{"title":"MerCruiser 4-Stroke 180HP Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eThis page is for MerCruiser 4-Stroke 180HP outboard engines. Use it to find compatible parts and service information, including maintenance tips, common replacement items, and troubleshooting guidance. You can also browse the main MerCruiser collection. Scroll to the bottom of this page to start browsing parts for this engine. On the collection page, use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category\/section.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser\" style=\"display:inline-block; padding:10px 14px; background:#0b5cab; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse All MerCruiser Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 180HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the serial\/nameplate: typically on the transom\/swivel bracket or a sticker inside the cowling. Capture both the model designation and serial number.\u003c\/li\u003e\n    \u003cli\u003eModel code and suffix: pay attention to letters indicating shaft length (e.g., L\/XL), control type, and market\/year codes. The serial number is the most reliable reference for parts.\u003c\/li\u003e\n    \u003cli\u003ePlatform clues (4‑Stroke): look for “FourStroke” on the cowling, the number of ignition coils, and engine cover shape to help distinguish inline-4 vs. V6 variants in this horsepower class.\u003c\/li\u003e\n    \u003cli\u003eRecord rigging details: prop pitch, control type (mechanical vs. digital), and alternator rating can affect accessory and hardware compatibility.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eEngine Platform Overview\u003c\/h2\u003e\n  \u003ch3\u003eInline-4 EFI 4‑Stroke (select model years\/markets)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eInline‑4, EFI 4‑Stroke; robust midrange torque and efficient cruising.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eFourStroke 175–200 class variants (model and serial specific).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eLower weight vs. larger blocks; good fuel economy; straightforward service access.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMany wear items (plugs, filters, anodes, impeller kits) are platform‑specific. Always confirm by serial number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eV6 EFI 4‑Stroke (common in 175–200 HP range)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eV6, EFI 4‑Stroke; strong holeshot, smooth operation, higher alternator output on many models.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eFourStroke V6 175–200 class (verify exact variant by serial).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eBroad torque curve, refined NVH, robust charging for electronics.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSome fuel, cooling, and ignition parts differ from inline‑4 models. Impellers and anodes may share families but confirm fitment.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for 4‑Stroke outboards. Always follow the official service manual for your exact model and serial number.\u003c\/p\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eUse marine 4‑Stroke oil of the specified grade; replace filter at each oil change.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-oil-filters\"\u003eMerCruiser Oil Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eCheck for water intrusion and metal on the drain plug magnet.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eInspect 100 hours; replace 200–300 hours or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eGap to spec; replace sooner if misfire, fouling, or hard starts occur.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plug\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e100 hours or each season\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eReplace more frequently when using ethanol blends or in high‑moisture environments.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-fuel-filters\"\u003eMerCruiser Fuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e200 hours or every 2 seasons (sooner in sand\/silt)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eCritical for cooling; inspect housings and wear plates during service.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-impellers\"\u003eMerCruiser Impellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAnodes (sacrificial)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect monthly in saltwater; replace when 50% depleted\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMatch material (aluminum\/zinc\/magnesium) to your water type.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-anodes\"\u003eMerCruiser Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service – \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-service-maintenance-kits\"\u003eMerCruiser Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System – \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-impellers\"\u003eMerCruiser Impellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System – \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-fuel-filters\"\u003eMerCruiser Fuel Filters\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-fuel-pumps\"\u003eMerCruiser Fuel Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical – \u003ca href=\"https:\/\/seasierra.com\/collections\/alternators-1\"\u003eAlternators\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/starters\"\u003eStarters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection – \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-anodes\"\u003eMerCruiser Anodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropulsion – \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-propellers\"\u003eMerCruiser Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGaskets \u0026amp; Seals – \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-gaskets\"\u003eMerCruiser Gaskets\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eWeak tell‑tale stream or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eInspect intake screens for debris; verify impeller age; check thermostat operation.