{"product_id":"merc-1270","title":"Quicksilver Gasket 8M0155369 | Mercury MerCruiser OEM Seal","description":"\u003ch2\u003eQuicksilver Gasket — Part #8M0155369\u003c\/h2\u003e\n\u003cp\u003eA genuine OEM gasket for Mercury and MerCruiser assemblies. Manufactured to factory specifications for proper sealing, crush, and material compatibility. Using the correct OEM gasket ensures a leak-free seal and prevents premature failure at the mating surface.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003ePart Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 8M0155369 (catalog reference: 27-8M0155369)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Quicksilver (Mercury OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial Product Type:\u003c\/strong\u003e Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Mercury \/ MerCruiser sealing assembly (verify diagram for exact location)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold:\u003c\/strong\u003e Individually\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMercury and MerCruiser engines and drives where part number 8M0155369 appears in the parts diagram\u003c\/li\u003e\n\u003cli\u003eThe \"27-\" catalog prefix identifies this as a Mercury-series gasket\/seal component\u003c\/li\u003e\n\u003cli\u003eVerify fitment using your engine or drive serial number and the current Mercury parts diagram before ordering — gasket dimensions and material can vary between assemblies that appear similar\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhat This Part Does\u003c\/h3\u003e\n\u003cp\u003eGaskets create a pressure- or fluid-tight seal between two mating surfaces. When a gasket is crushed, hardened, torn, or contaminated, it can allow oil, water, or exhaust gases to leak past the joint. Replacing it with an OEM part restores the correct sealing surface and material properties for that specific assembly.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eRelated Parts \u0026amp; Service Items\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131398828068\"\u003eMercury MerCruiser Quicksilver O-Ring 8M0204645\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131398664228\"\u003eMercury MerCruiser Quicksilver O-Ring 20863\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131403186212\"\u003eMercury MerCruiser Alpha Bell Housing Rubber Gasket 27-8M0204656\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/11119998926884\"\u003eQuicksilver 94996Q2 Bell Housing Gasket Kit — MerCruiser R, MR \u0026amp; Alpha One Gen II\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131448995876\"\u003eMercury MerCruiser Quicksilver Bell Housing Installation Gasket Kit 94996T2\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eService Interval\u003c\/h3\u003e\n\u003cp\u003eReplace any time the assembly is disassembled for service, when leakage is present at the mating surface, or when the existing gasket shows signs of crushing, hardening, tearing, or contamination. Gaskets should never be reused once compressed.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this is the right gasket for my engine?\u003c\/strong\u003e\u003cbr\u003eA: Cross-reference part number 8M0155369 against the Mercury parts diagram for your specific engine model and serial number. The diagram position is the most reliable confirmation for gasket fitment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I reuse this gasket after disassembly?\u003c\/strong\u003e\u003cbr\u003eA: No. Once a gasket has been compressed and torqued, it conforms to the mating surfaces and cannot reliably seal again. Always install a new gasket on reassembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I replace adjacent seals or O-rings at the same time?\u003c\/strong\u003e\u003cbr\u003eA: Yes, where practical. If the assembly is already apart, replacing nearby seals and O-rings at the same time avoids having to revisit the job if an adjacent seal fails shortly after.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This gasket is the right choice when you need an exact OEM replacement for a specific Mercury or MerCruiser assembly and the part number appears in your engine's parts diagram. OEM gaskets are especially important in high-temperature or high-pressure locations where aftermarket materials may not hold up.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon issues we see:\u003c\/strong\u003e The most frequent problem with gasket orders is ordering by appearance or general size rather than by part number. Mercury uses different gasket materials and thicknesses across similar-looking assemblies. Always order by the part number shown in your diagram — not by what the old gasket looks like.\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563922391076,"sku":"8M0155369","price":4.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/images_0c42863f-a034-423d-be7e-f136cee5ba03.jpg?v=1787269338","url":"https:\/\/marisolmarine.com\/products\/merc-1270","provider":"Marisol Marine Company","version":"1.0","type":"link"}