, EFI, Jet) and serial ranges. They are not interchangeable — confirm the exact correct part number using your model and serial number in the Mercury parts catalog before ordering.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMy engine is overheating after a head gasket replacement — what should I check?\u003c\/strong\u003e Verify that the head was not warped — a distorted mating surface will cause a new gasket to fail immediately. Also confirm all coolant passages were clear of debris before reassembly, and that the head fasteners were torqued in the correct sequence and to the correct specification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHow do I know if my head gasket has failed without disassembly?\u003c\/strong\u003e Common signs include white smoke from the exhaust, unexplained coolant loss, bubbles in the cooling system reservoir, compression loss in one or more cylinders, or oil\/water contamination. A cylinder leakdown or compression test can help confirm head gasket failure before disassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e This gasket is the correct choice for a cylinder head service on Mercury V-135 or V-150 V6 outboards within the confirmed serial ranges. The most common scenario is during a powerhead rebuild, overheating repair, or whenever the cylinder head has been removed for inspection or service. Because head gaskets must never be reused once the head is lifted, ordering the replacement gasket before teardown is standard practice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Issues:\u003c\/strong\u003e The most frequent problem is ordering a head gasket by engine displacement alone without confirming the exact model variant and serial range. The Mercury V6 outboard family includes XR, Magnum, EFI, and Jet configurations that use different head gaskets — including 18786T and 822844T05 — that are not interchangeable with 18785T. The second common issue is head gasket failure after reinstallation due to a warped mating surface that was not inspected or machined before reassembly. A new gasket on a distorted surface will not hold.\u003c\/p\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-high-performance-2-stroke-oil-8m0078011\"\u003eMercury High Performance 2-Stroke Oil — 8M0078011\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563839619108,"sku":"18785T","price":104.45,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/d26b1836-0525-4aa2-8a27-8c8ca42b03c6.png?v=1786479761"},{"product_id":"mercruiser-seal-8m0187157","title":"Mercury MerCruiser Quicksilver 8M0187157 Gearcase Drain \u0026 Fill Screw Seal — Blue OEM Washer","description":"\u003csection class=\"product-description\"\u003e\n\n\u003ch2\u003eMercury MerCruiser Quicksilver 8M0187157 — Gearcase Drain \u0026amp; Fill Screw Seal, Blue OEM Washer\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e8M0187157\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eService Format\u003c\/th\u003e\n\u003ctd\u003e12-8M0187157\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eAlso Referenced As\u003c\/th\u003e\n\u003ctd\u003e12-19183-3\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003e191833\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMercury \/ MerCruiser \/ Quicksilver (OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eGearcase Drain \u0026amp; Fill Screw Seal\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSoft compressible sealing washer (blue)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003ctd\u003eSterndrive Gearcase \/ Outboard Lower Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFits Screw Size\u003c\/th\u003e\n\u003ctd\u003e3\/8\"-16 drain and fill screws\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eService Interval\u003c\/th\u003e\n\u003ctd\u003eReplace at every gear lube change\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eQuantity per Service\u003c\/th\u003e\n\u003ctd\u003e2 (one drain screw, one vent\/fill screw)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eapprox. 23 g per unit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMercury Quicksilver 8M0187157 is the genuine OEM drain and fill screw seal for MerCruiser sterndrive gearcases and Mercury \/ Mariner outboard lower units. This small blue compressible washer sits under the drain and vent\/fill screws to maintain a leak-free seal that keeps gear lube in and water out. Mercury specifies replacing this seal every time the gear lube is changed — it is a one-time-use component that deforms on installation and will not seal reliably if reused.\u003c\/p\u003e\n\n\u003cp\u003eMost gearcases have two screws requiring this seal — a drain screw and a vent\/fill screw. Order two seals per service.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMerCruiser Alpha One sterndrive — gearcase drain and fill screws\u003c\/li\u003e\n  \u003cli\u003eMerCruiser Alpha One Gen II sterndrive — gearcase drain and fill screws\u003c\/li\u003e\n  \u003cli\u003eMerCruiser Bravo One \/ Two \/ Three sterndrive — gearcase drain and fill screws\u003c\/li\u003e\n  \u003cli\u003eMercury and Mariner outboard lower units — most models approximately 6–220 HP (confirm by model and serial number)\u003c\/li\u003e\n  \u003cli\u003eSome Japanese-built Mercury models and selected Verado configurations use a different seal — confirm by exact model and serial number\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlways confirm by exact engine model and serial number\u003c\/strong\u003e before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cp\u003eReplace this seal \u003cstrong\u003eat every gear lube change\u003c\/strong\u003e. Mercury Marine specifies a new seal at each service interval. The blue washer is a compressible one-time-use gasket — once it has been compressed under the screw, it will not re-form and will not seal reliably if reused. Skipping seal replacement is one of the most common causes of gear lube leaks after a lower unit or gearcase service.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eOrder two seals per gearcase service — one for the drain screw and one for the vent\/fill screw\u003c\/li\u003e\n  \u003cli\u003eDo not reuse the removed seal — replace with a new OEM seal at every service\u003c\/li\u003e\n  \u003cli\u003eSeat the seal squarely under the screw before tightening — a cocked seal will not compress evenly and may leak\u003c\/li\u003e\n  \u003cli\u003eTighten drain and fill screws to the torque specification in the Mercury service manual for the specific gearcase or lower unit; overtightening can damage the housing threads\u003c\/li\u003e\n  \u003cli\u003eCheck for seepage at the drain and fill screws after the first run following service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDo I need one or two seals per service?\u003c\/strong\u003e Most gearcases and lower units have two screws — a drain screw at the bottom and a vent\/fill screw higher up. Both require a new seal at each service. Order two seals per gearcase or lower unit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat happens if I reuse the old seal?\u003c\/strong\u003e The compressible washer deforms permanently when compressed under the screw. Reusing it leaves a gap that allows gear lube to seep out and can allow water to enter the lower unit — which contaminates the lube and accelerates bearing and gear wear. At this price point, there is no practical reason to reuse the old seal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIs this the same seal for all Mercury outboards?\u003c\/strong\u003e No. Some Japanese-built Mercury models and certain Verado engines use a different drain screw configuration and may require a different seal. Always confirm by your exact model and serial number before ordering.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan I use a generic washer as a substitute?\u003c\/strong\u003e Not recommended. The OEM blue seal is made from a specific compressible material engineered to seal correctly at the specified torque. Generic washers — copper, aluminum, or fibre — may not compress to the correct thickness or provide the right seal contact, which can result in leaks even when the screw is correctly torqued.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHow many should I keep on hand?\u003c\/strong\u003e If you service multiple drives or outboards, or if you perform your own annual maintenance, keeping a small supply on hand is practical. At this price, stocking a few eliminates the need to source them at service time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-quicksilver-lower-unit-seal-kit-26-33144a2\"\u003eMercury Quicksilver Lower Unit Seal Kit 26-33144A2 — MerCruiser Alpha One Gen 1\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-quicksilver-driveshaft-oil-seal-26-804156\"\u003eMercury Quicksilver Driveshaft Oil Seal 26-804156 — Outboard \u0026amp; MerCruiser Gearcase\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-bravo-drive-lube-bottle-with-connector-cap-8m0075709\"\u003eMercury MerCruiser Bravo Drive Lube Bottle with Connector \u0026amp; Cap — 8M0075709\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-quicksilver-o-ring-20826\"\u003eMercury MerCruiser Quicksilver 20826 Gear Housing O-Ring — 2.230\" × 0.139\"\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-quicksilver-16779-remote-oil-filter-adaptor-gasket\"\u003eMercury MerCruiser 16779 Remote Oil Filter Adaptor Gasket — 4.3L V6\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e This seal is the correct OEM replacement for any gear lube service on MerCruiser Alpha or Bravo sterndrives and most Mercury \/ Mariner outboard lower units. It’s one of the most overlooked parts in a routine gear lube change — easy to forget because it’s small and inexpensive, but important because reusing the old seal is a leading cause of post-service leaks. Ordering two at a time covers a full gearcase service, and buying several at once makes sense if you maintain multiple units or want to keep a stock on hand.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Issues:\u003c\/strong\u003e The most common mistake is reusing the old blue washer — it deforms on first installation and will not re-seal reliably. The second common issue is ordering only one seal when two are required for a full gearcase service (drain and vent\/fill screws). Check the part number against your exact engine model and serial number if you have a Japanese-built Mercury or a Verado, as those applications may use a different seal configuration.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563839750180,"sku":"191833","price":2.18,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/3e6ba3dc-c3fa-43fe-864e-7cb0ddb24759.png?v=1787254686"},{"product_id":"mercruiser-gasket-19202001","title":"Mercury Quicksilver 19202001 Water Pump Plate Gasket — 6 \/ 8 \/ 9.9 HP Outboard","description":"\u003csection class=\"product-description\"\u003e\n\n\u003ch2\u003eMercury Quicksilver 19202001 — Water Pump Plate Gasket, 6 \/ 8 \/ 9.9 HP Outboard\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e19202001\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eService Format\u003c\/th\u003e\n\u003ctd\u003e27-19202001\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003e19202001\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMercury \/ Quicksilver (OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eWater Pump Plate Gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003ctd\u003eMercury \/ Mariner Outboard Lower Unit — Water Pump Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDiagram Position\u003c\/th\u003e\n\u003ctd\u003eWithin the water pump stack — between pump plate, impeller, cover assembly, and water-tube components\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSupersedes\u003c\/th\u003e\n\u003ctd\u003e19202 \/ 42206\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eapprox. 50 g (0.11 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eGTIN\u003c\/th\u003e\n\u003ctd\u003e745061645080\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMercury Quicksilver 19202001 is a genuine OEM water pump plate gasket for selected Mercury and Mariner small outboard lower-unit water pump assemblies. It is positioned within the water pump stack — between the face plate, impeller, cover assembly, and water-tube components — where it seals the pump plate and maintains proper cooling-water flow through the lower unit. It is the current replacement for earlier gaskets 19202 and 42206.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSupersession note:\u003c\/strong\u003e If your service records or parts diagram shows 19202 or 42206, use 19202001 as the correct current OEM replacement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e This gasket is part of a water pump assembly that contains several similar seals and gaskets. Confirm that the parts diagram specifically calls for 19202001 \/ 27-19202001 — especially when servicing older engines originally cataloged with the earlier 19202 number.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMercury \/ Mariner 6 HP outboard — lower-unit water pump assembly (confirm serial range; applies from serial 0P325500 and up on later models, and earlier models originally using 19202)\u003c\/li\u003e\n  \u003cli\u003eMercury \/ Mariner 8 HP outboard — lower-unit water pump assembly (confirm serial range)\u003c\/li\u003e\n  \u003cli\u003eMercury \/ Mariner 9.9 HP outboard — lower-unit water pump assembly (confirm serial range)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlways confirm by exact engine model and serial number\u003c\/strong\u003e using the Mercury water-pump assembly diagram\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cp\u003eReplace this gasket \u003cstrong\u003eat every water pump service\u003c\/strong\u003e — whenever the lower unit is opened for impeller, face-plate, or pump-base service. Gaskets are a one-time-use component and must not be reused after removal. Reusing a compressed or hardened gasket reduces sealing effectiveness and can allow internal leakage that reduces cooling-water flow to the engine.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAt every water pump service — whenever the pump plate or impeller is being replaced\u003c\/li\u003e\n  \u003cli\u003eGasket is compressed, torn, hardened, or no longer flat\u003c\/li\u003e\n  \u003cli\u003eEvidence of cooling-water leakage within the lower unit water pump stack\u003c\/li\u003e\n  \u003cli\u003eEngine is running warm or overheating and a water pump inspection is being performed\u003c\/li\u003e\n  \u003cli\u003eAny time the lower unit is opened and the water pump assembly is disturbed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eClean the pump plate and all mating surfaces thoroughly before installation — old gasket material or corrosion on the seating surfaces will prevent proper sealing\u003c\/li\u003e\n  \u003cli\u003eInstall the gasket in the correct orientation as shown in the Mercury water-pump assembly diagram for the specific engine model and serial range\u003c\/li\u003e\n  \u003cli\u003eWhile the lower unit is apart, inspect the impeller, face plate, pump cover, housing seals, and water-tube components for wear or damage — replacing all worn components in the same service visit avoids having to re-open the lower unit shortly after\u003c\/li\u003e\n  \u003cli\u003eUse a complete water pump repair kit where available to replace all gaskets, seals, and the impeller in one service\u003c\/li\u003e\n  \u003cli\u003eFollow torque specifications in the Mercury service manual for the pump housing fasteners after reassembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat is the difference between 19202001 and the earlier 19202?\u003c\/strong\u003e 19202001 is the current active Mercury OEM part number that supersedes the original 19202 (and also 42206). They are functionally the same gasket — 19202001 is the correct current replacement for either earlier number. If your diagram or service records show 19202 or 42206, order 19202001.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan I reuse the original gasket during impeller service?\u003c\/strong\u003e No. Water pump plate gaskets compress under the clamping load of the pump housing and will not re-seal reliably if reused. Reusing an old gasket is one of the most common causes of reduced cooling performance after a water pump service. The gasket should always be replaced whenever the pump is opened.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan I cut a generic gasket to fit instead of using the OEM part?\u003c\/strong\u003e Not recommended. The opening pattern, material thickness, and sealing face of 19202001 are matched to the pump plate geometry and the surrounding water passages. An improperly cut or incorrect-thickness generic gasket can change the pump clearances or leave part of the cooling circuit incompletely sealed, reducing cooling flow. At this price point, there is no practical reason to use a substitute.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShould I replace all water pump components at the same time?\u003c\/strong\u003e Yes. Best practice for water pump service is to replace the impeller, plate gasket, base gasket, housing seals, and any wear-prone components as a complete set. This avoids having to re-open the lower unit because a gasket or seal that was left in place then failed shortly after the impeller was replaced.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Numbers \u0026amp; Supersession\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Mercury OEM:\u003c\/strong\u003e 19202001 \/ 27-19202001\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 19202 \/ 42206\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-water-pump-base-gasket-192043\"\u003eMercury Water Pump Base Gasket 192043\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-water-pump-gasket-858524\"\u003eMercury Water Pump Gasket 858524 — MerCruiser Alpha One \u0026amp; Outboard\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-quicksilver-circulating-water-pump-gasket-879150138\"\u003eMercury Quicksilver Circulating Water Pump Gasket 879150138 — MerCruiser 3.0L\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercruiser-seal-8m0187157\"\u003eMercury MerCruiser Quicksilver 8M0187157 Gearcase Drain \u0026amp; Fill Screw Seal — Blue OEM Washer\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e This gasket is the correct OEM part for water pump plate service on Mercury and Mariner 6, 8, and 9.9 HP outboards where the diagram calls for 19202001 \/ 27-19202001. It’s most commonly needed during a routine impeller replacement — replacing the plate gasket at the same time as the impeller is the right approach and eliminates a common source of post-service cooling issues. If you are performing a full water pump service, replace all gaskets, seals, and the impeller together rather than individually.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Issues:\u003c\/strong\u003e The most frequent mistake is reusing the original plate gasket during an impeller replacement — the compressed gasket will not re-seal properly and can cause reduced cooling flow even with a new impeller installed. The second common issue is not confirming the serial number before ordering — this gasket supersedes the earlier 19202, and some older diagrams may still show the earlier number. Use 19202001 for any application that previously called for 19202 or 42206.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563839782948,"sku":"19202001","price":6.47,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/ec15054ce525a89bd67fff273e851704cbd85141f33a5c81150102714ce8cb87.webp?v=1777585909"},{"product_id":"mercury-gasket-192043","title":"Mercury Quicksilver 192043 Water Pump Base Gasket — 6–15 HP Outboard","description":"\u003csection class=\"product-description\"\u003e\n\n\u003ch2\u003eMercury Quicksilver 192043 — Water Pump Base Gasket, 6–15 HP Outboard\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e192043\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eService Format\u003c\/th\u003e\n\u003ctd\u003e27-192043\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003e192043\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMercury \/ Quicksilver (OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eWater Pump Base Gasket\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003ctd\u003eMercury \/ Mariner Outboard Lower Unit — Water Pump Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDiagram Position\u003c\/th\u003e\n\u003ctd\u003eDirectly beneath the water pump base assembly, sealing the pump base to the gearcase housing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSupersedes\u003c\/th\u003e\n\u003ctd\u003e192042\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSerial Range\u003c\/th\u003e\n\u003ctd\u003e0G760300 – 1B226999 (primary 6–15 HP application range)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eapprox. 