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003ewater pump kit, impeller, intake screen, thermostat gasket\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eCheck propeller for damage\/cavitation; replace fuel filter; inspect plugs.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003epropeller, fuel filter\/water separator, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eHard starting or rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eConfirm battery state, fuel freshness, and plug condition\/gap.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003espark plugs, starter, fuel filter\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eGearcase noise or metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eChange gear oil; inspect for milky oil (water); check propshaft for fishing line on seals.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003elower unit seal kit, drain\/fill gaskets, prop hardware\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eTrim\/tilt slow or won’t hold\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVerify battery voltage; listen for trim motor; check for fluid loss.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003etrim motor, seals, electrical connectors\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eSome hardware and service items are shared, but many components differ between inline‑4 and V6 platforms and across year updates. Use your serial number to confirm compatibility.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eInspect annually and replace every 200 hours or 2 seasons. Replace sooner if operating in sandy, silty, or shallow conditions, or if tell‑tale flow weakens.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should the lower unit gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eTypically every 100 hours or annually. Always replace drain\/fill gaskets and check for water contamination or excess metal on the magnet.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the full model designation, serial number, shaft length, and any rigging details (prop pitch, control type). Photos of the nameplate and the old part are helpful.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"margin-top:24px; padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eReady to find parts by horsepower, year, and model? Browse the main MerCruiser collection to locate compatible components for your 4‑Stroke 180HP outboard.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser\" style=\"display:inline-block; padding:10px 14px; background:#0b5cab; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop MerCruiser Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px; color:#555;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"160-thermostat-kit-fits-mercury-mercruiser-3-7l-4-cylinder-engines-replaces-99155t2","title":"160° Thermostat Kit – Fits Mercury\/Mercruiser 3.7L\/4-Cylinder Engines (Replaces 99155T2)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis \u003cstrong\u003e160° Thermostat Kit\u003c\/strong\u003e is designed for Mercury\/Mercruiser 3.7L (165–190 HP) 4-cylinder engines manufactured between 1983 and 1989. It ensures your engine maintains the correct operating temperature for optimal performance and longevity.\u003c\/p\u003e\n  \u003cp\u003eIt serves as a direct interchange for Mercury\/Quicksilver 99155T2, Sierra 18-3555, and GLM 13420.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eEngineered to maintain a consistent 160°F (71°C) operating temperature.\u003c\/li\u003e\n    \u003cli\u003eDesigned for use with aluminum manifolds.\u003c\/li\u003e\n    \u003cli\u003eIncludes one thermostat and one mounting gasket for a complete installation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/Quicksilver\u003c\/td\u003e\n          \u003ctd\u003e99155T2\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSierra\u003c\/td\u003e\n          \u003ctd\u003e18-3555\u003c\/td\u003e\n        \u003c\/tr\u003e\n         \u003ctr\u003e\n          \u003ctd\u003eGLM\u003c\/td\u003e\n          \u003ctd\u003e13420\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n  \u003cp\u003eConfirm your engine model and year in the table below to ensure accurate fitment.\u003c\/p\u003e\n  \u003cp\u003e\u003cb\u003eFor Mercruiser Models:\u003c\/b\u003e Please check your engine's serial number if a specific range is noted.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003eModel\u003c\/th\u003e\n          \u003cth\u003eRated HP\u003c\/th\u003e\n          \u003cth\u003eStroke\u003c\/th\u003e\n          \u003cth\u003eYears\u003c\/th\u003e\n          \u003cth\u003eOEM Part No.