{"product_id":"merc-46","title":"Mercury Complete Engine Gasket Set 27-42364A92 | 6–15 HP 2-Stroke Outboard","description":"\u003ch2\u003eMercury Complete Engine Gasket Set 27-42364A92\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 27-42364A92 (short ref: 42364A92)\u003cbr\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mercury \/ Quicksilver\u003cbr\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Complete Engine Gasket Set — Powerhead \u0026amp; Lower Unit (OEM)\u003cbr\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Outboard Powerhead \/ Lower Unit\u003cbr\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 42364A91, 42364A86\u003cbr\u003e\n\u003cstrong\u003eQuantity Required:\u003c\/strong\u003e 1 complete set per engine\u003cbr\u003e\n\u003cstrong\u003eGTIN \/ UPC:\u003c\/strong\u003e 745061147539\u003cbr\u003e\n\u003cstrong\u003eApproximate Weight:\u003c\/strong\u003e 400 g\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhat This Part Is\u003c\/h3\u003e\n\u003cp\u003eThe 27-42364A92 is a genuine OEM complete engine gasket set covering both the powerhead and lower unit on selected small Mercury and Mariner 2-stroke outboards. It is a major-service kit intended for powerhead teardowns and engine rebuilds, not a top-end-only or head gasket kit. Individual gasket and seal usage varies by engine model — not every component in the set is used on every supported horsepower application.\u003c\/p\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cp\u003eConfirm engine horsepower, serial number, and the complete gasket-set parts diagram before ordering. Fitment varies by production year and serial range within each horsepower family.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMercury \/ Mariner 6 HP 2-stroke (selected 1986–1993)\u003c\/li\u003e\n\u003cli\u003eMercury \/ Mariner 8 HP 2-stroke (selected 1986–1993)\u003c\/li\u003e\n\u003cli\u003eMercury \/ Mariner 9.9 HP 2-stroke (selected 1986–1993)\u003c\/li\u003e\n\u003cli\u003eMercury \/ Mariner 10 HP \/ 10 Magnum \/ 10 Marathon 2-stroke (selected 1990–1998)\u003c\/li\u003e\n\u003cli\u003eMercury XR10 2-stroke (selected applications)\u003c\/li\u003e\n\u003cli\u003eMercury \/ Mariner 15 HP 2-stroke (selected 1988–1993)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKit Components\u003c\/h3\u003e\n\u003cp\u003eComponent usage varies by engine model. Typical contents include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReed block gasket\u003c\/li\u003e\n\u003cli\u003eBaffle plate gasket\u003c\/li\u003e\n\u003cli\u003eExhaust cover gasket\u003c\/li\u003e\n\u003cli\u003eCylinder block cover gasket\u003c\/li\u003e\n\u003cli\u003eIntake cover gasket (selected 6\/8 HP configurations)\u003c\/li\u003e\n\u003cli\u003eThermostat cover gasket\u003c\/li\u003e\n\u003cli\u003ePowerhead-to-adapter-plate gasket\u003c\/li\u003e\n\u003cli\u003eWater-tube seal\u003c\/li\u003e\n\u003cli\u003eWater-tube gasket\u003c\/li\u003e\n\u003cli\u003eDriveshaft-housing gasket\u003c\/li\u003e\n\u003cli\u003eLower-unit O-ring\u003c\/li\u003e\n\u003cli\u003eWater-inlet-tube seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eMatch each gasket and seal to the Mercury service diagram for your specific engine before assembly. Do not assume every included component applies to your configuration.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eSerial Number Notice\u003c\/h3\u003e\n\u003cp\u003eBecause 42364A92 spans several horsepower families and production years, serial number verification is essential. Gasket usage, mating surface dimensions, and sealing arrangements can differ between otherwise similar engines in the same horsepower class. Always confirm against the parts diagram for your exact engine serial number.\u003c\/p\u003e\n\n\u003ch3\u003eWhen to Use This Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePowerhead teardown or complete engine rebuild\u003c\/li\u003e\n\u003cli\u003eCylinder block or cover service\u003c\/li\u003e\n\u003cli\u003eExhaust-cover removal and service\u003c\/li\u003e\n\u003cli\u003eReed-block or intake service\u003c\/li\u003e\n\u003cli\u003eThermostat or cooling-passage overhaul\u003c\/li\u003e\n\u003cli\u003ePowerhead removal from the driveshaft housing\u003c\/li\u003e\n\u003cli\u003eLower-unit or water-tube sealing service as part of a broader rebuild\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMatch each gasket and seal to the exact Mercury service diagram for the engine being rebuilt\u003c\/li\u003e\n\u003cli\u003eClean all mating surfaces and inspect aluminum sealing surfaces for corrosion, distortion, or old gasket residue before assembly\u003c\/li\u003e\n\u003cli\u003eDo not assume every gasket in the set is used on your specific horsepower configuration\u003c\/li\u003e\n\u003cli\u003eWhile the powerhead is apart, inspect the water-pump components and lower-unit driveshaft seals — access is already available at this point\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePart Number Cross-Reference\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent OEM:\u003c\/strong\u003e 27-42364A92 \/ 42364A92\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 42364A91\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 42364A86\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersession chain:\u003c\/strong\u003e 42364A86 → 42364A91 → 42364A92\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this a head gasket kit or a complete engine gasket set?\u003c\/strong\u003e\u003cbr\u003eA: This is a complete powerhead-and-lower-unit gasket set, not a head-gasket-only kit. It covers the full range of gaskets and seals needed for a major engine teardown on supported 6–15 HP 2-stroke applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need all the gaskets in the kit for my engine?\u003c\/strong\u003e\u003cbr\u003eA: Not necessarily. Individual component usage varies by engine model and horsepower. For example, the intake-cover gasket included in the set applies to certain 6\/8 HP configurations but is not used on every supported engine. Always reference your specific engine’s parts diagram.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the A92 suffix mean?\u003c\/strong\u003e\u003cbr\u003eA: It indicates the current revision in Mercury’s kit part numbering. 42364A92 supersedes the earlier 42364A91 and 42364A86 kits. Always order by the current number to ensure you receive the latest component specification.\u003c\/p\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e 27-42364A92 is the right kit when a supported 6–15 HP Mercury or Mariner 2-stroke engine is going through a full powerhead teardown or rebuild. Ordering the complete gasket set at the start of the job avoids mid-rebuild delays when individual gaskets are found damaged during disassembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon issues:\u003c\/strong\u003e The most frequent mistake is assuming every gasket in the kit applies to the engine being rebuilt — some components are configuration-specific and using the wrong gasket in the wrong location causes leaks. A second common issue is starting a rebuild without also planning for water-pump and lower-unit seal service; with the powerhead off, access to those components is already available and replacing them at the same time avoids a repeat teardown.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/11167578161188\"\u003eMercury Gearcase Driveshaft Oil Seal 26-413651\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131646390308\"\u003eSierra Marine Fuel Pump 18-7278 — Mercury \/ Mariner 4–15 HP 2-Stroke\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131405545508\"\u003eMercury Quicksilver 2-Stroke Outboard Oil Seal 26-41953\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131438411812\"\u003eMercury High Performance 2-Stroke Oil 8M0078011\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131424583716\"\u003eMercury Premium TC-W3 2-Stroke Oil 858021KC1\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":51324680175652,"sku":"42364A92","price":164.79,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/a01848ea-e797-417d-ba22-593d13f609cf.png?v=1788662374","url":"https:\/\/marisolmarine.com\/products\/merc-46","provider":"Marisol Marine Company","version":"1.0","type":"link"}