18 g (0.04 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eGTIN\u003c\/th\u003e\n\u003ctd\u003e745061489080\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMercury Quicksilver 192043 is a genuine OEM water pump base gasket for selected Mercury and Mariner small outboards in the 6–15 HP range. It seals the base of the water pump assembly to the gearcase housing, maintaining a leak-free cooling-water circuit through the lower unit. It is the current replacement for the earlier gasket 192042 and is confirmed for selected 6–15 HP 2-stroke carbureted models and selected 9.9\/15 HP 4-stroke carbureted models within serial range 0G760300–1B226999.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSupersession note:\u003c\/strong\u003e If your service records or parts diagram shows 192042, use 192043 as the correct current OEM replacement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e Always confirm compatibility by exact engine model and serial number using the Mercury parts catalog before ordering. Mercury uses several different water pump base gaskets across the small-outboard range, and the correct gasket must match the specific pump base and gearcase assembly.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMercury \/ Mariner 6 HP outboard — 2-stroke carbureted (serial range 0G760300–1B226999, confirm by diagram)\u003c\/li\u003e\n  \u003cli\u003eMercury \/ Mariner 8 HP outboard — 2-stroke carbureted (serial range 0G760300–1B226999, confirm by diagram)\u003c\/li\u003e\n  \u003cli\u003eMercury \/ Mariner 9.9 HP outboard — 2-stroke carbureted and 4-stroke carbureted (serial range 0G760300–1B226999, confirm by diagram)\u003c\/li\u003e\n  \u003cli\u003eMercury \/ Mariner 10 HP outboard — 2-stroke carbureted (serial range 0G760300–1B226999, confirm by diagram)\u003c\/li\u003e\n  \u003cli\u003eMercury \/ Mariner 15 HP outboard — 2-stroke carbureted and 4-stroke carbureted (serial range 0G760300–1B226999, confirm by diagram)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlways confirm by exact engine model and serial number\u003c\/strong\u003e using the Mercury water-pump assembly diagram\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cp\u003eReplace this gasket \u003cstrong\u003eat every water pump service\u003c\/strong\u003e — whenever the water pump base is removed during impeller replacement or lower-unit service. Gaskets are a one-time-use component. Reusing a previously compressed or torn base gasket is one of the most common causes of cooling leaks after a pump rebuild.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eAt every water pump service — whenever the pump base is being removed\u003c\/li\u003e\n  \u003cli\u003eGasket is compressed, torn, hardened, or shows any damage\u003c\/li\u003e\n  \u003cli\u003eCooling-water leakage at the pump base-to-gearcase joint\u003c\/li\u003e\n  \u003cli\u003eEngine running warm or overheating with a water pump service being performed\u003c\/li\u003e\n  \u003cli\u003eAny time the lower unit is opened and the water pump base is disturbed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eClean the gearcase and water-pump-base mating surfaces completely before installing the new gasket — old gasket material or corrosion on either surface will prevent a proper seal\u003c\/li\u003e\n  \u003cli\u003eWhile the pump assembly is apart, inspect the water-inlet seal, quad ring, oil seals, face plate, and impeller for wear or damage — replacing all worn components in the same visit avoids having to re-open the lower unit shortly after\u003c\/li\u003e\n  \u003cli\u003eInstall the gasket in the correct orientation as shown in the Mercury water-pump diagram for the specific engine model and serial range\u003c\/li\u003e\n  \u003cli\u003eA complete water pump repair kit (see \u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-quicksilver-water-pump-repair-kit-42089a5\"\u003eWater Pump Repair Kit 42089A5\u003c\/a\u003e) replaces the impeller, housing, base gasket, and all related seals in one service — consider ordering the full kit rather than individual components\u003c\/li\u003e\n  \u003cli\u003eFollow torque specifications in the Mercury service manual for the pump housing fasteners after reassembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat is the difference between 192043 and the earlier 192042?\u003c\/strong\u003e 192043 is the current active Mercury OEM part number that supersedes the original 192042. They seal the same pump base location — 192043 is the correct current replacement for any application that previously used 192042. If your diagram still shows 192042, order 192043.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan I reuse the original base gasket during impeller service?\u003c\/strong\u003e No. The base gasket compresses under the clamping load of the pump housing and will not re-seal reliably if reused. A reused gasket is one of the most common causes of cooling-water leaks after a pump service. The gasket should always be replaced whenever the pump base is removed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShould I order the individual gasket or the full water pump repair kit?\u003c\/strong\u003e If the impeller is also being replaced — which it should be on any scheduled water pump service — the full \u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-quicksilver-water-pump-repair-kit-42089a5\"\u003eWater Pump Repair Kit 42089A5\u003c\/a\u003e is the more practical choice. The kit includes the impeller, housing, base gasket, and related seals in one package, which is more economical and thorough than ordering individual components for the same service.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat happens if the base gasket fails?\u003c\/strong\u003e A failed water pump base gasket allows cooling water to leak internally at the pump base, which reduces the volume of water delivered to the engine. Depending on the severity, this can cause the engine to run warm, overheat, or in sustained failure, sustain heat-related damage. The gasket is a low-cost, high-importance component in the cooling circuit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIs this gasket compatible with both 2-stroke and 4-stroke engines in the 6–15 HP range?\u003c\/strong\u003e Yes — 192043 is listed for both 2-stroke carbureted models and selected 9.9\/15 HP 4-stroke carbureted models within the specified serial range. Always confirm by exact model and serial number, as not all engines in this HP range use the same pump base assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Mercury OEM:\u003c\/strong\u003e 192043 \/ 27-192043\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 192042\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAftermarket equivalent:\u003c\/strong\u003e Sierra 18-0995\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-quicksilver-water-pump-repair-kit-42089a5\"\u003eMercury MerCruiser Quicksilver Water Pump Repair Kit 42089A5\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-water-pump-gasket-858524\"\u003eMercury Water Pump Gasket 858524 — MerCruiser Alpha One \u0026amp; Outboard\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercruiser-gasket-19202001\"\u003eMercury Quicksilver 19202001 Water Pump Plate Gasket — 6 \/ 8 \/ 9.9 HP Outboard\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-quicksilver-circulating-water-pump-gasket-879150138\"\u003eMercury Quicksilver Circulating Water Pump Gasket 879150138 — MerCruiser 3.0L\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercruiser-seal-8m0187157\"\u003eMercury MerCruiser Quicksilver 8M0187157 Gearcase Drain \u0026amp; Fill Screw Seal — Blue OEM Washer\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e This gasket is the correct OEM replacement for any water pump base service on Mercury and Mariner 6–15 HP outboards where the diagram calls for 192043 \/ 27-192043. It’s most commonly needed during a routine impeller replacement — the base gasket should always be replaced at the same time as the impeller, not saved for the next service. If you’re already in the pump, do the full job and replace the gasket. For a complete pump rebuild, order the \u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-mercruiser-quicksilver-water-pump-repair-kit-42089a5\"\u003eWater Pump Repair Kit 42089A5\u003c\/a\u003e to cover the impeller and all related components in one service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Issues:\u003c\/strong\u003e The most frequent mistake is reusing the original base gasket during an impeller replacement — the compressed gasket will not re-seal properly and can cause cooling leaks even with a new impeller installed. The second common issue is not confirming the serial number before ordering — Mercury uses different pump base assemblies across the small-outboard range, and the correct gasket must match the specific pump base geometry for the engine being serviced. Use the serial-number-specific parts diagram to confirm 192043 before ordering.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563839815716,"sku":"192043","price":11.61,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/1fc09dc5eb1b2c72f06cf64f0054e1ab1a85bdf3d34b73f872e9706f95d3b9ab.webp?v=1775779998"},{"product_id":"merc-62","title":"Mercury MerCruiser Quicksilver Quad Ring 20295 | 25-20295 | 1.725 x .210 in.","description":"\u003ch2\u003eMercury \/ MerCruiser Quicksilver Quad Ring 20295\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 20295  |  \u003cstrong\u003eService Format:\u003c\/strong\u003e 25-20295  |  \u003cstrong\u003eSize:\u003c\/strong\u003e 1.725 in. × 0.210 in.  |  \u003cstrong\u003eType:\u003c\/strong\u003e Quad ring  |  \u003cstrong\u003eGTIN:\u003c\/strong\u003e 745061573154\u003c\/p\u003e\u003cp\u003eGenuine Mercury \/ MerCruiser OEM quad-profile sealing ring used in selected MerCruiser and Mercury Racing \u003cstrong\u003eclosed-cooling \/ crossover assemblies\u003c\/strong\u003e. Mercury parts references identify 20295 specifically as the crossover-to-heat-exchanger seal on applicable high-performance engines, with \u003cstrong\u003etwo quad rings required per applicable assembly\u003c\/strong\u003e. A quad ring has a four-lobed cross-section that provides more sealing contact area than a standard O-ring of the same nominal size — do not substitute a round O-ring of the same dimensions. No confirmed newer OEM superseding number has been identified.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury \/ MerCruiser \/ Quicksilver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 20295\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService Format:\u003c\/strong\u003e 25-20295\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Quad ring (X-ring \/ four-lobed cross-section)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Diameter \/ ID Reference:\u003c\/strong\u003e 1.725 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-Section:\u003c\/strong\u003e 0.210 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePacked Dimensions:\u003c\/strong\u003e ~2.13 in. × 2.13 in. × 0.25 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~0.01 kg per unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN \/ UPC:\u003c\/strong\u003e 745061573154\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Closed-cooling crossover \/ heat-exchanger sealing circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical Quantity per Assembly:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFitment must be confirmed against the Mercury parts diagram for your exact engine model, cooling-system configuration, and serial number.\u003c\/strong\u003e Mercury used several different seals in the same closed-cooling assembly area — the diagram part number is the only reliable match.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMercury Racing 520\u003c\/li\u003e\n\u003cli\u003eMercury Racing 525 EFI — closed-cooling heat-exchanger \/ crossover assembly (qty 2)\u003c\/li\u003e\n\u003cli\u003eMercury Racing 540\u003c\/li\u003e\n\u003cli\u003eMercury Racing 565 EFI\u003c\/li\u003e\n\u003cli\u003eMercury Racing 600 SCi\u003c\/li\u003e\n\u003cli\u003eMercury Racing 662 SCi\u003c\/li\u003e\n\u003cli\u003eMercury Racing 700 SCi\u003c\/li\u003e\n\u003cli\u003eMerCruiser 8.2L MAG — closed-cooling crossover assembly (verify by serial number)\u003c\/li\u003e\n\u003cli\u003eMerCruiser 8.2L MAG H.O. — closed-cooling crossover assembly (verify by serial number)\u003c\/li\u003e\n\u003cli\u003eMerCruiser 8.2L Inboard EC (selected serial ranges — verify by diagram)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDiagram Position \u0026amp; Assembly Context\u003c\/h3\u003e\u003cp\u003eOn 525 EFI and 8.2L MAG closed-cooling systems, Mercury parts diagrams show the following seals in the same heat-exchanger \/ crossover area. These are \u003cstrong\u003eseparate, non-interchangeable parts\u003c\/strong\u003e — confirm each by its diagram position before ordering:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e20295\u003c\/strong\u003e — Quad Ring 1.725 × .210 in. — qty 2 — crossover-to-heat-exchanger seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30529\u003c\/strong\u003e — O-Ring 1.925 × .103 in. — separate position in the same assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8071341\u003c\/strong\u003e — Thermostat seal — separate position\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M0039163\u003c\/strong\u003e — Heat-exchanger O-ring — separate position\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThe crossover or heat-exchanger joint is being opened for any reason\u003c\/li\u003e\n\u003cli\u003eCoolant seepage is present at the crossover fitting\u003c\/li\u003e\n\u003cli\u003eThe ring is flattened, permanently compressed, cut, nicked, hardened, swollen, or cracked\u003c\/li\u003e\n\u003cli\u003eBest practice: replace all seals in the assembly during any major cooling-system service — reusing a compressed seal is a common source of post-service leaks\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eClean the quad-ring groove and all mating surfaces thoroughly before installing the new seal\u003c\/li\u003e\n\u003cli\u003eSeat the quad ring evenly in the groove — do not twist, pinch, or roll it during assembly\u003c\/li\u003e\n\u003cli\u003eLubricate with the coolant-compatible lubricant or sealant specified in the Mercury service manual for this assembly\u003c\/li\u003e\n\u003cli\u003eVerify both 20295 quad rings are correctly seated before closing the crossover \/ heat-exchanger joint\u003c\/li\u003e\n\u003cli\u003eDo not substitute a standard round O-ring — the quad-ring profile is specified for this sealing position\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRelated Parts \u0026amp; Service Items\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-mercruiser-quicksilver-thermostat-housing-gasket-806871\"\u003eMercury MerCruiser Quicksilver Thermostat Housing Gasket 806871\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercruiser-thermostat-cover-housing-8m0061068-454-502-big-block\"\u003eMerCruiser Thermostat Cover Housing 8M0061068 — 454 \/ 502 Big Block\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercruiser-thermostat-991551\"\u003eMerCruiser Thermostat 991551\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/mercury-antifreeze-100f-1-gallon-8m0073203\"\u003eMercury Antifreeze -100°F 1 Gallon — 8M0073203\u003c\/a\u003e — for closed-cooling system service\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/mercury-mercruiser-quicksilver-o-ring-201951-0-487-x-0-103-in\"\u003eMercury MerCruiser Quicksilver O-Ring 201951 — 0.487 × 0.103 in.\u003c\/a\u003e — related OEM sealing ring\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e 20295 is the right seal when you are opening the crossover-to-heat-exchanger connection on a closed-cooling MerCruiser or Mercury Racing engine. Order two — the diagram calls for one on each side of the fitting, and having both on hand before you start the job means no delays mid-service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon customer issue:\u003c\/strong\u003e Confusing 20295 with one of the other seals that sit nearby in the same assembly — particularly 30529 (a round O-ring, different size) or 8M0039163 (the heat-exchanger O-ring). They can look similar out of context, but each seats in a specific groove and is not interchangeable with the others. The closed-cooling diagram for your exact engine is the definitive reference — if you need help reading it, our parts desk can confirm which seal goes where before you order.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563840143396,"sku":"20295","price":11.84,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/e6bcbc9c-4f80-4143-a3d3-ed32e9d7ced3.png?v=1777586719"},{"product_id":"merc-65","title":"Mercury Quicksilver Washer 20583","description":"\u003ch2\u003eMercury Quicksilver Washer 20583\u003c\/h2\u003e\n\u003cp\u003eA genuine Quicksilver OEM washer used across a wide range of Mercury, Mariner, MerCruiser, and Bravo assemblies. Catalogued as \u003cstrong\u003e12-20583\u003c\/strong\u003e, this small hardware washer provides proper fastening, spacing, or load distribution at the specific diagram position where it is called out. Because it appears in many different assemblies, the parts diagram is the most reliable way to confirm you have the right part.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Quicksilver OEM washer\u003c\/li\u003e\n\u003cli\u003ePart number: \u003cstrong\u003e20583\u003c\/strong\u003e \/ \u003cstrong\u003e12-20583\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN \/ UPC: \u003cstrong\u003e745061130005\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWide application range across Mercury, Mariner, MerCruiser, and Bravo assemblies\u003c\/li\u003e\n\u003cli\u003eFactory-spec material and dimensions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eEngine \u0026amp; Drive Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis washer appears across many Mercury and MerCruiser parts diagrams, including select older Mercury \/ Mariner outboards, Bravo One \/ Two \/ Three sterndrives, Bravo XR \/ X drives, Blackhawk applications, integrated and high-performance transom assemblies, remote controls, and several older MerCruiser engine assemblies — depending on diagram location and serial number range.\u003c\/p\u003e\n\n\u003ch2\u003eFitment Notice\u003c\/h2\u003e\n\u003cp\u003eWasher fitment depends on the exact engine, drive, transom assembly, control assembly, component group, and diagram position. Always confirm using your Mercury or MerCruiser serial number and the specific parts diagram before ordering — this washer appears in many different assemblies and the diagram location is the definitive match.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cp\u003eReplace when the washer is missing, corroded, bent, distorted, worn, or damaged during removal. Small hardware in a fastener stack should also be replaced when the assembly requires even clamping across the mating surfaces.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eConfirm the washer's exact position in the Mercury parts diagram before installation. Match it with the correct screw, bolt, nut, bracket, or linkage component for the assembly being serviced. Tighten related hardware to the torque specification in the Mercury service manual for your specific engine or drive.\u003c\/p\u003e\n\n\u003ch2\u003eAlternate Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury \/ Quicksilver:\u003c\/strong\u003e 12-20583\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase reference:\u003c\/strong\u003e 20583\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/marisolmarine.com\/products\/merc-64\"\u003eMercury Quicksilver Washer 0.390\" × 0.750\" × 0.093\" — 20572\u003c\/a\u003e — OEM flat washer for Mercury \/ MerCruiser assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/marisolmarine.com\/products\/merc-6\"\u003eMercury MerCruiser Quicksilver Tab Washer 12657\u003c\/a\u003e — OEM tab washer for Mercury \/ MerCruiser assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-washer-20086\"\u003eMercury Washer 20086 (Pack of 5)\u003c\/a\u003e — OEM washer 5-pack for Mercury assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/marisolmarine.com\/products\/mercury-thrust-washer-18448\"\u003eMercury Thrust Washer 18448\u003c\/a\u003e — OEM thrust washer for Mercury outboard lower units\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This washer is the right choice when the Mercury or MerCruiser parts diagram specifically calls out \u003cstrong\u003e12-20583\u003c\/strong\u003e at a fastener, bracket, or linkage position. Its wide application range is actually the reason to be precise — because it shows up in so many different assemblies, matching by diagram location rather than by engine family or appearance is the only reliable way to confirm you have the right part. If you are servicing a Bravo drive, transom assembly, or older MerCruiser engine and the diagram shows 12-20583, this is your part.