\u003c\/th\u003e\n          \u003cth\u003eNotes\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercruiser\u003c\/td\u003e\n          \u003ctd\u003e165 (2 BBL)\u003c\/td\u003e\n          \u003ctd\u003e165\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1985–1989\u003c\/td\u003e\n          \u003ctd\u003e99155T2\u003c\/td\u003e\n          \u003ctd\u003eSerial Range: 6916779 \u0026amp; Up\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercruiser\u003c\/td\u003e\n          \u003ctd\u003e170 (2 BBL)\u003c\/td\u003e\n          \u003ctd\u003e170\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1985–1986\u003c\/td\u003e\n          \u003ctd\u003e99155T2\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercruiser\u003c\/td\u003e\n          \u003ctd\u003e180 (4 BBL)\u003c\/td\u003e\n          \u003ctd\u003e180\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1987\u003c\/td\u003e\n          \u003ctd\u003e99155T2\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercruiser\u003c\/td\u003e\n          \u003ctd\u003e190 (4 BBL)\u003c\/td\u003e\n          \u003ctd\u003e190\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1985–1986\u003c\/td\u003e\n          \u003ctd\u003e99155T2\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercruiser\u003c\/td\u003e\n          \u003ctd\u003e3.7L (2 BBL)\u003c\/td\u003e\n          \u003ctd\u003e165\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1988–1989\u003c\/td\u003e\n          \u003ctd\u003e99155T2\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercruiser\u003c\/td\u003e\n          \u003ctd\u003e3.7LX (4 BBL)\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1988–1989\u003c\/td\u003e\n          \u003ctd\u003e99155T2\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercruiser\u003c\/td\u003e\n          \u003ctd\u003e470 (2 BBL)\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1983–1984\u003c\/td\u003e\n          \u003ctd\u003e99155T2\u003c\/td\u003e\n          \u003ctd\u003eSerial Range: 6218037-6916778\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercruiser\u003c\/td\u003e\n          \u003ctd\u003e485\/488 (4 BBL)\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1983–1984\u003c\/td\u003e\n          \u003ctd\u003e99155T2\u003c\/td\u003e\n          \u003ctd\u003eSerial Range: 6170297-6916778\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eThermostat Kit\u003c\/dd\u003e\n    \u003cdt\u003eTemperature Rating\u003c\/dt\u003e\n\u003cdd\u003e160°F (71°C)\u003c\/dd\u003e\n    \u003cdt\u003eProduct Dimensions\u003c\/dt\u003e\n\u003cdd\u003e6.0\" x 7.5\" x 2.0\"\u003c\/dd\u003e\n    \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.28 lb (0.13 kg)\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eFor use with aluminum manifolds\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Thermostat (Replaces Mercury 99155A1)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Gasket (Replaces Mercury 27-89656)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eEnsure the engine is completely cool and disconnect the battery terminals for safety.\u003c\/li\u003e\n    \u003cli\u003eDrain the engine coolant into a suitable container by opening the drain plugs or petcocks.\u003c\/li\u003e\n    \u003cli\u003eLocate the thermostat housing on the engine, typically where the main coolant hose connects.\u003c\/li\u003e\n    \u003cli\u003eRemove the bolts securing the housing cover, and carefully separate it from the manifold.\u003c\/li\u003e\n    \u003cli\u003eNote the orientation of the old thermostat before removing it. Remove the old gasket and clean both mating surfaces thoroughly.\u003c\/li\u003e\n    \u003cli\u003ePlace the new thermostat into the housing in the correct orientation. Install the new gasket.\u003c\/li\u003e\n    \u003cli\u003eRe-attach the housing cover and tighten the bolts to the manufacturer's specified torque. Do not overtighten.\u003c\/li\u003e\n    \u003cli\u003eClose the coolant drains and refill the system with the recommended type and amount of coolant.\u003c\/li\u003e\n    \u003cli\u003eReconnect the battery, start the engine, and check for any leaks around the housing. Allow the engine to reach operating temperature, monitoring the temp gauge.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I know if this thermostat fits my engine?\u003c\/summary\u003e\n    \u003cp\u003eThis kit is specifically for Mercruiser 3.7L 4-cylinder engines from 1983–1989. The most reliable method is to cross-reference your existing part number with those listed in our Part Number Matrix (Mercury 99155T2, Sierra 18-3555, GLM 13420). Always check the compatibility table and any serial number notes for your specific model.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the common signs of a failing thermostat?\u003c\/summary\u003e\n    \u003cp\u003eSymptoms of a faulty thermostat include engine overheating (stuck closed), the engine not reaching normal operating temperature (stuck open), erratic temperature gauge readings, and poor engine performance or fuel economy.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy is a 160°F rating important for this engine?\u003c\/summary\u003e\n    \u003cp\u003eThe 160°F temperature rating is specified by the manufacturer to ensure the engine operates in its ideal temperature range. Using a thermostat with a different rating can lead to performance issues, increased engine wear, or overheating.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should a marine thermostat be replaced?\u003c\/summary\u003e\n    \u003cp\u003eAs a preventative maintenance item, it is recommended to inspect your thermostat annually and replace it every 2-3 years, or immediately if you notice any signs of failure. This is especially critical for boats operated in saltwater due to higher corrosion risk.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n    \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n    \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n    \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50587184922939,"sku":"23TH636","price":30.