{"product_id":"mercury-quicksilver-heavy-duty-water-pump-kit-8m0137849-15-20hp-efi-fourstroke","title":"Mercury Quicksilver Heavy-Duty Water Pump Kit 8M0137849 — 15 \u0026 20 HP EFI FourStroke","description":"\u003ch2\u003eMercury Quicksilver Heavy-Duty Water Pump Kit — OEM 8M0137849 | 15 \u0026amp; 20 HP EFI FourStroke\u003c\/h2\u003e\u003cp\u003eThis genuine OEM water pump kit is Mercury’s heavy-duty option for selected 15 HP and 20 HP EFI FourStroke outboards built from serial number 0R833820 and up. Where the standard water pump kit uses conventional components, 8M0137849 steps up with a heavy-duty face plate and housing specifically designed to extend service life in silty, sandy, or otherwise abrasive water conditions. If your engine operates in challenging water quality, this is the right kit to reach for at service time.\u003c\/p\u003e\u003ch2\u003ePart Information\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 8M0137849\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury \/ Quicksilver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial Product Type:\u003c\/strong\u003e Water pump \/ impeller service kit — heavy-duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Range:\u003c\/strong\u003e 0R833820 and above\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Heavy-duty face plate and housing for abrasive-water conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Raw-water cooling \/ lower unit water pump assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN \/ UPC:\u003c\/strong\u003e 745061045323\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMercury 15 HP EFI FourStroke — serial 0R833820 and above\u003c\/li\u003e\n\u003cli\u003eMercury 20 HP EFI FourStroke — serial 0R833820 and above\u003c\/li\u003e\n\u003cli\u003eConfirm engine horsepower and serial number before ordering — engines below serial 0R833820 use a different water pump configuration\u003c\/li\u003e\n\u003cli\u003eFor a complete water pump rebuild kit on this engine, also see \u003ca href=\"\/products\/mercury-mercruiser-quicksilver-water-pump-repair-kit-8m0135821\"\u003e8M0135821\u003c\/a\u003e — verify which kit is correct for your service requirement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRelated Parts\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"\/products\/mercury-mercruiser-quicksilver-water-pump-repair-kit-8m0135821\"\u003eMercury MerCruiser Quicksilver Water Pump Repair Kit — 8M0135821\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAt the scheduled impeller replacement interval (every 2 years or 200 hours per Mercury’s maintenance schedule)\u003c\/li\u003e\n\u003cli\u003eWhen cooling-water output from the tell-tale is weak or absent\u003c\/li\u003e\n\u003cli\u003eWhen overheating is suspected or a temperature warning is triggered\u003c\/li\u003e\n\u003cli\u003eWhen the impeller shows cracking, hardening, missing vanes, or deformation on inspection\u003c\/li\u003e\n\u003cli\u003eEngines operating in silty or sandy water should be inspected more frequently\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eService Interval\u003c\/h2\u003e\u003cp\u003eMercury recommends inspecting and replacing the water pump impeller every 2 years or 200 hours of operation, whichever comes first. In abrasive water conditions — the primary use case for this heavy-duty kit — annual inspection is strongly recommended.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRemove the lower unit per the applicable Mercury service procedure before accessing the water pump\u003c\/li\u003e\n\u003cli\u003eClean all mating surfaces and inspect related seals and pump components for wear before reassembly\u003c\/li\u003e\n\u003cli\u003eConfirm correct impeller orientation — incorrect orientation reduces water flow\u003c\/li\u003e\n\u003cli\u003eInspect the water tube and grommet for wear or damage while the pump is apart\u003c\/li\u003e\n\u003cli\u003eVerify tell-tale water flow after reassembly before returning to service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between 8M0137849 and 8M0135821?\u003c\/strong\u003e\u003cbr\u003e8M0137849 is the heavy-duty water pump kit with an upgraded face plate and housing for abrasive water conditions. \u003ca href=\"\/products\/mercury-mercruiser-quicksilver-water-pump-repair-kit-8m0135821\"\u003e8M0135821\u003c\/a\u003e is a separate water pump repair kit for the same engine family. The two kits are not identical — confirm which is appropriate for your service requirement and operating conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose the heavy-duty version over a standard kit?\u003c\/strong\u003e\u003cbr\u003eIf the engine operates regularly in silty, sandy, or turbid water, the heavy-duty face plate and housing in 8M0137849 are designed to resist wear better than standard components, extending the service life of the water pump between service intervals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this kit compatible with earlier 15\/20 HP FourStroke engines?\u003c\/strong\u003e\u003cbr\u003eNo. 8M0137849 is specified for serial 0R833820 and above. Engines below this serial number use a different water pump configuration and require a different kit.\u003c\/p\u003e\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\u003cp\u003eThe heavy-duty designation is the key selling point for 8M0137849 — it’s the right recommendation any time a customer with a 15 or 20 HP EFI FourStroke mentions that they operate in rivers, estuaries, tidal flats, or other silty environments. Standard impeller kits wear out faster in abrasive conditions, and customers who have had to replace an impeller early are usually receptive to the upgrade. The most important fitment check is the serial number — the 0R833820 break is the same cutoff as the thermostat we see on these engines, so it’s a reliable identifier for the newer engine configuration. Browse the full \u003ca href=\"\/collections\/mercury-mercruiser-and-quicksilver-cooling-system-parts\"\u003eMercury Cooling System Parts\u003c\/a\u003e collection for thermostats, housings, and related components.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":51324694003748,"sku":"8M0137849","price":92.13,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/ea622022-ec35-41d5-a556-36aeda3e87dc.png?v=1788214335","url":"https:\/\/marisolmarine.com\/products\/mercury-quicksilver-heavy-duty-water-pump-kit-8m0137849-15-20hp-efi-fourstroke","provider":"Marisol Marine Company","version":"1.0","type":"link"}