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563840536612,"sku":"20583","price":2.14,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/download_70c4a0ba-0b95-4e6d-85a2-581449446c35.jpg?v=1777586827"},{"product_id":"merc-69","title":"Mercury MerCruiser Quicksilver 20826 Gear Housing O-Ring — 2.230\" × 0.139\"","description":"\u003csection class=\"product-description\"\u003e\n\n\u003ch2\u003eMercury MerCruiser Quicksilver 20826 — Gear Housing O-Ring, 2.230\" × 0.139\"\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e20826\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eService Format\u003c\/th\u003e\n\u003ctd\u003e25-20826\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003e20826\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMercury \/ Quicksilver (OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eGear Housing O-Ring\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e2.230\" ID × 0.139\" cross-section\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003ctd\u003eMercury Sterndrive Gear Housing \/ Jet-Drive Housing \/ Transom Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDiagram Position\u003c\/th\u003e\n\u003ctd\u003eTop housing cover and selected upper gear-housing sealing locations\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDimensions (pkg)\u003c\/th\u003e\n\u003ctd\u003e4.50\" × 3.00\" × 0.35\"\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eapprox. 10 g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eGTIN\u003c\/th\u003e\n\u003ctd\u003e745061130197\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMercury Quicksilver 20826 is a genuine OEM gear-housing O-ring used across a wide range of Mercury and MerCruiser sterndrive, jet-drive, transom, and Mercury Racing assemblies. It is a 2.230\" ID × 0.139\" cross-section O-ring used at gear-housing top covers and selected upper gear-housing sealing positions where Mercury parts diagrams specifically call for 20826 \/ 25-20826.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e This O-ring appears across multiple Mercury assembly types. Mercury uses several different-sized O-rings in the same gearcase and jet-drive housings — the correct O-ring is determined by the exact parts diagram position and serial number, not by diameter or visual comparison alone. Always confirm by the serial-number-specific parts diagram before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMerCruiser Bravo One sterndrive — gear-housing and top-cover sealing positions (confirm diagram location and serial range)\u003c\/li\u003e\n  \u003cli\u003eMerCruiser Bravo Two sterndrive — gear-housing and top-cover sealing positions (confirm diagram location and serial range)\u003c\/li\u003e\n  \u003cli\u003eMerCruiser Bravo Three sterndrive — gear-housing and top-cover sealing positions (confirm diagram location and serial range)\u003c\/li\u003e\n  \u003cli\u003eMerCruiser Bravo X \/ Bravo XR \/ Bravo SportMaster — selected housing sealing positions (confirm diagram location and serial range)\u003c\/li\u003e\n  \u003cli\u003eMercury integrated and high-performance transom assemblies — selected positions (confirm diagram location and serial range)\u003c\/li\u003e\n  \u003cli\u003eMercury jet-drive housings — 120XR2, 175XR2, 200 DFI, 210 Carb, 240 EFI, 250 DFI jet-drive component groups (confirm diagram location and serial range)\u003c\/li\u003e\n  \u003cli\u003eMercury Racing engine and drive applications — selected housing sealing positions (confirm diagram location and serial range)\u003c\/li\u003e\n  \u003cli\u003eSelected older Mercury 60 HP and Mark-series outboard applications (confirm diagram location and serial range)\u003c\/li\u003e\n  \u003cli\u003eAssemblies adjacent to coupling kit 88243A3 — where diagram specifies 20826\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAlways confirm by exact engine\/drive model, serial number, and diagram position\u003c\/strong\u003e — this O-ring is used in multiple unrelated Mercury assembly locations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWhenever the housing or cover it seals is removed — O-rings should not be reused once the joint has been separated\u003c\/li\u003e\n  \u003cli\u003eO-ring is flattened, cut, hardened, swollen, cracked, or otherwise damaged\u003c\/li\u003e\n  \u003cli\u003eLubricant or water leakage at the housing joint after the assembly was last serviced\u003c\/li\u003e\n  \u003cli\u003eDuring any gear-housing, jet-drive housing, or top-cover service where the O-ring groove is accessible\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eClean the O-ring groove and all mating surfaces before installation — inspect for corrosion, burrs, or debris that could damage the new O-ring or prevent proper seating\u003c\/li\u003e\n  \u003cli\u003eLightly lubricate the O-ring with the lubricant specified in the Mercury service manual for the exact assembly before installation\u003c\/li\u003e\n  \u003cli\u003eSeat the O-ring evenly in the groove — do not twist, stretch, pinch, or nick it during assembly; a twisted or nicked O-ring will not seal and can cause an immediate leak\u003c\/li\u003e\n  \u003cli\u003eConfirm the correct diagram position before installing — this O-ring is used in multiple Mercury assembly locations and the correct position matters for proper sealing\u003c\/li\u003e\n  \u003cli\u003eDo not reuse the old O-ring — a previously compressed O-ring will not seal reliably even if it looks undamaged\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhy can’t I just use a generic O-ring of the same diameter?\u003c\/strong\u003e O-ring sealing performance depends on both the inner diameter and the cross-section diameter. A ring with the correct ID but the wrong cross-section will be either too loose in the groove (causing leaks) or too tight (causing installation damage). Material hardness and compound also affect compression set and resistance to the specific fluids in the assembly. The OEM Mercury O-ring is sized and compounded for the exact groove and fluid environment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHow do I confirm which O-ring my assembly needs?\u003c\/strong\u003e Look up your exact drive, engine, or jet-drive model and serial number in the Mercury parts catalog and locate the specific diagram that shows the housing or cover you are servicing. The diagram will show the correct O-ring part number for each position. This is the only reliable way to confirm the right O-ring when multiple sizes are used in the same assembly area.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWhat happens if water gets past the gear-housing O-ring?\u003c\/strong\u003e Water intrusion into the gear housing dilutes the gear lube, which causes rapid bearing and gear wear. In most cases the damage is not immediately apparent but accelerates over time. A failed housing O-ring is one of the most preventable causes of gearcase failure — replacing O-rings during any housing service eliminates this risk.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShould I replace all O-rings in the housing at the same time?\u003c\/strong\u003e Yes, in most cases. If the housing has been opened, replacing all O-rings in the assembly as a set adds minimal cost and eliminates the need to reopen the housing later for an O-ring that was reused and then failed. Mercury service kits for gear-housing service typically include all O-rings for the assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Numbers \u0026amp; Cross-References\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMercury OEM:\u003c\/strong\u003e 20826 \/ 25-20826\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEarlier superseded references:\u003c\/strong\u003e 20311 \/ 25-20311 \/ 802020\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAftermarket equivalents:\u003c\/strong\u003e Sierra 18-7104 \/ Sierra 18-7459 \/ GLM 82280\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eJohnson \/ Evinrude \/ OMC cross-references:\u003c\/strong\u003e 0308627 \/ 0509370 \/ 0777539 \/ 308627 (confirm application by diagram)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest Use Case:\u003c\/strong\u003e This O-ring is the right call when servicing a Mercury sterndrive gear housing, jet-drive housing, or transom assembly where the parts diagram specifically calls for 20826 \/ 25-20826 at the housing cover or upper gear-housing sealing position. It’s a low-cost part that should always be replaced during any housing service rather than reused — the cost of the O-ring is negligible compared to the cost of reopening a housing due to a failed seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Issues:\u003c\/strong\u003e The most frequent mistake is selecting an O-ring by diameter alone without confirming the cross-section. Mercury uses several O-rings with similar IDs but different cross-section dimensions in the same gear-housing area — and they are not interchangeable. The second common issue is reusing the original O-ring during reassembly. A previously compressed O-ring may look acceptable but will not seal reliably in service, especially in high-vibration or temperature-cycling marine applications.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563840667684,"sku":"20826","price":7.94,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/3ae39026-59fb-44d4-9d79-36d47140b40e.png?v=1777587320"},{"product_id":"merc-70","title":"Mercury MerCruiser Quicksilver Gimbal Housing O-Ring 20863","description":"\u003ch2\u003ePart Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 20863 \/ 25-20863\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury Marine \/ Quicksilver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN \/ UPC:\u003c\/strong\u003e 745061130234\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (cross-reference):\u003c\/strong\u003e 2-5\/8 in. I.D. × 2-7\/8 in. O.D. × 1\/8 in. width\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Sealing — gimbal housing, bearing carrier, upper bearing housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagram Position:\u003c\/strong\u003e Gimbal housing assembly (MerCruiser transom); bearing carrier (select Mercury gear housings)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQty Per Assembly:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout This Part\u003c\/h2\u003e\n\u003cp\u003eGenuine Mercury Marine \/ Quicksilver 25-20863 is an OEM O-ring seal used in selected older MerCruiser and Mercury assemblies. In MerCruiser applications, Mercury parts diagrams place this O-ring directly in the gimbal housing assembly, where it seals the transom \/ sterndrive mounting interface. The same part number also appears in some older Mercury gear-housing diagrams as a bearing-carrier O-ring. Because Mercury reused this number across assemblies, the exact diagram position must be confirmed before ordering — appearance alone is not a reliable guide.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSelect MerCruiser sterndrive transom assemblies — gimbal housing O-ring position\u003c\/li\u003e\n\u003cli\u003eOlder Mercury gear housings — bearing carrier sealing application\u003c\/li\u003e\n\u003cli\u003eSelect small Mercury outboards — upper bearing housing sealing application\u003c\/li\u003e\n\u003cli\u003eSelect Mercury \/ Mariner outboards: 4.5 HP, 7.5 HP, 45, 50, 55, 60, 75 HP (3-cylinder), 450, 500 series — confirm by serial number range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eAlways verify fitment using your engine or drive serial number and the exact Mercury \/ MerCruiser parts diagram before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eSerial Number \u0026amp; Fitment Notice\u003c\/h2\u003e\n\u003cp\u003eFor MerCruiser applications, confirm that the transom or gimbal-housing diagram specifically calls for 20863 \/ 25-20863. Mercury uses other O-rings in the same assemblies — including \u003ca href=\"\/products\/8131399024676\"\u003eO-Ring 23145\u003c\/a\u003e in certain configurations — so using the exact diagram is the safest approach.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cp\u003eReplace this O-ring whenever the gimbal housing or mating housing is disassembled for service, or if the existing seal appears flattened, hardened, cracked, cut, swollen, or is actively leaking. Reusing a compressed or aged O-ring after reassembly risks repeat leaks.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eClean the O-ring groove and all mating surfaces before installation. Inspect the surrounding gimbal housing for corrosion, burrs, or scoring. Install the new O-ring without twisting, stretching, or pinching it into the groove. Confirm the exact diagram position — this O-ring appears in multiple Mercury and MerCruiser assemblies.\u003c\/p\u003e\n\n\u003ch2\u003eAlternate \u0026amp; Cross-Reference Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM:\u003c\/strong\u003e 20863 \/ 25-20863\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAftermarket (Sierra):\u003c\/strong\u003e 18-7152\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAftermarket (GLM):\u003c\/strong\u003e 82310\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelated gimbal-housing O-ring (select assemblies):\u003c\/strong\u003e \u003ca href=\"\/products\/8131399024676\"\u003e23145\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insight\u003c\/h2\u003e\n\u003cp\u003eThis O-ring is best treated as a diagram-specific seal rather than a generic replacement. In MerCruiser sterndrive applications it seats in the gimbal housing; in older Mercury outboard gear cases it appears as a bearing-carrier seal. A generic O-ring may look similar in diameter but can have the wrong cross-section or rubber compound, changing how it compresses and holds under load. Match by part number and diagram position — not by size or appearance alone.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563840700452,"sku":"20863","price":6.89,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/608373f2-7867-4fe3-b002-4ebc04fa061f.png?v=1777587618"},{"product_id":"merc-88","title":"Mercury Quicksilver Water Pump Base O-Ring 26722 | 25-26722","description":"\u003ch2\u003eMercury Quicksilver Water Pump Base O-Ring — Part No. 26722 \/ 25-26722\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 26722\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService Number:\u003c\/strong\u003e 25-26722\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Quicksilver (Genuine Mercury Marine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e O-Ring — Water Pump Base \/ Driveshaft Carrier Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 745061132344\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 20266 → 26722\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical Quantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Cooling \/ Water Pump \/ Gearcase Lower Unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat This Part Does\u003c\/h2\u003e\n\u003cp\u003eThis genuine OEM O-ring seals the \u003cstrong\u003ewater pump base\u003c\/strong\u003e and \u003cstrong\u003edriveshaft carrier\u003c\/strong\u003e area on Mercury outboard gearcases. Depending on the assembly and diagram, it may be called an \u003cem\u003eO-ring, water pump base\u003c\/em\u003e or \u003cem\u003eO-ring, driveshaft carrier\u003c\/em\u003e — both refer to this same part number in the relevant exploded views. A failed seal in this location allows water ingestion or coolant loss, making this a critical service component during any lower-unit or water-pump rebuild.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cp\u003eConfirm by serial number and current Mercury parts diagram before ordering. Documented applications include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMark 35A\u003c\/li\u003e\n\u003cli\u003eMark 50 \/ 50E\u003c\/li\u003e\n\u003cli\u003eMark 55 \/ 55E\u003c\/li\u003e\n\u003cli\u003eMark 75-series\u003c\/li\u003e\n\u003cli\u003e300 \/ 350\u003c\/li\u003e\n\u003cli\u003e400 \/ 450\u003c\/li\u003e\n\u003cli\u003e500 \/ 50\u003c\/li\u003e\n\u003cli\u003e600\u003c\/li\u003e\n\u003cli\u003e40 \/ 402\u003c\/li\u003e\n\u003cli\u003e70 HP 3-cylinder\u003c\/li\u003e\n\u003cli\u003eSelected 15, 20, and 25 HP outboards (later Mercury listings)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSerial Number \u0026amp; Diagram Requirements\u003c\/h2\u003e\n\u003cp\u003eBecause 26722 is used across multiple Mercury gearcase generations, always confirm the exact engine serial number and cross-reference the water-pump or gearcase diagram for your specific model before ordering. The part's position may be labeled differently depending on the assembly revision.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAny time the water pump base or driveshaft carrier is removed\u003c\/li\u003e\n\u003cli\u003eWhen the existing O-ring is flattened, cracked, hardened, or cut\u003c\/li\u003e\n\u003cli\u003eIf water intrusion or cooling loss is found near the water-pump base\u003c\/li\u003e\n\u003cli\u003eDuring lower-unit rebuilds — treat as a one-time-use seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the mating groove and sealing surfaces for nicks or corrosion before fitting\u003c\/li\u003e\n\u003cli\u003eInstall without twisting, pinching, or rolling the O-ring\u003c\/li\u003e\n\u003cli\u003eLightly lubricate with a compatible marine grease before seating\u003c\/li\u003e\n\u003cli\u003eFollow the Mercury service manual for torque and reassembly sequence\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDiagram Position \u0026amp; Related Assembly Parts\u003c\/h2\u003e\n\u003cp\u003eIn Mercury water-pump diagrams, 26722 is located at the water pump base. Associated parts in the same assembly area include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e77177A1 — Water Pump Base Assembly\u003c\/li\u003e\n\u003cli\u003e90562 — Water Pump Base Seal\u003c\/li\u003e\n\u003cli\u003e79831 — Water Pump Base Seal\u003c\/li\u003e\n\u003cli\u003e19552 \/ 19553 — Water Pump Base Gaskets\u003c\/li\u003e\n\u003cli\u003e32768 — Face Plate\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131435921444\"\u003e89983T — Water Pump Impeller (Mercury MerCruiser Quicksilver)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131435921444\"\u003eMercury MerCruiser Quicksilver Impeller 89983T\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/474797604900\"\u003eMarine Gaskets, Seals \u0026amp; O-Rings — Full Collection\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003eBest used as the OEM seal during any Mercury outboard water pump service or lower-unit rebuild where the diagram specifies 26722. This is one of the more frequently overlooked seals in a water pump kit — customers who skip it on a pump rebuild often return with a cooling complaint within a season. Always match by part number: O-rings that appear identical can differ in compound hardness and will fail prematurely in the wrong application. If your engine has been repowered or updated, cross-reference the current Mercury diagram to confirm 26722 hasn't been further superseded for your serial range.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563841650724,"sku":"26722","price":4.19,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/image-gen-1_20260811-210452.png?v=1786562803"},{"product_id":"mercury-mercruiser-quicksilver-lockwasher-8m0204647","title":"Quicksilver Lockwasher 8M0204647 (.312 in.) | Mercury MerCruiser OEM Hardware","description":"\u003ch2\u003eQuicksilver OEM Lockwasher — Part No. 8M0204647\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 8M0204647\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegacy Reference:\u003c\/strong\u003e 26993\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Quicksilver (Genuine Mercury Marine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Lockwasher (.312 in.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Hardware \/ Fasteners — Mercury and MerCruiser assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Carburetor and fuel system service hardware; broad application across Mercury assemblies where the diagram specifies 8M0204647\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat This Part Does\u003c\/h2\u003e\n\u003cp\u003eThis genuine OEM lockwasher prevents fasteners from backing out under vibration and load — a critical function in any marine engine or drive assembly. Lockwashers are single-use hardware; once a lockwasher has been compressed and removed, it will not provide the same clamping retention on reassembly. Always fit a new lockwasher when reassembling any fastener stack that calls for one.\u003c\/p\u003e\n\n\u003cp\u003ePart 8M0204647 is most commonly called out in carburetor and fuel system service where fasteners and sealing hardware are replaced as a set, though it appears across a range of Mercury and MerCruiser assemblies. Always match by part number from your Mercury diagram — do not substitute by size alone.