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/99155T2_ef0ba5d8-0115-4492-899a-b872d229f357.jpg?v=1757934200"},{"product_id":"exhaust-elbow-gasket-fits-mercruiser-4-cylinder-engines-replaces-27-856705","title":"Exhaust Elbow Gasket – Fits MerCruiser 4-Cylinder Engines (Replaces 27-856705)","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis high-quality \u003cstrong\u003eExhaust Elbow Gasket\u003c\/strong\u003e creates a durable seal between the exhaust elbow\/reservoir and the manifold on specific MerCruiser 4-cylinder engines. It is designed for MerCruiser 165, 170, 190, 3.7L, 470, and 488 models manufactured between 1983 and 1989 that are equipped with aluminum exhaust manifolds.\u003c\/p\u003e\n  \u003cp\u003eThis part is a direct interchange for Mercury 27-856705, Mercury 27-97542, Sierra 18-0113-1, and Quicksilver 27-856705.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eInstallation Location: Between the exhaust elbow\/reservoir and the exhaust manifold.\u003c\/li\u003e\n    \u003cli\u003eMaterial Construction: Durable metal and fiber composite designed for marine environments.\u003c\/li\u003e\n    \u003cli\u003eEngine Application: Specifically for MerCruiser 4-Cylinder engines with aluminum exhaust manifolds.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003ePart Number\u003c\/th\u003e\n          \u003cth\u003eSuperseded By\u003c\/th\u003e\n          \u003cth\u003eNotes\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e27-856705\u003c\/td\u003e\n          \u003ctd\u003e27-97542\u003c\/td\u003e\n          \u003ctd\u003eCurrent OEM Part\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eQuicksilver\u003c\/td\u003e\n          \u003ctd\u003e27-856705\u003c\/td\u003e\n          \u003ctd\u003e27-97542\u003c\/td\u003e\n          \u003ctd\u003eOEM Alternative\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e27-97542\u003c\/td\u003e\n          \u003ctd\u003e27-856705\u003c\/td\u003e\n          \u003ctd\u003eSuperseded Part\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSierra\u003c\/td\u003e\n          \u003ctd\u003e18-0113-1\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n  \u003cp\u003eConfirm your engine model and serial number range in the table below to ensure correct fitment.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003eModel\u003c\/th\u003e\n          \u003cth\u003eRated HP\u003c\/th\u003e\n          \u003cth\u003eStroke\u003c\/th\u003e\n          \u003cth\u003eYears\u003c\/th\u003e\n          \u003cth\u003eOEM Part No.\u003c\/th\u003e\n          \u003cth\u003eNotes\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e165 (4-Cyl.) 224\/L4\u003c\/td\u003e\n          \u003ctd\u003e165\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1987\u003c\/td\u003e\n          \u003ctd\u003e27-856705\u003c\/td\u003e\n          \u003ctd\u003eSerial Range: 0B434941–0B774251\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e170 224\/L4\u003c\/td\u003e\n          \u003ctd\u003e170\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1985–1986\u003c\/td\u003e\n          \u003ctd\u003e27-856705\u003c\/td\u003e\n          \u003ctd\u003eSerial Range: 6916779–0B434940\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e190 224\/L4\u003c\/td\u003e\n          \u003ctd\u003e190\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1985–1986\u003c\/td\u003e\n          \u003ctd\u003e27-856705\u003c\/td\u003e\n          \u003ctd\u003eSerial Range: 6916779–0B436390\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e3.7L 224\/L4\u003c\/td\u003e\n          \u003ctd\u003e180-185\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1988–1989\u003c\/td\u003e\n          \u003ctd\u003e27-856705\u003c\/td\u003e\n          \u003ctd\u003eSerial Range: 0B774252 \u0026amp; Up\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e470 224\/L4\u003c\/td\u003e\n          \u003ctd\u003e170\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1983–1984\u003c\/td\u003e\n          \u003ctd\u003e27-856705\u003c\/td\u003e\n          \u003ctd\u003eSerial Range: 6218037–6916778\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e488 224\/L4\u003c\/td\u003e\n          \u003ctd\u003e185\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1983–1984\u003c\/td\u003e\n          \u003ctd\u003e27-856705\u003c\/td\u003e\n          \u003ctd\u003eSerial Range: 6170297–6916778\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Elbow Gasket\u003c\/dd\u003e\n    \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eMetal\/Fiber Composite\u003c\/dd\u003e\n    \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e6.0 × 7.5 × 0.13 inches (152 × 191 × 3.3 mm)\u003c\/dd\u003e\n    \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.05 lb (0.023 kg)\u003c\/dd\u003e\n    \u003cdt\u003eOEM Part Number\u003c\/dt\u003e\n\u003cdd\u003e27-856705\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Exhaust Elbow Gasket (Replaces 27-856705)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eEnsure the engine is off and cool. Disconnect the battery and drain the cooling system as per your engine's service manual.\u003c\/li\u003e\n    \u003cli\u003eCarefully remove the exhaust elbow and discard the old gasket.\u003c\/li\u003e\n    \u003cli\u003eThoroughly clean both mating surfaces on the manifold and the elbow. Remove all traces of old gasket material, scale, and corrosion.\u003c\/li\u003e\n    \u003cli\u003ePosition the new gasket correctly onto the manifold surface.\u003c\/li\u003e\n    \u003cli\u003eReinstall the exhaust elbow and tighten the bolts in a crossing pattern to the manufacturer's recommended torque specification to ensure an even seal.\u003c\/li\u003e\n    \u003cli\u003eReconnect the engine cooling hoses, refill the cooling system, and check for any leaks after starting the engine.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow can I confirm this gasket fits my specific MerCruiser engine?\u003c\/summary\u003e\n    \u003cp\u003eThe most reliable method is to check your engine's serial number against the ranges listed in the Engine \u0026amp; Model Compatibility table. While model and year are good indicators, the serial number provides definitive proof of fitment.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the common signs of a failing exhaust elbow gasket?\u003c\/summary\u003e\n    \u003cp\u003eSymptoms of a bad gasket include visible water or coolant leaks around the joint between the exhaust manifold and elbow, engine overheating, or excessive steam coming from the engine compartment, especially under load.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need to use sealant with this gasket?\u003c\/summary\u003e\n    \u003cp\u003eGenerally, no sealant is required. This gasket is designed to create a seal on its own when installed on clean, flat surfaces and torqued to the correct specifications. However, always consult your engine's official service manual for factory recommendations.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should this gasket be replaced?\u003c\/summary\u003e\n    \u003cp\u003eIt is best practice to replace the exhaust elbow gasket any time the exhaust elbow is removed for service. It should also be replaced immediately if any signs of leakage or failure are detected.\u003c\/p\u003e\n  \u003c\/details\u003e\n    \u003cdetails\u003e\n    \u003csummary\u003eWhy does this part supersede 27-97542?\u003c\/summary\u003e\n    \u003cp\u003eManufacturers often update parts for improved materials, durability, or sealing performance. Part number 27-856705 is the modern, approved replacement for the older 27-97542, ensuring compatibility and reliability.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n    \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n    \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n    \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify images and specifications against your original part before purchasing. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement part, not an OEM component. Brand names and part numbers are used for identification purposes only.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is highly recommended for safety and optimal performance. Improper installation can lead to engine damage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world reliability.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days, getting you back on the water sooner.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — We offer fair pricing without compromising on materials or quality control by working directly with our manufacturing partners.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50588532605243,"sku":"27-856705","price":45.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/27-856705_82eb7e49-9597-4ef2-9909-9e16ded6b56a.jpg?v=1757984547"},{"product_id":"timing-cover-gasket-set-fits-mercruiser-224-cid-3-7l-replaces-27-68714a6-27-68714a7","title":"Timing Cover Gasket Set – Fits Mercruiser 224 CID 3.7L (Replaces 27-68714A6, 27-68714A7)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eTiming Cover Gasket Set – Fits Mercruiser 224 CID 3.7L\u003c\/strong\u003e is designed for a range of Mercruiser 4-cylinder engines, including the 165, 170, 180, 190, 470, 485, and 488 HP models (224 CID \/ 3.7L) manufactured between 1980 and 1989.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for Sierra 18-4380, GLM 39760, and Mercury\/Mercruiser part numbers 27-68714A6, 27-68714A7, 68714, 72098, and 72099.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for a direct replacement fit.\u003c\/li\u003e\n\u003cli\u003eSpecifically designed for 224 CID (3.7L) 4-cylinder Mercruiser engines.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable composite gasket materials to ensure a reliable seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-4380\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e39760\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mercruiser\u003c\/td\u003e\n        \u003ctd\u003e27-68714A6\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mercruiser\u003c\/td\u003e\n        \u003ctd\u003e27-68714A7\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mercruiser\u003c\/td\u003e\n        \u003ctd\u003e68714\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mercruiser\u003c\/td\u003e\n        \u003ctd\u003e72098\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mercruiser\u003c\/td\u003e\n        \u003ctd\u003e72099\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e224 CID\u003c\/td\u003e\n        \u003ctd\u003e165\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1989\u003c\/td\u003e\n        \u003ctd\u003e27-68714A6\/27-68714A7\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e224 CID\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1989\u003c\/td\u003e\n        \u003ctd\u003e27-68714A6\/27-68714A7\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e224 CID\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1989\u003c\/td\u003e\n        \u003ctd\u003e27-68714A6\/27-68714A7\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e224 CID\u003c\/td\u003e\n        \u003ctd\u003e190\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1989\u003c\/td\u003e\n        \u003ctd\u003e27-68714A6\/27-68714A7\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e470\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1989\u003c\/td\u003e\n        \u003ctd\u003e27-68714A6\/27-68714A7\u003c\/td\u003e\n        \u003ctd\u003e224 CID\/3.7L engine\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e485\u003c\/td\u003e\n        \u003ctd\u003e185\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1989\u003c\/td\u003e\n        \u003ctd\u003e27-68714A6\/27-68714A7\u003c\/td\u003e\n        \u003ctd\u003e224 CID\/3.7L engine\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e488\u003c\/td\u003e\n        \u003ctd\u003e185\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1989\u003c\/td\u003e\n        \u003ctd\u003e27-68714A6\/27-68714A7\u003c\/td\u003e\n        \u003ctd\u003e224 CID\/3.7L engine\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eTiming Cover Gasket Set\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eGasket material (paper\/composite)\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e38.0cm x 31.0cm x 2.0cm\u003c\/dd\u003e\n  \u003cdt\u003eEngine Application\u003c\/dt\u003e\n\u003cdd\u003eFor 224 CID (3.7L) 4-cylinder Mercruiser engines\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Timing Cover Gasket Set\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and drain the engine coolant completely.