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMercury outboard and MerCruiser carburetor assemblies where the diagram specifies 8M0204647\u003c\/li\u003e\n\u003cli\u003eFuel system service hardware groups\u003c\/li\u003e\n\u003cli\u003eOther Mercury or MerCruiser assemblies where the parts diagram calls for this lockwasher\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm the exact diagram position using your engine model and serial number before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAny time the fastener is removed from the assembly — lockwashers are single-use\u003c\/li\u003e\n\u003cli\u003eWasher is visibly crushed, deformed, corroded, or missing\u003c\/li\u003e\n\u003cli\u003eAssembly is being serviced and hardware renewal is specified in the service manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the exact position in the Mercury parts diagram before installing\u003c\/li\u003e\n\u003cli\u003eNever reuse a lockwasher that has been previously compressed\u003c\/li\u003e\n\u003cli\u003eTighten the associated fastener to the torque specification in the Mercury service manual for the assembly being serviced\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Ordered With\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131398828068\"\u003eMercury MerCruiser Quicksilver Water Tube O-Ring 8M0204645\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131399221284\"\u003eMercury MerCruiser Gasket Inlet Seat 25033\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/475236925476\"\u003eFasteners \u0026amp; Mounting Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/476929687588\"\u003eMercury MerCruiser Gaskets \u0026amp; Seals\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003eBest used as a direct OEM replacement wherever the Mercury or MerCruiser diagram calls for 8M0204647 — most often seen in carburetor rebuild and fuel system service kits. The most common oversight is reusing the old lockwasher during reassembly: a previously compressed lockwasher loses its spring tension and will not provide reliable clamping retention. Replace it every time. For carburetor service, pair this with the \u003ca href=\"\/products\/8131398828068\"\u003eWater Tube O-Ring 8M0204645\u003c\/a\u003e and \u003ca href=\"\/products\/8131399221284\"\u003eInlet Seat Gasket 25033\u003c\/a\u003e to complete the hardware set in one order.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563841749028,"sku":"26993","price":2.36,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/9a1cb3c0-82f9-48de-af5b-414e9607a200.png?v=1786488392"},{"product_id":"merc-105","title":"Quicksilver Water Pump Housing O-Ring 29439 | 1.185 in. ID | Mercury MerCruiser OEM","description":"\u003ch2\u003eQuicksilver OEM Water Pump Housing O-Ring — Part No. 29439 \/ 25-29439\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 29439\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService Format:\u003c\/strong\u003e 25-29439\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Quicksilver (Genuine Mercury Marine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e O-Ring — Water Pump Housing Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter (ID):\u003c\/strong\u003e 1.185 in. \/ 30.1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth (Cross-Section):\u003c\/strong\u003e 0.100 in. \/ 2.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN \/ UPC:\u003c\/strong\u003e 745061133464\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Cooling \/ Lower Unit — water pump housing and gear housing sealing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat This Part Does\u003c\/h2\u003e\n\u003cp\u003eThis genuine OEM O-ring seals the \u003cstrong\u003ewater pump housing\u003c\/strong\u003e in compatible Mercury, Mariner, and MerCruiser assemblies. A failed or aged water pump housing O-ring allows cooling water to bypass or leak at the housing joint, which can reduce pump efficiency and lead to overheating. This O-ring should be replaced any time the water pump housing is opened — reusing the old seal is not recommended as it compresses and loses its sealing ability over time.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eMercury \/ Mariner Outboards (confirm by serial number):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3.9 HP, 4 HP, 4.5 HP outboards\u003c\/li\u003e\n\u003cli\u003e6 HP, 7.5 HP outboards\u003c\/li\u003e\n\u003cli\u003e9.8 HP outboards\u003c\/li\u003e\n\u003cli\u003e40 HP, 60 HP outboards\u003c\/li\u003e\n\u003cli\u003e75 HP, 110 HP outboards\u003c\/li\u003e\n\u003cli\u003eSelected Mark-series outboard applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMerCruiser Big-Block Applications (confirm by serial number):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e454 MAG MPI Horizon\u003c\/li\u003e\n\u003cli\u003e7.4L MPI MIE\u003c\/li\u003e\n\u003cli\u003e8.2L MIE MPI\u003c\/li\u003e\n\u003cli\u003e454 MAG MPI Bravo\u003c\/li\u003e\n\u003cli\u003e502 MAG MPI Bravo\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAlways confirm by exact engine or drive serial number and the current Mercury parts diagram before ordering — 29439 appears across both outboard and MerCruiser gear housing\/water pump housing applications.\u003c\/p\u003e\n\n\u003ch2\u003eAftermarket Cross-References\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSierra 18-7156 \/ 18-7156-9\u003c\/li\u003e\n\u003cli\u003eGLM 81230\u003c\/li\u003e\n\u003cli\u003eJohnson \/ Evinrude \/ OMC 309731\u003c\/li\u003e\n\u003cli\u003eVolvo Penta 3852537 (related cross-reference in supported applications)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAny time the water pump housing or gear housing is opened for service\u003c\/li\u003e\n\u003cli\u003eO-ring is flattened, cut, brittle, swollen, cracked, or missing\u003c\/li\u003e\n\u003cli\u003eWater pump is leaking at the housing joint\u003c\/li\u003e\n\u003cli\u003eDuring routine water pump impeller replacement — replace all housing seals at the same time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean the O-ring groove and mating surface thoroughly before installing the new seal\u003c\/li\u003e\n\u003cli\u003eLightly lubricate the O-ring with the lubricant specified in the Mercury service manual for the assembly\u003c\/li\u003e\n\u003cli\u003eSeat the O-ring evenly in the groove — avoid twisting, pinching, or rolling during installation\u003c\/li\u003e\n\u003cli\u003eConfirm the exact groove location in the Mercury parts diagram before fitting\u003c\/li\u003e\n\u003cli\u003eDo not reuse the old O-ring after removal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131442016292\"\u003eMercury MerCruiser Quicksilver Water Pump Repair Kit 8M0135821\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131425206308\"\u003eMercury Water Pump Gasket 858524 — MerCruiser Alpha One \u0026amp; Outboard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131424288804\"\u003eMercury MerCruiser Water Pump to Gear Housing Gasket 27-85610\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131406364708\"\u003eMercury MerCruiser Quicksilver Water Pump Cover-to-Face-Plate Gasket 43033\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/474797604900\"\u003eMarine Gaskets, Seals \u0026amp; O-Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/476929687588\"\u003eMercury MerCruiser Gaskets \u0026amp; Seals\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e29439 is one of those O-rings that’s worth adding to any water pump service order as a matter of routine — the housing is already apart, the part is inexpensive, and an aged O-ring that weeps at the housing joint will bring the engine back to the bench for repeat work. The broad application range (small outboards through big-block MerCruiser) means it’s important to confirm by serial number and diagram rather than engine family alone. The most common issue is reusing the old O-ring during reassembly: it has already taken a compression set and will not seal with the same reliability as a new part.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563842469924,"sku":"29439","price":4.94,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/0b10e925-50df-4a19-aa75-298f04dba595.png?v=1777589253"},{"product_id":"merc-107","title":"Quicksilver O-Ring 8M0204650 | Mercury MerCruiser OEM Seal","description":"\u003ch2\u003eQuicksilver OEM O-Ring — Part No. 8M0204650 \/ 25-8M0204650\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 8M0204650\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService Format:\u003c\/strong\u003e 25-8M0204650\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 29845 → 8M0204650 (current)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Quicksilver (Genuine Mercury Marine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e O-Ring — OEM sealing ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN \/ UPC:\u003c\/strong\u003e 745061133709\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e MerCruiser sterndrive — driveshaft housing, yoke, and related drive sealing applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat This Part Does\u003c\/h2\u003e\n\u003cp\u003eThis genuine OEM O-ring seals mating components in selected MerCruiser sterndrive and marine engine assemblies, preventing fluid and water intrusion at the joint. Mercury parts diagrams identify 8M0204650 as a \u003cstrong\u003eyoke-end O-ring\u003c\/strong\u003e in Alpha One Gen II driveshaft-housing applications, with some assemblies specifying two O-rings at this location. It also appears in upper driveshaft, drive-gear, and coupler-end yoke assemblies across additional MerCruiser families.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSupersession note:\u003c\/strong\u003e 8M0204650 is the current active replacement for Mercury part \u003cstrong\u003e29845\u003c\/strong\u003e. If your parts diagram shows 29845, this is the correct OEM replacement. The service format \u003cstrong\u003e25-8M0204650\u003c\/strong\u003e may appear in Mercury dealer ordering systems.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCritical matching note:\u003c\/strong\u003e MerCruiser sterndrive assemblies use many O-rings that look nearly identical. Match strictly by part number — do not select by appearance or approximate diameter alone.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAlpha One Gen II sterndrive — driveshaft housing yoke-end O-ring (confirm quantity by diagram — some assemblies use two)\u003c\/li\u003e\n\u003cli\u003eAlpha One Gen II upper driveshaft and drive-gear assemblies\u003c\/li\u003e\n\u003cli\u003eCoupler-end yoke assemblies\u003c\/li\u003e\n\u003cli\u003eSelected Blackhawk sterndrive assemblies\u003c\/li\u003e\n\u003cli\u003eAny Mercury or MerCruiser assembly where the current diagram specifies 8M0204650, 25-8M0204650, or superseded number 29845\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm by exact engine or drive serial number and the current Mercury parts diagram before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eSuperseded Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e29845 → \u003cstrong\u003e8M0204650\u003c\/strong\u003e (current active number)\u003c\/li\u003e\n\u003cli\u003eService format: \u003cstrong\u003e25-8M0204650\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAny time the sealed joint is opened for service — O-rings are single-use\u003c\/li\u003e\n\u003cli\u003eO-ring is flattened, cut, cracked, hardened, or visibly deteriorated\u003c\/li\u003e\n\u003cli\u003eFluid or water leak is present at the yoke, driveshaft housing, or associated joint\u003c\/li\u003e\n\u003cli\u003eYoke, bearing, seal, or related drive component is being serviced\u003c\/li\u003e\n\u003cli\u003eWhere the diagram specifies more than one 8M0204650, replace the full quantity for that assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean the O-ring groove and all mating surfaces — remove old lubricant, corrosion, and debris before installing the new seal\u003c\/li\u003e\n\u003cli\u003eLubricate the O-ring only with the lubricant specified in the applicable Mercury service procedure\u003c\/li\u003e\n\u003cli\u003eSeat the O-ring evenly without twisting, stretching, or pinching\u003c\/li\u003e\n\u003cli\u003eReplace the full quantity specified in the diagram — do not reuse any O-rings that have been removed\u003c\/li\u003e\n\u003cli\u003eInspect adjacent seals and hardware while the assembly is apart\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/474797604900\"\u003eMarine Gaskets, Seals \u0026amp; O-Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/476929687588\"\u003eMercury MerCruiser Gaskets \u0026amp; Seals\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/476761423908\"\u003eMercury MerCruiser Engine Maintenance Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e8M0204650 is one of those sterndrive O-rings where the part number matters far more than appearance — MerCruiser drive assemblies use several O-rings that look nearly identical, and selecting the wrong one will result in a premature seal failure that brings the drive back apart for repeat labor. The yoke-end location in particular is worth doing correctly the first time: it’s buried in the driveshaft housing, and getting back to it is not a quick job. Replace both O-rings where the diagram calls for two, and check the legacy number 29845 on older diagrams — 8M0204650 is the correct current part either way.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563842600996,"sku":"29845","price":3.84,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/image-gen-1_20260811-210452_bb09f5cc-2325-4b82-94ae-73e3be23927a.png?v=1786562860"},{"product_id":"merc-108","title":"Mercury MerCruiser Quicksilver Bearing Carrier O-Ring 29976","description":"\u003ch2\u003eMercury MerCruiser Quicksilver Bearing Carrier O-Ring – Part Number 29976\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 29976 | OEM Service Number: 25-29976\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury Marine \/ Quicksilver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Bearing Carrier O-Ring — OEM Replacement Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 745061133778\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperseded By:\u003c\/strong\u003e No current superseding Mercury number identified. 29976 \/ 25-29976 remains active in Mercury parts references.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Lower Unit \/ Gearcase — Propeller Shaft Section\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagram Position:\u003c\/strong\u003e Seated directly ahead of the bearing carrier in the propeller-shaft section of the gear housing; typically 1 required per gearcase assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat This Part Does\u003c\/h2\u003e\n\u003cp\u003eThe bearing carrier O-ring seals the bearing carrier against the gear housing bore, retaining gear lubricant inside the lower unit and blocking water intrusion into the gearcase. It is a one-time-use seal — a fresh O-ring should be installed any time the bearing carrier is removed.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSelected Mercury outboard gear housing assemblies (verify by serial number and current parts diagram)\u003c\/li\u003e\n\u003cli\u003eOlder MerCruiser sterndrive gearcase assemblies (verify by serial number and current parts diagram)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eMercury has used several different bearing carrier O-rings across outboard and sterndrive gearcases. Seals that appear identical are not necessarily interchangeable. Confirm fit using your engine or drive serial number and the factory parts diagram before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAny time the bearing carrier is removed\u003c\/li\u003e\n\u003cli\u003eExisting O-ring is flattened, cracked, hardened, or cut\u003c\/li\u003e\n\u003cli\u003eGear lubricant leaking around the bearing carrier\u003c\/li\u003e\n\u003cli\u003eWater contamination found in gear oil\u003c\/li\u003e\n\u003cli\u003eGearcase resealing or rebuild service\u003c\/li\u003e\n\u003cli\u003ePropeller-shaft or bearing-carrier service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean the O-ring groove and all mating surfaces before installation\u003c\/li\u003e\n\u003cli\u003eInspect the bearing carrier and gear housing for corrosion, scoring, or debris\u003c\/li\u003e\n\u003cli\u003eLightly lubricate the O-ring prior to installation per the applicable Mercury service procedure\u003c\/li\u003e\n\u003cli\u003eDo not twist, stretch, or pinch the O-ring during carrier installation\u003c\/li\u003e\n\u003cli\u003eAfter service, refill with specified gear lubricant and pressure-test the lower unit as required\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAlternate Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMercury 29976\u003c\/li\u003e\n\u003cli\u003eMercury \/ Quicksilver 25-29976\u003c\/li\u003e\n\u003cli\u003eSierra 18-7157 (aftermarket cross-reference)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Parts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/quicksilver-bearing-carrier-key-30281-mercury-mercruiser-oem\"\u003eQuicksilver Bearing Carrier Key 30281 – Mercury MerCruiser OEM\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-mercruiser-alpha-one-gen-ii-bearing-carrier-assembly-14587a7\"\u003eMercury MerCruiser Alpha One Gen II Bearing Carrier Assembly 14587A7\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-mercruiser-bearing-carrier-seal-inside-26-14077\"\u003eMercury MerCruiser Bearing Carrier Seal – Inside, 26-14077\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-mercruiser-bearing-carrier-retaining-ring-35128\"\u003eMercury MerCruiser Bearing Carrier Retaining Ring 35128\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/marine-gaskets-seals-o-rings\"\u003eShop All Marine Gaskets, Seals \u0026amp; O-Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003eThe bearing carrier O-ring is one of the most commonly mixed-up seals in Mercury lower unit service — several O-rings look nearly identical but differ in compound and dimensions. Matching by exact part number (29976 \/ 25-29976) and confirming against your gearcase parts diagram is essential. This part is a standard inclusion in any bearing carrier or propeller-shaft reseal job; ordering a spare is worthwhile if you are doing a full lower unit service.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563842633764,"sku":"29976","price":9.14,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/image-gen-1_20260811-210452_8ed74010-5b62-4335-892d-d03ffe812f4b.png?v=1786563120"},{"product_id":"merc-109","title":"Mercury MerCruiser Quicksilver Water Pump Base O-Ring 8M0204651","description":"\u003ch2\u003eMercury MerCruiser Quicksilver Water Pump Base O-Ring – Part Number 8M0204651\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 8M0204651\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury Marine \/ Quicksilver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Water Pump Base O-Ring — OEM Replacement Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e Mercury 30224 (8M0204651 is the current replacement for 30224)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaced By:\u003c\/strong\u003e No current superseding number identified — 8M0204651 is active in Mercury parts references.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Cooling System — Lower Unit Water Pump Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagram Position:\u003c\/strong\u003e Seats at the water pump base, sealing the base against the gear housing; typically 1 required per applicable assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (30224 specification):\u003c\/strong\u003e Approximately 1.859 in. (47.2 mm) ID × 0.139 in. (3.5 mm) cross-section\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat This Part Does\u003c\/h2\u003e\n\u003cp\u003eThe water pump base O-ring seals the pump base against the gear housing, preventing cooling water leakage around the base and maintaining proper sealing within the lower-unit water pump assembly. It is a one-time-use seal — a fresh O-ring should be installed any time the pump base is disturbed.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSelected Mercury outboard gearcases, including applications using water pump base assembly 812966A7\u003c\/li\u003e\n\u003cli\u003eSelected Mercury outboard gearcases — 45 Jet and 50 HP (earlier 30224 applications; verify against current diagram)\u003c\/li\u003e\n\u003cli\u003eSelected MerCruiser sterndrive gearcase and water pump configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eMercury uses several similar-looking O-rings throughout water pump and gearcase assemblies. Confirm fit using your engine or drive serial number and the factory parts diagram before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAny time the water pump base is removed\u003c\/li\u003e\n\u003cli\u003eExisting O-ring is flattened, cracked, hardened, or cut\u003c\/li\u003e\n\u003cli\u003eLeakage visible around the pump base\u003c\/li\u003e\n\u003cli\u003eLower unit being resealed or rebuilt\u003c\/li\u003e\n\u003cli\u003eWater pump service exposes the original O-ring\u003c\/li\u003e\n\u003cli\u003eCorrosion or debris has compromised the sealing surface\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean the pump base groove and all mating surfaces before installation\u003c\/li\u003e\n\u003cli\u003eRemove old lubricant, corrosion, and debris that could interfere with sealing\u003c\/li\u003e\n\u003cli\u003eLubricate the replacement O-ring only as specified in the applicable Mercury service procedure\u003c\/li\u003e\n\u003cli\u003eInstall without twisting or pinching the seal\u003c\/li\u003e\n\u003cli\u003eDo not reuse the original O-ring after the pump base has been disturbed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAlternate \u0026amp; Superseded Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMercury \/ Quicksilver 8M0204651 (current)\u003c\/li\u003e\n\u003cli\u003eMercury 30224 (superseded by 8M0204651)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Parts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-water-pump-base-to-face-plate-gasket-27-39625\"\u003eMercury Water Pump Base to Face Plate Gasket 27-39625\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-quicksilver-192043-water-pump-base-gasket-6-15-hp-outboard\"\u003eMercury Quicksilver 192043 Water Pump Base Gasket — 6–15 HP Outboard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-quicksilver-19202001-water-pump-plate-gasket-6-8-9-9-hp-outboard\"\u003eMercury Quicksilver 19202001 Water Pump Plate Gasket — 6 \/ 8 \/ 9.9 HP Outboard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-outboard-water-pump-impeller-8-blade-8m0135803\"\u003eMercury Outboard Water Pump Impeller 8-Blade 8M0135803\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-outboard-water-pump-gasket-gear-housing-16160004\"\u003eMercury Outboard Water Pump Gasket — Gear Housing 16160004\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/marine-gaskets-seals-o-rings\"\u003eShop All Marine Gaskets, Seals \u0026amp; O-Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003eThe water pump base location is what makes this O-ring easy to mix up — Mercury uses several seals in the lower unit that are nearly identical in appearance but differ in compound and size. Always match by part number (8M0204651 or the older 30224) and confirm against your gearcase diagram rather than sizing by eye. This is a low-cost seal that is worth including any time you have the water pump apart; replacing it on reassembly is inexpensive insurance against reopening the lower unit for a preventable leak.