\u003c\/li\u003e\n  \u003cli\u003eRemove any components blocking access to the timing cover, such as accessory belts, pulleys, and the water pump.\u003c\/li\u003e\n  \u003cli\u003eCarefully unbolt and remove the old timing cover and worn gasket.\u003c\/li\u003e\n  \u003cli\u003eThoroughly clean both the engine block and timing cover mating surfaces, ensuring they are free of old gasket material, sealant, oil, and debris.\u003c\/li\u003e\n  \u003cli\u003ePosition the new gasket on the engine block, aligning it with the bolt holes.\u003c\/li\u003e\n  \u003cli\u003eReinstall the timing cover and tighten the bolts to the manufacturer's specified torque in the correct sequence.\u003c\/li\u003e\n  \u003cli\u003eReassemble all previously removed components in reverse order.\u003c\/li\u003e\n  \u003cli\u003eRefill the cooling system, reconnect the battery, and start the engine to check for any leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if this gasket set fits my engine?\u003c\/summary\u003e\n  \u003cp\u003eThis set is specifically for 224 CID (3.7L) 4-cylinder Mercruiser engines manufactured from 1980–1989. Please verify your engine model and year against the compatibility table on this page to ensure a perfect match.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing timing cover gasket?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include visible coolant or oil leaks from the front of the engine, unexplained engine overheating, or a milky, emulsified appearance in the engine oil, which indicates coolant contamination.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs any special sealant required for installation?\u003c\/summary\u003e\n  \u003cp\u003eWhile the gasket is designed for a direct dry fit, applying a thin, even layer of a high-quality marine-grade gasket sealant can improve seal reliability. Always consult your engine's service manual for specific recommendations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should this gasket be replaced?\u003c\/summary\u003e\n  \u003cp\u003eThere is no fixed replacement interval. The timing cover gasket should be replaced whenever the timing cover is removed for service or if you detect any signs of a leak or failure.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50590215831867,"sku":"27-68714A6","price":20.8,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/27-68714A6_d62c4775-9b33-43a8-bdca-a9491430fb29.jpg?v=1758080333"},{"product_id":"intake-manifold-gasket-fits-mercruiser-3-7l-i-l4-replaces-27-70905","title":"Intake Manifold Gasket – Fits MerCruiser 3.7L I\/L4 (Replaces 27-70905)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eIntake Manifold Gasket – Fits MerCruiser 3.7L I\/L4 (Replaces 27-70905)\u003c\/strong\u003e is designed for a precise fit on Mercury\/MerCruiser 3.7L inline 4-cylinder engines, from 165 to 190 HP, manufactured between 1976 and 1989. It creates a reliable seal between the intake manifold and the cylinder head, preventing vacuum leaks and ensuring optimal engine performance.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Mercury\/MerCruiser 27-70905, Sierra 18-0158, Barr MC472770905, and GLM 31750.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered for direct-fit, surface-mount installation.\u003c\/li\u003e\n  \u003cli\u003eManufactured to meet or exceed OEM specification compliance for reliability.\u003c\/li\u003e\n  \u003cli\u003eDesigned for use with gasoline fuel systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e27-70905\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-0158\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eBarr\u003c\/td\u003e\n        \u003ctd\u003eMC472770905\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e31750\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor MerCruiser models, always verify compatibility using your engine's serial number against the ranges provided in the 'Notes' column.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e165 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e165 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1987\u003c\/td\u003e\n        \u003ctd\u003e27-70905\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0B434941-0B774251\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e170 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e170 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–1986\u003c\/td\u003e\n        \u003ctd\u003e27-70905\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 6916779-0B434940\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e180 (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e180 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1987\u003c\/td\u003e\n        \u003ctd\u003e27-70905\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0B436391-0B775248\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e190 (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e190 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–1986\u003c\/td\u003e\n        \u003ctd\u003e27-70905\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 6916779-0B436390\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.7L (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e165 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1988–1989\u003c\/td\u003e\n        \u003ctd\u003e27-70905\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0B774252 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.7LX (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e190 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1988–1989\u003c\/td\u003e\n        \u003ctd\u003e27-70905\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0B775249-0C762299\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e470 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e170 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1976–1984\u003c\/td\u003e\n        \u003ctd\u003e27-70905\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 4208730-6916778\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e485 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e185 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1982\u003c\/td\u003e\n        \u003ctd\u003e27-70905\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 5685394-6218036\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e488 (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e185 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983–1984\u003c\/td\u003e\n        \u003ctd\u003e27-70905\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 6170297-6916778\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e470 MIE\u003c\/td\u003e\n        \u003ctd\u003e170 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1981\u003c\/td\u003e\n        \u003ctd\u003e27-70905\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 5520115-6218036\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eIntake Manifold Gasket\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect fit, surface mount\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e22.0 x 7.0 x 1.25 inches (558.8 x 177.8 x 31.75 mm)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.19 pounds (0.086 kg)\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eOEM specification compliance\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Intake Manifold Gasket (27-70905)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and drain the engine coolant into a suitable container.\u003c\/li\u003e\n  \u003cli\u003eDisconnect all fuel lines, vacuum hoses, and electrical sensors attached to the intake manifold. Label them for easier reassembly.\u003c\/li\u003e\n  \u003cli\u003eCarefully unbolt and remove the intake manifold from the cylinder head.\u003c\/li\u003e\n  \u003cli\u003eRemove the old gasket and thoroughly clean both mating surfaces of any old gasket material, sealant, or debris.\u003c\/li\u003e\n  \u003cli\u003ePosition the new gasket correctly, ensuring all bolt holes and ports align perfectly.\u003c\/li\u003e\n  \u003cli\u003eReinstall the intake manifold and tighten the bolts in the manufacturer-specified sequence and to the correct torque values.\u003c\/li\u003e\n  \u003cli\u003eReconnect all hoses, lines, and sensors.\u003c\/li\u003e\n  \u003cli\u003eRefill the cooling system, start the engine, and carefully check for any coolant or vacuum leaks around the gasket area.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if my intake manifold gasket is failing?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs of a bad intake manifold gasket include engine overheating, coolant leaks (often visible near the top of the engine), a rough idle, poor engine performance, or a \"check engine\" light related to vacuum leaks or misfires.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this gasket compatible with all MerCruiser 3.7L engines?\u003c\/summary\u003e\n  \u003cp\u003eThis gasket fits a specific range of 3.7L models from 1976-1989. It is critical to check your engine's serial number against the compatible ranges listed in our Engine \u0026amp; Model Compatibility table to ensure a perfect fit.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need to use sealant with this gasket?\u003c\/summary\u003e\n  \u003cp\u003eGenerally, modern gaskets like this one are designed to be installed dry. However, always consult your engine's service manual for specific procedures. Some applications may require a small amount of sealant at corners or coolant passage junctions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the recommended replacement interval for this gasket?\u003c\/summary\u003e\n  \u003cp\u003eThere is no fixed replacement interval. Gaskets are typically replaced only when they fail or during other major engine service, such as a top-end rebuild. Regular inspection for leaks is recommended.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50590216061243,"sku":"27-70905","price":15.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/27-70905_487698f2-d031-427d-9b11-0d957ce57d25.jpg?v=1758080337"},{"product_id":"valve-cover-gasket-fits-mercruiser-3-7l-224-cid-4-cylinder-replaces-27-73666","title":"Valve Cover Gasket – Fits Mercruiser 3.7L 224 CID 4-Cylinder (Replaces 27-73666)","description":"\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis replacement \u003cstrong\u003eValve Cover Gasket – Fits Mercruiser 3.7L 224 CID 4-Cylinder (Replaces 27-73666)\u003c\/strong\u003e is engineered for a precise fit on Mercruiser 3.7L (224 CID) 4-Cylinder engines, including models from 165 to 190 HP, manufactured between 1976 and 1989. It creates a reliable seal to prevent oil leaks from the engine's valve cover.