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563842666532,"sku":"30224","price":5.68,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/image-gen-1_20260811-210452_d1305c41-a259-47e4-bcad-829dc6bde438.png?v=1786562837"},{"product_id":"merc-110","title":"Mercury MerCruiser Quicksilver Driveshaft Slinger Ring 30271 — 8M0214918","description":"\u003ch2\u003eMercury MerCruiser Quicksilver Driveshaft Slinger Ring – 8M0214918 | Replaces 30271\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Part Number:\u003c\/strong\u003e 8M0214918 | OEM Service Number: 25-8M0214918\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e Mercury 25-30271 \/ 30271 (direct replacement — same OEM part under a new number)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaced By:\u003c\/strong\u003e No further superseding number identified — 8M0214918 is active in current Mercury parts references.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury Marine \/ Quicksilver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Driveshaft Slinger Ring — Rubber OEM Seal Component\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Lower Unit \/ Gearcase — Water Pump Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagram Position:\u003c\/strong\u003e Seats on the driveshaft above the water pump housing; deflects water and debris away from the pump housing during operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat This Part Does\u003c\/h2\u003e\n\u003cp\u003eThe driveshaft slinger ring is a small rubber ring that mounts on the driveshaft directly above the water pump housing. Its job is to fling water and debris away from the pump housing area as the driveshaft rotates, protecting the pump assembly from water ingestion and premature wear. It is a one-time-use component — inspect it every time the water pump or lower unit is opened, and replace it if there is any sign of wear.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMercury and Mariner 75, 80, 85, 90, 95XR outboard gearcases\u003c\/li\u003e\n\u003cli\u003eMercury V-135, V-150, V-175, V-200, V-220, V-225 outboard gearcases\u003c\/li\u003e\n\u003cli\u003eMercury Magnum, XR, and jet-drive gearcase assemblies\u003c\/li\u003e\n\u003cli\u003eMercury Racing gearcase applications\u003c\/li\u003e\n\u003cli\u003eSelected older MerCruiser sterndrive gearcase assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eAlways verify fit against your engine or drive serial number and the current Mercury parts diagram before ordering. Applications vary by gearcase configuration and serial range.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eAftermarket Cross-References\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSierra 18-7426\u003c\/li\u003e\n\u003cli\u003eMallory 9-76562\u003c\/li\u003e\n\u003cli\u003eGLM 21330\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRing is missing, hardened, cracked, stretched, or damaged\u003c\/li\u003e\n\u003cli\u003eRing is riding loosely on the shaft\u003c\/li\u003e\n\u003cli\u003eAny time the water pump or lower unit is opened for service\u003c\/li\u003e\n\u003cli\u003eDuring any impeller or pump housing replacement job\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the ring on the driveshaft above the water pump housing in the position shown in the Mercury parts diagram for your gearcase\u003c\/li\u003e\n\u003cli\u003eConfirm the ring is correctly seated and not riding loosely before reassembling the lower unit\u003c\/li\u003e\n\u003cli\u003eFollow the applicable Mercury service manual for your specific gearcase assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAlternate \u0026amp; Superseded Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMercury \/ Quicksilver 8M0214918 (current)\u003c\/li\u003e\n\u003cli\u003eMercury \/ Quicksilver 25-8M0214918 (current OEM service number)\u003c\/li\u003e\n\u003cli\u003eMercury 25-30271 \/ 30271 (superseded by 8M0214918)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Parts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-quicksilver-water-pump-repair-kit-8m0155395-4-60-hp-fourstroke-outboard\"\u003eMercury Quicksilver Water Pump Repair Kit 8M0155395 — 4–60 HP FourStroke Outboard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-outboard-water-pump-impeller-8-blade-8m0135803\"\u003eMercury Outboard Water Pump Impeller 8-Blade 8M0135803\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-quicksilver-water-pump-impeller-19453t-30-60-hp-force-75-hp\"\u003eMercury Quicksilver Water Pump Impeller 19453T — 30–60 HP \u0026amp; Force 75 HP\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-quicksilver-driveshaft-oil-seal-26-804156\"\u003eMercury Quicksilver Driveshaft Oil Seal 26-804156\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-gearcase-driveshaft-oil-seal-26-413651\"\u003eMercury Gearcase Driveshaft Oil Seal 26-413651\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-mariner-driveshaft-sleeve-ring-kit-42461a1\"\u003eMercury Mariner Driveshaft Sleeve Ring Kit 42461A1\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mercury-quicksilver-water-pump-base-o-ring-26722\"\u003eMercury Quicksilver Water Pump Base O-Ring 26722 | 25-26722\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/marine-gaskets-seals-o-rings\"\u003eShop All Marine Gaskets, Seals \u0026amp; O-Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003eThe slinger ring is one of the most commonly skipped parts during a water pump service — it is easy to overlook because it is small, inexpensive, and not always visible on a quick inspection. If you are already in the lower unit for a pump job, it costs almost nothing to swap it at the same time. A worn or missing slinger ring can allow water and debris to work into the pump housing area between services. Always order by the current number (8M0214918) or the older 30271 — both reference the same OEM part.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563842732068,"sku":"30271","price":2.91,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/070e4aa4-a12d-4c10-b183-9555b78fe49f.png?v=1777589690"},{"product_id":"merc-113","title":"Quicksilver O-Ring 30529 – Mercury MerCruiser OEM (5-Pack)","description":"\u003ch2\u003eQuicksilver O-Ring 30529 (5-Pack)\u003c\/h2\u003e\u003cp\u003eO-rings are a one-time-use seal — every time a joint is disassembled, a fresh one should go back in. This 5-pack of genuine OEM O-rings gives you the right quantity for a full service job or keeps spares on hand for the next one. These are precision-molded to the exact compound, durometer, and dimensions specified for Mercury and MerCruiser assemblies — not generic O-rings that happen to be close in size.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: \u003cstrong\u003e30529\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eQuantity: 5-pack\u003c\/li\u003e\n\u003cli\u003eType: O-Ring\u003c\/li\u003e\n\u003cli\u003eMaterial: Marine-grade compound, resistant to fuel, oil, and saltwater\u003c\/li\u003e\n\u003cli\u003eGenuine OEM — not aftermarket\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Applications\u003c\/h2\u003e\u003cp\u003eUse these O-rings wherever the Mercury or MerCruiser parts diagram specifies part number 30529. They appear across multiple engine and drive assemblies to seal fluid passages, housings, and fittings — always verify against your model’s current parts diagram, serial number, and assembly location before ordering.\u003c\/p\u003e\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\u003cp\u003eReplace any time you disassemble a sealed joint and the existing O-ring shows signs of flattening, cracking, hardening, swelling, or surface contamination. Never reuse an O-ring that has been compressed in service — always install a fresh one on reassembly.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eClean mating surfaces thoroughly before installation. Lightly lubricate the O-ring with the appropriate fluid (fuel-safe grease or the system fluid) to ease installation and prevent tearing. Follow the Mercury service manual for orientation and torque specifications on the surrounding hardware.\u003c\/p\u003e\u003ch2\u003eRelated Products\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/gaskets-seals-o-rings\"\u003eMarine Gaskets, Seals \u0026amp; O-Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/fasteners-mounting\"\u003eFasteners \u0026amp; Mounting Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\u003cp\u003eBest used during fuel system, cooling system, or drive service where the parts diagram calls for 30529. The 5-pack format is ideal for full engine or drive rebuilds where multiple O-rings of the same size are replaced in one job, or for keeping a service stock on hand. Always match by part number — O-rings that look identical can differ in compound and will fail prematurely in the wrong application. If your assembly has been repowered or updated, cross-reference the current diagram to confirm this number hasn’t been superseded.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563843158052,"sku":"30529","price":5.16,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/MerCruiserO-RingSeal-Packof5_30529.png?v=1771546468"},{"product_id":"merc-114","title":"Quicksilver O-Ring 30613 \/ 8M0214919 – Mercury MerCruiser OEM (5-Pack)","description":"\u003ch2\u003eQuicksilver O-Ring 30613 \/ 8M0214919 (5-Pack)\u003c\/h2\u003e\u003cp\u003eThis 5-pack of genuine OEM O-rings covers the most practical reality of marine service: O-rings are a one-time-use seal, and having the right quantity on hand means you can complete a full job without waiting on a reorder. These are precision-molded to the exact compound, durometer, and dimensions specified for Mercury and MerCruiser assemblies — not generic O-rings that happen to be close in size. The original part number 30613 has been superseded to 8M0214919; both references are the same current OEM part.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOriginal Part Number: \u003cstrong\u003e30613\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCurrent Part Number: \u003cstrong\u003e8M0214919\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eQuantity: 5-pack\u003c\/li\u003e\n\u003cli\u003eType: O-Ring\u003c\/li\u003e\n\u003cli\u003eMaterial: Marine-grade elastomer, resistant to fuel, oil, and saltwater\u003c\/li\u003e\n\u003cli\u003eGenuine OEM — not aftermarket\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Applications\u003c\/h2\u003e\u003cp\u003eUse these O-rings wherever the Mercury or MerCruiser parts diagram specifies part number 30613 or 8M0214919. They appear across multiple engine and drive assemblies to seal fluid passages, housings, and fittings — always verify against your model’s current parts diagram, serial number, and assembly location before ordering.\u003c\/p\u003e\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\u003cp\u003eReplace any time you disassemble a sealed joint and the existing O-ring shows signs of flattening, cracking, hardening, swelling, or surface contamination. Never reuse an O-ring that has been compressed in service — always install a fresh one on reassembly.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eClean mating surfaces thoroughly before installation. Lightly lubricate the O-ring with the appropriate fluid (fuel-safe grease or the system fluid) to ease installation and prevent tearing. Follow the Mercury service manual for orientation and torque specifications on the surrounding hardware.\u003c\/p\u003e\u003ch2\u003eRelated Products\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/gaskets-seals-o-rings\"\u003eMarine Gaskets, Seals \u0026amp; O-Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/fasteners-mounting\"\u003eFasteners \u0026amp; Mounting Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\u003cp\u003eBest used during engine or drive service where the parts diagram calls for 30613 or 8M0214919. The 5-pack format is ideal for rebuild jobs where multiple O-rings of the same size are replaced in one service, or for keeping a working stock on hand. Always match by part number — O-rings that look identical can differ in compound and will fail prematurely in the wrong application. If you’re searching by the original number (30613), the current OEM replacement is 8M0214919 — both will get you the same part.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563843190820,"sku":"30613","price":2.57,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/30613.png?v=1771541576"},{"product_id":"merc-115","title":"Mercury MerCruiser Bushing Assembly 8M0112749","description":"\u003cp\u003eMercury MerCruiser Quicksilver 8M0112749 is a genuine OEM \u003cstrong\u003ebushing assembly\u003c\/strong\u003e. Current Mercury dealer references identify it simply as \u003cstrong\u003eBushing Assembly\u003c\/strong\u003e, and current supersession records show it replacing older OEM numbers \u003cstrong\u003e30617A2\u003c\/strong\u003e and \u003cstrong\u003e30617A1\u003c\/strong\u003e. One current dealer listing also notes that the part \u003cstrong\u003eincludes an oil seal\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury Marine OEM part number \u003cstrong\u003e8M0112749\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent supersession references connect it to older part numbers \u003cstrong\u003e30617A2\u003c\/strong\u003e and \u003cstrong\u003e30617A1\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent dealer listing notes \u003cstrong\u003eincludes oil seal\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent dealer listing shows \u003cstrong\u003eGTIN 745061134508\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eCurrent shipping-spec listing shows approximate packaged size of \u003cstrong\u003e1.38 x 1.38 x 0.88 in\u003c\/strong\u003e and weight of \u003cstrong\u003e0.08 lb\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe strongest supportable fitment for 8M0112749 is older Mercury MerCruiser sterndrive and engine applications carried forward from superseded part \u003cstrong\u003e30617A2\u003c\/strong\u003e. Current where-used references for that superseded part show coverage across older MerCruiser engine families including \u003cstrong\u003e120\/140, 160, 165, 228, 233, 250, 260, 470, 485, 888, and 898\u003c\/strong\u003e, plus \u003cstrong\u003eR\/MR\/Alpha One sterndrive\u003c\/strong\u003e, \u003cstrong\u003eR\/MR\/Alpha One transom assembly\u003c\/strong\u003e, \u003cstrong\u003eAlpha One SS\u003c\/strong\u003e, and \u003cstrong\u003eSSM II\/III\/IV\/V\u003c\/strong\u003e applications. The safest match is by exact serial-number-based parts diagram rather than by engine family name alone.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eVerify fitment by exact \u003cstrong\u003eengine or drive serial number\u003c\/strong\u003e and the correct parts diagram before ordering. With 8M0112749, the safest match is the precise assembly callout because the current active SKU is broad while the superseded where-used history spans many older MerCruiser engine and stern drive platforms.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis bushing assembly is typically replaced when the original bushing is worn, loose, leaking at the seal, or damaged during teardown. Because one current dealer listing confirms the assembly includes an oil seal, renewing the complete assembly during related service is often the better move than reusing an aged sealing surface. This service guidance is a practical inference supported by the SKU’s assembly-level description and included seal note.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInstall 8M0112749 only after confirming the correct Mercury MerCruiser parts diagram for the engine, drive, or transom assembly being serviced. Current supersession references show this active number replacing an older part used across multiple MerCruiser platforms, so diagram-level confirmation is the right approach before disassembly or reassembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCurrent sources connect \u003cstrong\u003e30617A2\u003c\/strong\u003e and \u003cstrong\u003e30617A1\u003c\/strong\u003e to active Mercury part number \u003cstrong\u003e8M0112749\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWith an assembly part like this, the exact diagram position matters more than the generic name. Matching \u003cstrong\u003e8M0112749\u003c\/strong\u003e by serial number is the safer move, especially since the active SKU replaces older MerCruiser numbers used across a wide range of legacy engine and stern drive applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563843223588,"sku":"30617A2","price":38.3,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/c1a89b29-7f0e-4ee8-96d4-3466287419e8.png?v=1776813848"},{"product_id":"merc-118","title":"Quicksilver Needle Roller Bearing 30956T – Mercury MerCruiser OEM","description":"\u003ch2\u003eQuicksilver Needle Roller Bearing 30956T (31-30956T)\u003c\/h2\u003e\u003cp\u003eNeedle roller bearings do a quiet but critical job inside the lower unit — they support rotating shafts under load and keep friction low inside the gear housing. When one fails, you’ll typically hear it first: a whine, rumble, or roughness that gets worse under load. This is the genuine OEM bearing specified for compatible Mercury and MerCruiser lower-unit assemblies, engineered to the correct dimensions and load rating for the application.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: \u003cstrong\u003e30956T\u003c\/strong\u003e (OEM ref: 31-30956T)\u003c\/li\u003e\n\u003cli\u003eType: Needle Roller Bearing\u003c\/li\u003e\n\u003cli\u003eLocation: Lower-unit gearcase\u003c\/li\u003e\n\u003cli\u003eGTIN\/UPC: 745061134867\u003c\/li\u003e\n\u003cli\u003eGenuine OEM — not aftermarket\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\u003cp\u003eUsed on select Mercury and Mariner outboards including 45 Jet, 50, 55, 60, and mid-to-high horsepower models from 65 through 175 HP, as well as select MerCruiser Alpha One Generation II lower-unit drive assemblies. Always verify against your engine or drive’s current parts diagram and serial number before ordering — gearcase bearings can vary by shaft size, bearing location, housing style, and production range.\u003c\/p\u003e\u003ch2\u003eAftermarket Cross-References\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSierra Marine 18-1158\u003c\/li\u003e\n\u003cli\u003eSEI Marine 93-102-12\u003c\/li\u003e\n\u003cli\u003eGLM 11410\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\u003cp\u003eReplace if the bearing is worn, noisy, pitted, scored, seized, loose in the housing, or contaminated by water intrusion. Inspect during any lower-unit service involving gears, the propeller shaft, driveshaft, seals, or bearing carrier.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eInstallation requires lower-unit disassembly and proper bearing removal and installation tools. Inspect the shaft surface, gear housing bore, seals, gears, and lubricant condition during service. Replace any related worn components and refill the gearcase with the correct lubricant after reassembly, following the Mercury service manual for your specific lower unit.\u003c\/p\u003e\u003ch2\u003eRelated Products\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/gaskets-seals-o-rings\"\u003eMarine Gaskets, Seals \u0026amp; O-Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/fasteners-mounting\"\u003eFasteners \u0026amp; Mounting Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\u003cp\u003eBest used as a direct OEM replacement during lower-unit rebuilds or gearcase service on compatible Mercury and MerCruiser applications. Lower-unit bearings are not parts to match by appearance alone — even a small difference in bearing size or gearcase location can affect shaft alignment, noise, and gear life. Match by serial number and lower-unit diagram first. If you’re already in the lower unit for a seal or bearing carrier job, it’s worth inspecting this bearing at the same time — the labour to get back in is the same either way.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563851153444,"sku":"30956T","price":28.67,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/67082655-04ca-44fb-ad39-385e3cc681aa.png?v=1779392216"},{"product_id":"merc-125","title":"Mercury MerCruiser Quicksilver O-Ring 25-31986","description":"\u003ch2\u003eOEM O-Ring for Mercury \u0026amp; MerCruiser Assemblies\u003c\/h2\u003e\u003cp\u003eThis genuine Quicksilver O-Ring is a broad-use sealing ring found across a wide range of Mercury outboard and MerCruiser sterndrive assemblies. At \u003cstrong\u003e2.635 in. (67 mm) I.D. × 0.210 in. (5.3 mm) width\u003c\/strong\u003e, it’s a precision-fit seal designed to hold up in the demanding conditions of a marine environment. When an O-ring fails, even a small leak can lead to bigger problems — this is the correct OEM replacement to restore a proper, pressure-tight seal.\u003c\/p\u003e\u003ch2\u003eKey Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: \u003cstrong\u003e25-31986\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBase Reference: \u003cstrong\u003e31986\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eType: O-Ring\u003c\/li\u003e\n\u003cli\u003eDimensions: 2.635 in. \/ 67 mm I.D. × 0.210 in. \/ 5.3 mm width\u003c\/li\u003e\n\u003cli\u003eGTIN \/ UPC: 745061135390\u003c\/li\u003e\n\u003cli\u003eGenuine OEM — not aftermarket\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Applications\u003c\/h2\u003e\u003cp\u003eThis O-ring appears across many Mercury and Mariner outboard families including select \u003cstrong\u003e35, 40, 45, 50, 60, 65, and 70 HP\u003c\/strong\u003e models, as well as older MerCruiser sterndrive applications including \u003cstrong\u003e“0” sterndrive (1965–1966)\u003c\/strong\u003e and \u003cstrong\u003e60 Renault 68 I\/L4 (1965–1968)\u003c\/strong\u003e. Always verify compatibility using your engine’s model number, serial number, and the exact Mercury parts diagram before ordering — this part appears across many different assemblies and locations.\u003c\/p\u003e\u003ch2\u003eCross-Reference Part Numbers\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMercury \/ Quicksilver: \u003cstrong\u003e25-31986\u003c\/strong\u003e, 31986\u003c\/li\u003e\n\u003cli\u003eSierra: 18-7160\u003c\/li\u003e\n\u003cli\u003eGLM: 83340\u003c\/li\u003e\n\u003cli\u003eMallory: 9-76545\u003c\/li\u003e\n\u003cli\u003eVolvo Penta: 3852866 (related cross-reference)\u003c\/li\u003e\n\u003cli\u003eOMC \/ Johnson \/ Evinrude: 0508490, 0913850, 3852866 (related cross-reference)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\u003cp\u003eReplace this O-ring whenever the related assembly is opened, or if the original seal is flattened, brittle, swollen, cracked, or no longer sealing properly. Reusing a compressed or damaged O-ring risks repeat leaks.\u003c\/p\u003e\u003ch2\u003eInstallation Tips\u003c\/h2\u003e\u003cp\u003eClean the O-ring groove and mating surface before installation. Lightly lubricate with the service-manual-approved lubricant where specified, and ensure the O-ring seats evenly without twisting, stretching, or rolling during assembly.\u003c\/p\u003e\u003ch2\u003eRelated Hardware\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/mercury-mercruiser-quicksilver-gaskets-seals\"\u003eMercury MerCruiser \/ Quicksilver Gaskets \u0026amp; Seals\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/marine-gaskets-seals-o-rings\"\u003eMarine Gaskets, Seals \u0026amp; O-Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e Direct OEM replacement when the Mercury parts diagram calls for 25-31986 at a specific assembly location. Because this is a broad-use O-ring that appears across many engine families and locations, the safest match is the exact diagram callout — not horsepower alone. The physical dimensions (67 mm I.D.) can help confirm the part, but serial number and diagram location are the most reliable way to avoid ordering the wrong seal. Cross-reference numbers like Sierra 18-7160 and GLM 83340 are widely stocked alternatives if the OEM part is unavailable.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563851513892,"sku":"31986","price":6.87,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/1d907019-2264-4e71-8f1e-0f1deba19460.png?v=1777590625"},{"product_id":"mercury-mercruiser-quicksilver-o-ring-25-32068","title":"Mercury MerCruiser Quicksilver O-Ring 25-32068 (4.109 x .139)","description":"\u003ch2\u003eGenuine Mercury O-Ring — 4.109\" x .139\" Cross-Section\u003c\/h2\u003e\u003cp\u003eThis is the genuine OEM O-ring used throughout Mercury MerCruiser and Quicksilver engine and drive assemblies wherever a 4.109\" ID x .139\" cross-section seal is specified. Manufactured to factory tolerances, it restores a leak-free seal during resealing work, overhaul, or any service that disturbs the original seating surface.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: \u003cstrong\u003e25-32068\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: 4.109\" ID × .139\" cross-section\u003c\/li\u003e\n\u003cli\u003eGenuine OEM — not aftermarket\u003c\/li\u003e\n\u003cli\u003eCompatible with Mercury, MerCruiser, and Quicksilver assemblies calling for this part number\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFitment\u003c\/h2\u003e\u003cp\u003eMatch this part to your Mercury parts diagram using your engine model, serial number, and assembly location. Similar seals across Mercury product lines can vary by production range — always confirm the part number before ordering.\u003c\/p\u003e\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\u003cp\u003eReplace during any disassembly, resealing, or overhaul where the existing O-ring shows signs of crushing, hardening, tearing, flattening, or contamination — or any time the seating surface is disturbed.\u003c\/p\u003e\u003ch2\u003eInstallation\u003c\/h2\u003e\u003cp\u003eClean mating surfaces thoroughly before installation. Replace any related seals or gaskets disturbed during disassembly. Follow the Mercury service manual for correct orientation, lubrication, and torque specifications.\u003c\/p\u003e\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This O-ring is most commonly needed during water pump housing service, thermostat housing reseals, and drive unit overhauls on MerCruiser stern drives and inboard engines. Always order by the diagram part number first — this is especially important on repowered boats or assemblies that may have been updated under a superseded number. If your diagram shows 32068 or 25-32068, this is the correct part.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563851546660,"sku":"32068","price":14.54,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/23a8f7f0-159f-4203-9199-bfc648257990.png?v=1786482425"},{"product_id":"merc-127","title":"Mercury MerCruiser Quicksilver O-Ring 25-32069","description":"\u003ch2\u003eOEM O-Ring for Mercury \u0026amp; MerCruiser Assemblies\u003c\/h2\u003e\u003cp\u003eKeep your Mercury or MerCruiser engine sealed and running right with this factory OEM O-Ring. Designed to exact tolerances for Mercury Marine applications, this small but critical seal prevents fluid leaks at joints, fittings, and assemblies throughout the engine and drive system. When a seal fails, even a minor leak can escalate — this is the correct replacement to restore a proper, pressure-tight fit.\u003c\/p\u003e\u003ch2\u003eKey Details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: \u003cstrong\u003e25-32069\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eType: O-Ring\u003c\/li\u003e\n\u003cli\u003eGenuine OEM — not aftermarket\u003c\/li\u003e\n\u003cli\u003eFits Mercury, MerCruiser, and Quicksilver applications where this part number is specified\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon Applications\u003c\/h2\u003e\u003cp\u003eMatch this part to your engine's model number, serial number, and parts diagram before ordering. Mercury seals and O-rings can vary by production year and assembly location — always verify the diagram calls for \u003cstrong\u003e25-32069\u003c\/strong\u003e at your specific location. Commonly used during water pump service, thermostat housing work, and drive unit resealing.\u003c\/p\u003e\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\u003cp\u003eReplace during any disassembly or resealing work, or whenever the existing O-ring shows signs of crushing, hardening, tearing, flattening, or contamination. A compromised seal will not hold pressure.\u003c\/p\u003e\u003ch2\u003eInstallation Tips\u003c\/h2\u003e\u003cp\u003eClean mating surfaces thoroughly before installation. Replace any related seals or gaskets disturbed during disassembly. Refer to your Mercury service manual for correct orientation, lubrication, and torque specifications.\u003c\/p\u003e\u003ch2\u003eRelated Hardware\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/mercury-mercruiser-quicksilver-gaskets-seals\"\u003eMercury MerCruiser \/ Quicksilver Gaskets \u0026amp; Seals\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/marine-gaskets-seals-o-rings\"\u003eMarine Gaskets, Seals \u0026amp; O-Rings\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e Direct OEM replacement when the Mercury parts diagram calls for 25-32069 at a specific fitting, housing, or assembly location. O-rings are one of the most commonly mis-ordered parts — always order by the number shown in the diagram, not by size or appearance alone. If you're working on a repowered boat or an assembly that's been updated, the diagram may reference a superseded number; confirm this listing matches before ordering.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563851579428,"sku":"32069","price":7.85,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/image-gen-1_20260811-210452_6e4f8edd-c1e2-4891-b26f-5ff1a2c082de.png?v=1786563136"},{"product_id":"merc-132","title":"Mercury - Drive Shaft Housing Oil Seal - 26-32511","description":"\u003cp\u003eThe Mercury Quicksilver Drive Shaft Housing Oil Seal 26-32511 is an OEM upper gearcase oil seal for select MerCruiser sterndrive applications. It installs in the drive shaft housing area to help keep gear lubricant sealed inside the upper gear housing while helping prevent water intrusion.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury\/Quicksilver oil seal\u003c\/li\u003e\n\u003cli\u003ePart number: 26-32511\u003c\/li\u003e\n\u003cli\u003eAlso referenced as 32511\u003c\/li\u003e\n\u003cli\u003eUpper gear housing driven gear oil seal\u003c\/li\u003e\n\u003cli\u003eOD: 2.005\"\u003c\/li\u003e\n\u003cli\u003eID \/ shaft size: 1.250\"\u003c\/li\u003e\n\u003cli\u003eWidth: 0.388\"\u003c\/li\u003e\n\u003cli\u003eGTIN \/ UPC: 745061078390\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eDrive Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUsed on select legacy MerCruiser #1, MR, and Alpha One Generation 1 sterndrive configurations, commonly spanning 1963–1991 applications. Associated applications include MerCruiser 120, 140, 160, 165, 470, 485, 225-S, 228, 233, 250, 260, 888, and 898 models.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eVerify fitment by drive serial number, upper gear housing diagram, and original seal part number before ordering. Seal fitment can vary by drive generation, gear housing style, shaft size, and production range.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this oil seal if gear lube is leaking, water is entering the drive, the seal lip is worn or hardened, or the seal is disturbed during upper gear housing service.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInspect the shaft sealing surface before installation. Replace any grooved, corroded, or damaged mating surfaces that could cause repeat leaks. Install the seal squarely with the proper driver and pressure-test the drive after service.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePrimary Mercury references: 26-32511 and 32511. Common aftermarket interchange: Sierra Marine 18-2049.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA gearcase seal failure can quickly turn into water-contaminated gear oil, bearing damage, or upper drive wear. Matching the seal by drive diagram and dimensions is the safest way to avoid repeat leakage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563851743268,"sku":"32511","price":36.14,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/76d8b922-f612-4aca-b65f-c86ddac3c5f6.png?v=1779393139"},{"product_id":"merc-133","title":"Mercury - Upper Gearcase Seal Kit - 26-32511A1","description":"\u003cp\u003eThe Mercury Quicksilver Upper Gearcase Seal Kit 26-32511A1 is an OEM-style reseal kit for select legacy MerCruiser upper outdrive assemblies. This kit includes the seals, O-rings, and gaskets commonly required to reseal the drive shaft housing during upper gearcase service, pressure-leak repair, or full teardown maintenance.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMercury\/Quicksilver upper gearcase seal kit\u003c\/li\u003e\n\u003cli\u003ePart number: 26-32511A1\u003c\/li\u003e\n\u003cli\u003eAlso referenced as 32511A1\u003c\/li\u003e\n\u003cli\u003eDesigned for upper outdrive \/ drive shaft housing reseal service\u003c\/li\u003e\n\u003cli\u003eIncludes oil seals, O-rings, and related gaskets\u003c\/li\u003e\n\u003cli\u003eHelps correct gear lube leaks and pressure-test failures in the upper gear housing\u003c\/li\u003e\n\u003cli\u003eCommonly includes components such as 26-32511, 26-823894, 26-965031, 25-32546, 25-70937, 25-55801, and 12-19183\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eDrive Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFits select legacy MerCruiser #1, MR, and Alpha One Generation 1 sterndrives, commonly used from 1963 through 1990\/1991 applications. Fits MerCruiser #1 \/ MR \/ Alpha configurations with serial number 1684188 and up, and 888 stern drive models from serial number 3106717 and up.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eVerify fitment by drive serial number and upper gear housing diagram before ordering. This kit is for legacy MerCruiser #1, MR, and Alpha One Gen 1 style drives and does \u003cstrong\u003enot\u003c\/strong\u003e fit Alpha One Generation II drives.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUse this kit when resealing the upper gearcase, repairing a pressure or vacuum leak, replacing worn oil seals, servicing water-contaminated gear lube, or rebuilding the upper drive housing during teardown.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUpper gearcase reseal work requires proper disassembly, seal removal tools, correct seal drivers, and pressure\/vacuum testing after reassembly. Inspect shafts, sealing surfaces, bearing condition, top cover surfaces, and drain\/fill screw gaskets during service. Replace any grooved or corroded mating surfaces before final assembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePrimary Mercury references: 26-32511A1 and 32511A1. Common aftermarket interchanges include Sierra Marine 18-2648, GLM Marine 87500, and Mallory Marine 9-74303.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is the right style of kit when the upper drive needs a complete reseal instead of replacing one seal at a time. The key detail is drive generation: Alpha One Gen 1 and Alpha One Gen II use different sealing layouts, so checking the drive serial number before ordering prevents an expensive mismatch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563851776036,"sku":"32511A1","price":116.24,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/9f0cdc9b-7619-476f-be9d-6b2da9a9d276.png?v=1779393490"},{"product_id":"merc-144","title":"Mercury MerCruiser Quicksilver Upper Swivel Shaft Washer (.063) – Part 32997","description":"\u003ch2\u003eUpper Swivel Shaft Washer (.063) for Mercury MerCruiser Outdrives\u003c\/h2\u003e\u003cp\u003eThis precision-cut washer seats against the upper swivel shaft in Mercury MerCruiser sterndrive assemblies, maintaining proper spacing and sealing integrity at the swivel joint. At .063\" thickness, it provides the exact dimensional fit required by the Mercury parts diagram — making it a critical component during any swivel shaft service, outdrive reseal, or steering system rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e This part number (32997) is listed in Mercury catalog data as discontinued. Old-stock or aftermarket equivalents may be available — verify current availability before ordering.\u003c\/p\u003e\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMercury MerCruiser sterndrive assemblies requiring upper swivel shaft service\u003c\/li\u003e\n\u003cli\u003eOutdrive resealing and swivel shaft replacement procedures\u003c\/li\u003e\n\u003cli\u003eSteering system rebuilds where swivel shaft hardware is disturbed\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\u003cp\u003eReplace this washer any time the swivel shaft is removed, during outdrive resealing work, or if the existing washer shows signs of deformation, corrosion, or dimensional wear. Reusing a crushed or flattened washer can compromise the sealing stack and lead to premature failure.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eClean mating surfaces thoroughly before installation. Replace all seals and gaskets disturbed during disassembly. Follow the Mercury service manual for correct orientation, torque sequence, and lubrication specifications.\u003c\/p\u003e\u003ch2\u003eAlternate \u0026amp; Superseded Part Numbers\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMercury-Mercruiser: \u003cstrong\u003e12-32997\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eShort reference: \u003cstrong\u003e32997\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This washer is the right call during any upper swivel shaft service on a MerCruiser sterndrive — particularly during a full outdrive reseal or when replacing swivel shaft bearings. Because it's a discontinued number, cross-reference the current Mercury parts diagram by model and serial number to confirm whether a superseded replacement is available. On repowered boats or assemblies updated under a new part number, the diagram is the most reliable source.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563852922916,"sku":"32997","price":4.74,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/416c5da0-122d-4c2b-8c62-4420281d0a05.png?v=1787256134"},{"product_id":"merc-161","title":"Mercury MerCruiser Distributor Base Gasket 27-344863","description":"\u003ch2\u003eMercury MerCruiser Distributor Base Gasket — Part No. 27-344863\u003c\/h2\u003e\n\u003cp\u003eThis is the genuine Mercury Marine OEM distributor base gasket for compatible MerCruiser GM-based marine engines. It seals the distributor mounting base to the engine block, keeping oil vapor, moisture, and debris out of the distributor cavity while supporting a clean, stable ignition-system installation. A small part that matters every time the distributor comes out.\u003c\/p\u003e\n\n\u003ch2\u003ePart Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 27-344863\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Number:\u003c\/strong\u003e 344863\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Distributor Base Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate Dimensions:\u003c\/strong\u003e 1.78\" L x 1.78\" W x 0.25\" H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate Weight:\u003c\/strong\u003e 0.02 lb (9 g)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC \/ GTIN:\u003c\/strong\u003e 745061137288\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAftermarket Interchange:\u003c\/strong\u003e Sierra Marine 18-0874\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Genuine Mercury Marine OEM replacement gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMerCruiser 3.7L \/ 224 inline-4 — conventional distributor applications, per diagram\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3L V6 — distributor base locations, per diagram\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.0L small-block V8 — per diagram\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.7L \/ 350 small-block V8 — per diagram\u003c\/li\u003e\n\u003cli\u003eMerCruiser 7.4L big-block V8 — per diagram\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eConfirm fitment by engine serial number, distributor style, and parts diagram before ordering. Distributor gasket fitment can vary by engine family, ignition system, block design, and production range.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eAlternate \u0026amp; Superseded Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-344863\u003c\/strong\u003e — current Mercury\/MerCruiser formatted number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e344863\u003c\/strong\u003e — base part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSierra Marine 18-0874\u003c\/strong\u003e — aftermarket interchange reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Parts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131419668516\"\u003eMercury Distributor Cap \u0026amp; Rotor Kit – 811635Q2\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131420291108\"\u003eMercury Distributor Cap \u0026amp; Rotor Kit – 815407T5\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/11141361860644\"\u003eArco DR002 Distributor Rotor — MerCruiser \/ Volvo Penta MPI\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131645079588\"\u003eSierra Distributor Rotor – SIE-18-5403\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cp\u003eReplace this gasket any time the distributor is removed for service — it should never be reused once disturbed. It is also commonly replaced during tune-ups, ignition system overhauls, and any top-end service where the distributor is pulled. Given the low cost, replacing it as a matter of course during distributor service is standard practice.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cp\u003eReplace if the original gasket is torn, compressed flat, oil-soaked, brittle, cracked, or leaking. Also replace if the distributor has been removed for any reason — a reused gasket may not seal correctly after being disturbed.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMark the distributor position (rotor direction and housing orientation) before removal to preserve ignition timing\u003c\/li\u003e\n\u003cli\u003eClean the distributor base and engine block sealing surfaces before fitting the new gasket\u003c\/li\u003e\n\u003cli\u003eDo not use sealant on this gasket unless specifically called for in the service manual\u003c\/li\u003e\n\u003cli\u003eConfirm ignition timing per Mercury service specifications after reassembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to retime the engine after replacing this gasket?\u003c\/strong\u003e\u003cbr\u003eA: If you mark the distributor position carefully before removal and reinstall it in the same orientation, timing should be preserved. However, verifying timing with a timing light after reassembly is always recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse the original gasket if it looks okay?\u003c\/strong\u003e\u003cbr\u003eA: Not recommended. Once compressed and disturbed, the original gasket may not seal reliably. At under $4, replacing it is the right call every time the distributor comes out.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will the Sierra 18-0874 fit the same applications?\u003c\/strong\u003e\u003cbr\u003eA: Sierra 18-0874 is a listed aftermarket interchange for this gasket. For OEM fitment confidence, the Mercury 27-344863 is the factory-specified part.\u003c\/p\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This gasket is the right add-to-cart item any time a customer is ordering a distributor cap, rotor, or ignition tune-up kit for a GM-based MerCruiser. It’s inexpensive, often overlooked, and almost always needs replacing when the distributor comes off. Bundling it with a cap and rotor kit is the smart move.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon mistakes:\u003c\/strong\u003e The most frequent error is assuming the old gasket can be reused because it “still looks fine.” A gasket that has been compressed and disturbed may not seal correctly on reinstallation, leading to oil seepage or moisture ingress at the distributor base. The other common mistake is not marking the distributor position before removal, which turns a simple gasket swap into a full ignition timing job.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563854135332,"sku":"344863","price":3.97,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/0fb5caff-ddcb-4151-a62c-a51262be4743.png?v=1779597499"},{"product_id":"merc-167","title":"Mercury MerCruiser O-Ring 25-34821 | OEM Sealing Ring","description":"\u003ch2\u003eMercury MerCruiser O-Ring — Part No. 25-34821\u003c\/h2\u003e\n\u003cp\u003eThis is the genuine Mercury Marine OEM O-ring listed under part number \u003cstrong\u003e25-34821\u003c\/strong\u003e (base number \u003cstrong\u003e34821\u003c\/strong\u003e). O-rings in the Mercury and MerCruiser lineup are application-specific — they are sized and compounded for the exact sealing location called out in the parts diagram. When the diagram specifies 25-34821, this is the correct OEM replacement, not a generic substitute.\u003c\/p\u003e\n\n\u003ch2\u003ePart Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 25-34821\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Number:\u003c\/strong\u003e 34821\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e O-Ring (OEM sealing ring)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury Marine OEM\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUse where the Mercury, MerCruiser, or Quicksilver parts diagram specifically calls for part number 25-34821 or 34821\u003c\/li\u003e\n\u003cli\u003eConfirm fitment by engine or drive serial number, assembly location, and current Mercury parts diagram before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eO-ring fitment must be confirmed by part number and diagram position. Similar-looking O-rings vary in inside diameter, cross-section, and compound — do not substitute by size alone.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eAlternate \u0026amp; Superseded Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-34821\u003c\/strong\u003e — current Mercury\/MerCruiser formatted number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e34821\u003c\/strong\u003e — base part number\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cp\u003eReplace this O-ring any time the assembly it seals is disassembled for service. O-rings that have been compressed, heat-cycled, or exposed to fuel or oil should never be reused — even if they appear undamaged. Replace as a matter of course during any service that disturbs the sealing location.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean the O-ring groove and mating surface before installation — debris or corrosion in the groove will prevent a proper seal\u003c\/li\u003e\n\u003cli\u003eLightly lubricate the O-ring with the appropriate Mercury-approved lubricant before installation to prevent tearing during assembly\u003c\/li\u003e\n\u003cli\u003eDo not stretch or twist the O-ring during installation\u003c\/li\u003e\n\u003cli\u003eConfirm the O-ring is fully seated in the groove before assembling the mating components\u003c\/li\u003e\n\u003cli\u003eFollow the Mercury service manual torque and assembly sequence for the specific location\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I substitute a generic O-ring of the same size?\u003c\/strong\u003e\u003cbr\u003eA: Not recommended. Mercury OEM O-rings are compounded for compatibility with the specific fluids, temperatures, and pressures at the sealing location. A generic substitute may swell, harden, or degrade faster in marine applications, leading to leaks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I find the right O-ring for my engine or drive?\u003c\/strong\u003e\u003cbr\u003eA: Look up your engine or drive serial number in the Mercury parts diagram and confirm the diagram calls for 25-34821 at the specific assembly location you are servicing. If you’re unsure, our parts team can help verify before you order.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I replace all O-rings in an assembly at once?\u003c\/strong\u003e\u003cbr\u003eA: Yes, when practical. If one O-ring in an assembly has failed or been disturbed, replacing all O-rings in that assembly during the same service visit is good practice — it avoids a repeat teardown if another seal fails shortly after.\u003c\/p\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This O-ring is the right call when the parts diagram specifically calls for 25-34821 and an OEM-quality seal is needed at that location. It’s a low-cost part that belongs in any service order where the assembly is being opened — ordering it ahead of teardown avoids delays waiting for a seal to arrive mid-job.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon issues:\u003c\/strong\u003e The most frequent problem is customers ordering by size rather than part number, then discovering the compound or cross-section doesn’t match the original. Always order by the number in the diagram. The second common issue is reusing the original O-ring after disassembly — a seal that has been compressed and heat-cycled may look fine but will often leak on reassembly.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563854331940,"sku":"34821","price":11.84,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/images-2026-08-20T132720.864_728bf168-cf5a-4e64-a81d-e0bf58ea0c63.jpg?v=1787264471"},{"product_id":"merc-169","title":"Mercury MerCruiser Seawater Pump Gasket 27-34897 — Pack of 2","description":"\u003ch2\u003eMercury MerCruiser Seawater Pump Gasket — Part No. 27-34897 | Pack of 2\u003c\/h2\u003e\n\u003cp\u003eThis listing is for a \u003cstrong\u003epack of 2\u003c\/strong\u003e genuine Mercury Marine OEM seawater pump gaskets, part number \u003cstrong\u003e27-34897\u003c\/strong\u003e (base number \u003cstrong\u003e34897\u003c\/strong\u003e). This gasket seals the seawater pump housing to the engine mounting surface on compatible GM-based MerCruiser V6 and V8 engines, preventing cooling-water leaks at the pump and supporting proper raw-water flow through the cooling system. Having two on hand is practical — one for the current service and one for the next, or as a spare if the first is damaged during installation.\u003c\/p\u003e\n\n\u003ch2\u003ePart Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 27-34897\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Number:\u003c\/strong\u003e 34897\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 2 gaskets per listing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Seawater Pump Housing Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Raw-water (seawater) cooling circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Genuine Mercury Marine OEM replacement gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMerCruiser 4.3L V6 — GM-based, seawater pump housing location per diagram\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.0L \/ 305 CID V8 — per diagram\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.7L \/ 350 CID V8 — per diagram\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6.2L \/ 377 CID V8 — per diagram\u003c\/li\u003e\n\u003cli\u003eMerCruiser 350 MAG — per diagram\u003c\/li\u003e\n\u003cli\u003eMerCruiser 300 Tempest — per diagram\u003c\/li\u003e\n\u003cli\u003eMerCruiser 320 EFI — per diagram\u003c\/li\u003e\n\u003cli\u003eMerCruiser 280 TRS — per diagram\u003c\/li\u003e\n\u003cli\u003eSelect MerCruiser ski engine configurations — where diagram specifies 27-34897\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eConfirm fitment by engine serial number, seawater pump style, and parts diagram before ordering. Pump gasket fitment can vary by engine block, pump housing design, cooling-system layout, and production range.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eAlternate, Superseded \u0026amp; Interchange Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-34897\u003c\/strong\u003e — current Mercury\/MerCruiser formatted number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e34897\u003c\/strong\u003e — base part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2734897\u003c\/strong\u003e — alternate Mercury reference format\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBRP \/ OMC 3852477\u003c\/strong\u003e — OEM cross-reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSierra Marine 18-0891\u003c\/strong\u003e — aftermarket interchange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMallory Marine 9-61600\u003c\/strong\u003e — aftermarket interchange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGLM Products 31380\u003c\/strong\u003e — aftermarket interchange\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Parts\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131442540580\"\u003eMercury MerCruiser Seawater Pump Kit Without Air Fittings 8M0139995\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131442081828\"\u003eMercury MerCruiser Seawater Pump Impeller Kit 8M0137219\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131418587172\"\u003eMercury MerCruiser Body\/Impeller Kit 807151A14\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131440410660\"\u003eMercury MerCruiser Impeller Kit 8M0104229\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cp\u003eReplace this gasket every time the seawater pump is removed for service. Gaskets that have been compressed and heat-cycled should never be reused — even if they appear undamaged. The seawater pump impeller is typically serviced annually or every 100 hours; replacing the pump gasket at the same time adds no meaningful cost and eliminates the risk of a leak after reassembly.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cp\u003eReplace if the gasket is torn, compressed flat, leaking, brittle, cracked, or damaged during pump removal. Also replace any time the seawater pump is removed for impeller service, pump replacement, or cooling-system diagnosis — do not reinstall a used gasket.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean the pump housing and engine mounting surfaces thoroughly before fitting the new gasket — old gasket material left on the surface will cause leaks\u003c\/li\u003e\n\u003cli\u003eDo not use sealant on this gasket unless specifically called for in the Mercury service manual for the application\u003c\/li\u003e\n\u003cli\u003eInspect the pump housing, impeller, pulley alignment, and surrounding hoses while the pump is off\u003c\/li\u003e\n\u003cli\u003eTorque the pump mounting fasteners to the Mercury service specification — over-tightening can crush the gasket and cause leaks\u003c\/li\u003e\n\u003cli\u003eRun the engine and check for leaks at the pump mounting surface after reassembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why does this listing include 2 gaskets?\u003c\/strong\u003e\u003cbr\u003eA: Having a spare on hand is practical for seawater pump service. If the first gasket is damaged during installation, or if you service multiple engines, the second gasket is ready without a separate order. It also makes sense to keep one in the spares kit for the next annual service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use a Sierra 18-0891 or GLM 31380 instead?\u003c\/strong\u003e\u003cbr\u003eA: Sierra 18-0891, Mallory 9-61600, and GLM 31380 are listed aftermarket interchanges for this gasket. For OEM fitment confidence, the Mercury 27-34897 is the factory-specified part.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to replace the gasket if the pump isn’t leaking?\u003c\/strong\u003e\u003cbr\u003eA: Yes, if the pump has been removed. A gasket that has been disturbed may not reseal reliably. At this price point, replacing it is always the right call when the pump is already off.\u003c\/p\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This gasket is the right add-to-cart item any time a customer is ordering a seawater pump impeller kit, pump body kit, or full pump assembly for a GM-based MerCruiser V6 or V8. It should be replaced every time the pump comes off, and the pack-of-2 format makes it easy to keep a spare on hand for the next service. Pairing it with an impeller kit covers the full pump service in one order.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon issues:\u003c\/strong\u003e The most frequent problem is customers reinstalling the original gasket after pump service, then discovering a cooling-water leak at the pump mounting surface shortly after. A used gasket that has been compressed and heat-cycled will not seal as reliably the second time. The other common issue is not cleaning the mounting surface before installation — old gasket material or corrosion on the surface prevents a proper seal even with a new gasket.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563854397476,"sku":"34897","price":17.51,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/4cb72616-1325-445c-ab3c-d1107d7d6b24.png?v=1779600189"},{"product_id":"merc-174","title":"Mercury MerCruiser End Cap O-Ring 25-35126 | 65–300 HP Applications","description":"\u003ch2\u003eMercury MerCruiser End Cap O-Ring — Part No. 25-35126\u003c\/h2\u003e\n\u003cp\u003eThis is the genuine Mercury Marine OEM end cap O-ring listed under part number \u003cstrong\u003e25-35126\u003c\/strong\u003e (base number \u003cstrong\u003e35126\u003c\/strong\u003e). Used on select Mercury outboard and MerCruiser sterndrive applications in the 65–300 HP range, this O-ring seals the end cap assembly at the location specified in the Mercury parts diagram. Like all OEM Mercury O-rings, it is compounded and sized for the specific sealing environment at this location — not a generic substitute.\u003c\/p\u003e\n\n\u003ch2\u003ePart Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 25-35126\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Number:\u003c\/strong\u003e 35126\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCross-Reference:\u003c\/strong\u003e 526-15\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e End Cap O-Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication Range:\u003c\/strong\u003e Select Mercury \/ MerCruiser 65–300 HP applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Genuine Mercury Marine OEM replacement O-ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSelect Mercury outboard engines — 65–300 HP range, where 25-35126 is shown in the parts diagram\u003c\/li\u003e\n\u003cli\u003eSelect MerCruiser sterndrive applications — where 25-35126 is shown in the parts diagram\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eConfirm fitment by engine model, horsepower, serial number, and parts diagram before ordering. Mercury fitment can vary by model year, assembly version, and production range within the 65–300 HP range.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eAlternate, Superseded \u0026amp; Cross-Reference Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e25-35126\u003c\/strong\u003e — current Mercury\/MerCruiser formatted number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35126\u003c\/strong\u003e — base part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e526-15\u003c\/strong\u003e — alternate cross-reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cp\u003eReplace this O-ring any time the end cap is removed for service. O-rings that have been compressed, heat-cycled, or exposed to fuel or oil should not be reused — even if they appear undamaged. Also replace if the original seal is flattened, brittle, cracked, swollen, cut, or leaking.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean the end cap O-ring groove and mating surface before installation — debris or corrosion in the groove will prevent a proper seal\u003c\/li\u003e\n\u003cli\u003eLightly lubricate the O-ring with the appropriate Mercury-approved lubricant before installation to prevent tearing during assembly\u003c\/li\u003e\n\u003cli\u003eInstall the O-ring evenly without twisting or pinching — a twisted O-ring will not seal correctly\u003c\/li\u003e\n\u003cli\u003eConfirm the O-ring is fully seated in the groove before assembling the end cap\u003c\/li\u003e\n\u003cli\u003eNever reuse the original O-ring after the end cap has been removed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this is the right O-ring for my engine?\u003c\/strong\u003e\u003cbr\u003eA: Look up your engine model and serial number in the Mercury parts diagram and confirm the diagram calls for 25-35126 or 35126 at the end cap location you are servicing. The cross-reference 526-15 may also appear in older catalog references for the same part.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use a generic O-ring of the same size?\u003c\/strong\u003e\u003cbr\u003eA: Not recommended. Mercury OEM O-rings are compounded for compatibility with the specific fluids, temperatures, and pressures at the sealing location. A generic substitute may degrade faster or not seal correctly in a marine environment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why does the HP range span 65–300 HP?\u003c\/strong\u003e\u003cbr\u003eA: This O-ring is used across a broad range of Mercury outboard and MerCruiser applications where the end cap assembly uses the same sealing specification. The exact application must be confirmed by serial number and diagram — not by horsepower alone.\u003c\/p\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This O-ring is the right call when the Mercury parts diagram specifically calls for 25-35126 or its cross-reference 526-15 at the end cap location. It’s a low-cost part that should be ordered ahead of any end cap service — having it on hand before teardown avoids delays waiting for a seal to arrive mid-job. The broad 65–300 HP application range means it appears across many common Mercury outboard and MerCruiser service jobs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon issues:\u003c\/strong\u003e The most frequent problem is searching only by the base number 35126 and missing the correct part context — using the full formatted number 25-35126 or the cross-reference 526-15 returns more reliable results. The second common issue is reusing the original O-ring after end cap removal. A seal that has been compressed and heat-cycled may look serviceable but will often leak on reassembly. Replace it every time the end cap comes off.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563854561316,"sku":"35126","price":4.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/3a433635-7ffa-4309-81eb-71a302ac67e8.png?v=1778870456"},{"product_id":"merc-186","title":"Mercury MerCruiser Alpha Bell Housing Rubber Gasket - 27-8M0204656","description":"\u003cp\u003eThe Mercury MerCruiser Quicksilver \u003cstrong\u003e27-8M0204656\u003c\/strong\u003e is a genuine Mercury Marine OEM \u003cstrong\u003ebell housing rubber gasket\u003c\/strong\u003e used on select MerCruiser sterndrive and transom assemblies. This gasket replaces the earlier \u003cstrong\u003e27-35982 \/ 35982\u003c\/strong\u003e reference and is used where the factory parts diagram calls for this sealing ring at the bell housing interface. It helps seal the specified water, exhaust, or drive-interface passage so the sterndrive connection remains properly sealed during operation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury Marine factory OEM rubber gasket.\u003c\/li\u003e\n\u003cli\u003eCurrent Mercury\/MerCruiser part number: \u003cstrong\u003e27-8M0204656\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eShort part number: \u003cstrong\u003e8M0204656\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eEarlier Mercury\/MerCruiser reference: \u003cstrong\u003e27-35982 \/ 35982\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMolded round rubber gasket\/sealing ring for select bell housing and transom assembly locations.\u003c\/li\u003e\n\u003cli\u003eGTIN\/UPC reference associated with the earlier part family: \u003cstrong\u003e745061138773\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eUsed where the Mercury\/MerCruiser sterndrive or bell housing diagram specifically calls for this gasket.\u003c\/li\u003e\n\u003cli\u003eDesigned to seal the specified drive-interface passage during sterndrive assembly service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon where-used application groups include select MerCruiser sterndrive, transom, and bell housing assemblies by serial number and diagram location, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIA \/ IB \/ IC EZ-Shift\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMC-I\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eR \/ MR\u003c\/strong\u003e drive and transom applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlpha One\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlpha One Gen II\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect classic MerCruiser inline-4, inline-6, V6, small-block V8, and big-block V8 sterndrive packages where the diagram calls for \u003cstrong\u003e27-35982\u003c\/strong\u003e or \u003cstrong\u003e27-8M0204656\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this gasket only where the Mercury\/MerCruiser parts diagram specifically calls for \u003cstrong\u003e27-8M0204656\u003c\/strong\u003e, \u003cstrong\u003e8M0204656\u003c\/strong\u003e, \u003cstrong\u003e27-35982\u003c\/strong\u003e, or \u003cstrong\u003e35982\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by drive serial number, transom assembly, bell housing style, and exact Mercury\/MerCruiser parts diagram before ordering. MerCruiser used different gaskets, O-rings, bellows, water passage seals, exhaust seals, and transom hardware across similar Alpha, MC-I, R, and MR drive families, so drive family alone is not enough to confirm fitment.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this gasket whenever the bell housing or related sterndrive interface is opened and the original seal is compressed, hardened, cracked, torn, swollen, flattened, leaking, or damaged during removal. It should also be inspected if there is water leakage, exhaust leakage, visible deterioration around the bell housing interface, or sealing failure after drive service.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eClean the mating surfaces fully before installing the new gasket. Remove old rubber, gasket material, salt buildup, corrosion residue, grease, and debris without gouging the sealing faces. Inspect the bell housing, transom assembly, water passage area, exhaust passage area, bellows, clamps, fasteners, and related seals while the drive is apart. Install the gasket in the exact position shown in the Mercury\/MerCruiser service diagram and tighten the assembly using the correct service-manual procedure for the drive model.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-8M0204656\u003c\/strong\u003e — current Mercury\/MerCruiser formatted service part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8M0204656\u003c\/strong\u003e — current short part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e27-35982\u003c\/strong\u003e — earlier Mercury\/MerCruiser reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e35982\u003c\/strong\u003e — earlier short part number\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBell housing gaskets should be replaced whenever the sealing joint is disturbed. Even if the old gasket looks reusable, compression set and age can prevent it from sealing evenly after reassembly. Matching the gasket by Mercury part number and drive diagram helps prevent leaks at the sterndrive connection and avoids repeat teardown.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563855216676,"sku":"35982","price":6.82,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/df32c149-838e-44c0-bd4a-9b8edd159e2b.png?v=1781126758"},{"product_id":"merc-196","title":"Mercury Seal 36556","description":"\u003cp data-start=\"63\" data-end=\"373\"\u003eMercury 36556 is a genuine OEM seal listed in Mercury catalog format as \u003cstrong data-start=\"161\" data-end=\"173\"\u003e26-36556\u003c\/strong\u003e. Dealer listings identify it by size as \u003cstrong data-start=\"214\" data-end=\"251\"\u003eSeal (.500 Inch Outside Diameter)\u003c\/strong\u003e, and multiple seller listings commonly describe it as a \u003cstrong data-start=\"308\" data-end=\"334\"\u003ewater outlet tube seal\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"375\" data-end=\"393\"\u003e\u003cstrong data-start=\"375\" data-end=\"391\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"394\" data-end=\"686\"\u003e\n\u003cli data-start=\"394\" data-end=\"443\"\u003eGenuine Mercury Marine \/ Quicksilver OEM part\u003c\/li\u003e\n\u003cli data-start=\"444\" data-end=\"469\"\u003ePart number \u003cstrong data-start=\"458\" data-end=\"467\"\u003e36556\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"470\" data-end=\"513\"\u003eMercury shorthand listing: \u003cstrong data-start=\"499\" data-end=\"511\"\u003e26-36556\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"514\" data-end=\"561\"\u003eListed size: \u003cstrong data-start=\"529\" data-end=\"559\"\u003e.500 inch outside diameter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"562\" data-end=\"686\"\u003eSmall sealing component used in Mercury and MerCruiser cooling-related applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"688\" data-end=\"1105\"\u003e\u003cstrong data-start=\"688\" data-end=\"712\"\u003eEngine Compatibility\u003c\/strong\u003e\u003cbr data-start=\"712\" data-end=\"715\"\u003eThis seal appears across a very broad range of Mercury and MerCruiser applications, including many classic Mercury outboards and older \u003cstrong data-start=\"850\" data-end=\"885\"\u003eBravo \/ Bravo Two \/ Bravo Three\u003c\/strong\u003e drive families in dealer \"Where Used\" listings. Because the fitment range is so broad, exact compatibility should always be confirmed by \u003cstrong data-start=\"1023\" data-end=\"1050\"\u003emodel and serial number\u003c\/strong\u003e before ordering. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1107\" data-end=\"1395\"\u003e\u003cstrong data-start=\"1107\" data-end=\"1139\"\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003cbr data-start=\"1139\" data-end=\"1142\"\u003ePlease confirm compatibility in the Mercury Parts Catalog using your exact engine or drive serial number before purchase. Mercury's official catalog is organized by model and serial number for accurate parts lookup. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1397\" data-end=\"1714\"\u003e\u003cstrong data-start=\"1397\" data-end=\"1433\"\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003cbr data-start=\"1433\" data-end=\"1436\"\u003eReplace this seal when the original is hardened, damaged, leaking, or being renewed during cooling-system or water outlet tube service. That service context is based on seller descriptions that identify 26-36556 as a water outlet tube seal. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1716\" data-end=\"2020\"\u003e\u003cstrong data-start=\"1716\" data-end=\"1738\"\u003eInstallation Notes\u003c\/strong\u003e\u003cbr data-start=\"1738\" data-end=\"1741\"\u003eInstall only the exact seal specified for the application being serviced. Small OEM seals can look interchangeable, but diameter and application location matter, so matching by \u003cstrong data-start=\"1918\" data-end=\"1958\"\u003epart number and serial-based diagram\u003c\/strong\u003e is the safest approach. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2022\" data-end=\"2063\"\u003e\u003cstrong data-start=\"2022\" data-end=\"2061\"\u003eAlternate \/ Superseded Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2064\" data-end=\"2205\"\u003e\n\u003cli data-start=\"2064\" data-end=\"2205\"\u003e\n\u003cstrong data-start=\"2066\" data-end=\"2078\"\u003e26-36556\u003c\/strong\u003e\u003cbr data-start=\"2078\" data-end=\"2081\"\u003eNo confirmed superseded Mercury part number was established from the sources reviewed. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2207\" data-end=\"2620\"\u003e\u003cstrong data-start=\"2207\" data-end=\"2229\"\u003eParts Desk Insight\u003c\/strong\u003e\u003cbr data-start=\"2229\" data-end=\"2232\"\u003eSmall cooling-system seals are easy to overlook, but they are often the difference between a dry, reliable assembly and a nuisance leak. Matching the exact OEM seal is the smart move anytime the tube or housing is already apart. This is a practical service inference based on the part's seal function and common water-outlet application descriptions. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2622\" data-end=\"2687\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563855544356,"sku":"36556","price":6.89,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/93dca315-2a5d-4120-8a4e-5453401629fb.png?v=1775791223"},{"product_id":"merc-197","title":"Mercury MerCruiser Driveshaft Housing Water Seal - 36557","description":"\u003cp\u003eThe Mercury MerCruiser Quicksilver \u003cstrong\u003edriveshaft housing water seal\u003c\/strong\u003e is a genuine Mercury Marine OEM sealing component used on select vintage Mercury outboards and early MerCruiser sterndrive assemblies. This seal is used where the factory parts diagram calls for the exact seal number in the driveshaft housing, lower unit, bottom cowl, or water-passage area. It helps maintain proper cooling-water routing through the housing connection and should be replaced whenever the related sealing joint is opened or the original seal is hardened, cracked, flattened, or leaking.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury Marine factory OEM sealing component.\u003c\/li\u003e\n\u003cli\u003eUsed in select vintage Mercury outboard and MerCruiser sterndrive cooling-water passage locations.\u003c\/li\u003e\n\u003cli\u003eCommonly associated with driveshaft housing, lower-unit, bottom-cowl, and water-transfer sealing points.\u003c\/li\u003e\n\u003cli\u003eHelps seal cooling-water pathways between connected housings.\u003c\/li\u003e\n\u003cli\u003eImportant during water pump, impeller, lower-unit, or driveshaft housing service.\u003c\/li\u003e\n\u003cli\u003eShould be matched by exact Mercury part number and factory diagram location before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon where-used application groups include select Mercury and MerCruiser models by serial number and diagram location, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury 65 HP\u003c\/strong\u003e outboards, serial range \u003cstrong\u003e1765044 through 2119748\u003c\/strong\u003e, where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury 90 HP\u003c\/strong\u003e outboards, serial range \u003cstrong\u003e1766824 through 1869775\u003c\/strong\u003e, where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury 100 HP and 110 HP\u003c\/strong\u003e outboards, serial range \u003cstrong\u003e1768404 through 2318585\u003c\/strong\u003e, where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 120 \/ 140 \/ 165\u003c\/strong\u003e sterndrive applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 470 \/ 485\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 225-S \/ 228 \/ 233 \/ 250 \/ 260 \/ 888 \/ 898\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser Model 60 Renault 68\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this seal only where the Mercury\/MerCruiser parts diagram specifically calls for the exact part number.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by engine or drive serial number, housing style, cooling-water passage layout, and exact Mercury\/MerCruiser parts diagram before ordering. Early Mercury outboards and MerCruiser sterndrives used many similar-looking seals across driveshaft housings, lower units, water pump areas, and transom-related passages, so model family alone is not enough to confirm fitment.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this seal if there is visible water leakage at the driveshaft housing connection, cooling-water leakage near the lower unit, a damaged or flattened old seal, or if the seal is disturbed during impeller, water pump, lower-unit, or driveshaft housing service. Old rubber seals often lose compression and may not reseal properly after disassembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eClean both mating surfaces before installing the new seal. Remove old rubber, salt buildup, corrosion residue, grease, and debris without gouging the housing surfaces. Inspect the water tube, water pump housing, driveshaft housing, lower-unit mating face, fasteners, and related gaskets while the assembly is apart. Install the seal in the exact orientation shown in the Mercury\/MerCruiser service diagram and follow the correct tightening sequence for the specific model.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eExact Mercury\/MerCruiser part number needed before publishing\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eVerify any older, superseded, or replacement numbers by serial number and factory diagram before substitution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCooling-water seals in vintage outboards and early MerCruiser drives should be replaced when the joint is opened, even if the old seal looks usable. A compressed or hardened seal can allow cooling water to escape at the housing connection, which may reduce water delivery and create repeat teardown work after the unit is reassembled.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563855577124,"sku":"36557","price":6.74,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/83eeddbf-b357-45d8-86f7-f0697d920671.png?v=1781128200"},{"product_id":"merc-207","title":"Mercury MerCruiser Exhaust Tube Seal - 37641001","description":"\u003cp\u003ehe Mercury MerCruiser Quicksilver \u003cstrong\u003e37641001\u003c\/strong\u003e is a genuine Mercury Marine OEM \u003cstrong\u003eexhaust tube seal\u003c\/strong\u003e used on select vintage Mercury outboard and MerCruiser sterndrive exhaust housing assemblies. This seal replaces the earlier \u003cstrong\u003e26-37641 \/ 37641\u003c\/strong\u003e reference and is used where the factory parts diagram calls for this seal at the exhaust tube, exhaust housing pocket, driveshaft housing, or lower-unit interface. It helps seal the exhaust and cooling-water passage area so gases and water remain routed through the intended housing channels.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury Marine factory OEM exhaust tube seal.\u003c\/li\u003e\n\u003cli\u003eCurrent Mercury service part number: \u003cstrong\u003e37641001\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eEarlier Mercury\/MerCruiser reference: \u003cstrong\u003e26-37641 \/ 37641\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eMolded rubber seal for select exhaust tube and exhaust housing pocket locations.\u003c\/li\u003e\n\u003cli\u003eGTIN\/UPC reference associated with the earlier part family: \u003cstrong\u003e745061139763\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eListed dimensions: \u003cstrong\u003e3.75 in. L x 1.38 in. W x 2.50 in. H\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eListed weight: \u003cstrong\u003e0.09 lb\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eUsed where the Mercury\/MerCruiser parts diagram specifically calls for this seal in the exhaust housing or lower-unit interface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eApplication Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon where-used application groups include select vintage Mercury outboards and MerCruiser sterndrive assemblies by serial number and diagram location, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury 65 HP\u003c\/strong\u003e outboards, serial range \u003cstrong\u003e1765044 through 2119748\u003c\/strong\u003e, where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury 90 HP\u003c\/strong\u003e outboards, serial range \u003cstrong\u003e1766824 through 1869775\u003c\/strong\u003e, where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury 100 HP and 110 HP\u003c\/strong\u003e outboards, serial range \u003cstrong\u003e1768404 through 2318585\u003c\/strong\u003e, where specified\u003c\/li\u003e\n\u003cli\u003eSelect Mercury lower gearcase and exhaust housing assemblies using the matching exhaust tube seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 120 \/ 140 \/ 165\u003c\/strong\u003e sterndrive applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 470 \/ 485\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser 225-S \/ 228 \/ 233 \/ 250 \/ 260 \/ 888 \/ 898\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser Model 60 Renault 68\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this seal only where the Mercury\/MerCruiser parts diagram specifically calls for \u003cstrong\u003e37641001\u003c\/strong\u003e, \u003cstrong\u003e26-37641\u003c\/strong\u003e, or \u003cstrong\u003e37641\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by engine or drive serial number, exhaust housing style, lower-unit configuration, water passage layout, and exact Mercury\/MerCruiser parts diagram before ordering. Vintage Mercury outboards and early MerCruiser drives used many similar rubber seals across exhaust, cooling-water, driveshaft housing, and lower-unit mating locations.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this seal if the original rubber is hardened, cracked, flattened, swollen, torn, missing, or damaged during lower-unit or driveshaft housing service. It should also be inspected when servicing water pump components, exhaust housing joints, cooling-water leaks, or any area where exhaust or water may be bypassing the intended passage.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eClean the exhaust housing pocket, lower-unit mating surface, and surrounding water\/exhaust passage area before installing the new seal. Remove old rubber, salt buildup, carbon residue, corrosion, and debris without gouging the sealing surfaces. Inspect the water tube, exhaust tube, lower-unit housing, driveshaft housing, fasteners, and related gaskets while the assembly is apart. Install the seal in the exact orientation shown in the Mercury\/MerCruiser service diagram.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e37641001\u003c\/strong\u003e — current Mercury service part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e26-37641\u003c\/strong\u003e — earlier Mercury\/MerCruiser formatted part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e37641\u003c\/strong\u003e — earlier short part number\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eExhaust tube seals on older outboards and sterndrives should be replaced when the housing joint is disturbed. A compressed or aged seal may not reseal correctly after disassembly, which can allow exhaust or cooling water to bypass the intended passage and create repeat service work after reassembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563855904804,"sku":"37641","price":6.35,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/43e36b3e-b3bd-4094-94bc-1c060400d62a.png?v=1781133495"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/collections\/Gasket_Seal_O-Ring.png?v=1768868750","url":"https:\/\/marisolmarine.com\/collections\/gaskets-seals-o-rings.oembed?page=8","provider":"Marisol Marine Company","version":"1.0","type":"link"}