\u003c\/p\u003e\n\u003cp\u003eThis part offers a direct interchange for Mercury\/Mercruiser 27-73666, Sierra 18-0685, GLM 31820, and VICVS50176TC, ensuring compatibility with multiple systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls as a direct replacement for the original part.\u003c\/li\u003e\n\u003cli\u003eMade from a durable cork\/rubber composite for a dependable seal.\u003c\/li\u003e\n\u003cli\u003eSold as a single gasket for one valve cover.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket suppliers.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mercruiser\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-0685\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e31820\u003c\/td\u003e\n      \u003c\/tr\u003e\n        \u003ctr\u003e\n        \u003ctd\u003eVIC\u003c\/td\u003e\n        \u003ctd\u003eVS50176TC\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis part is designed specifically for the Mercruiser engine models listed. Please check your engine's serial number range for an exact match.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e165 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e165\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1987\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0B434941–0B774251\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e165 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e165\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1988–1989\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0B774252 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e170 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–1986\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 6916779–0B434940\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e170 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1987–1989\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e180 (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–1986\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e180 (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1987\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0B436391–0B775248\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e180 (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1988-1989\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e190 (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e190\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–1986\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 6916779–0B436390\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e190 (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e190\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1987–1989\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e3.7L (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e165–190\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–1987\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e3.7L (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e165\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1988–1989\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0B774252 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e3.7LX (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e165–190\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–1987\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e3.7LX (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e165\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1988–1989\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0B775249 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e470 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1976-1979\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 4208730–5520114\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e470 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1982\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 5520115–6218036\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e470 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983-1984\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 6218037-6916778\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e470 MIE\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1983\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n        \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e485 (2 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1982\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 5685394–6218036\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e488 (4 BBL.)\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983-1984\u003c\/td\u003e\n        \u003ctd\u003e27-73666\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 6170297–6916778\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eValve Cover Gasket\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect Replacement\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eCork\/Rubber Composite\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBrown\/Natural\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e69.00 × 18.00 × 1.00 inches\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.09 lbs (0.04 kg)\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eValve Cover\u003c\/dd\u003e\n  \u003cdt\u003eOther Attributes\u003c\/dt\u003e\n\u003cdd\u003eSold as a single gasket\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Valve Cover Gasket (27-73666)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the battery before beginning work. Ensure the engine is cool.\u003c\/li\u003e\n\u003cli\u003eRemove any components obstructing access to the valve cover.\u003c\/li\u003e\n\u003cli\u003eUnbolt and carefully remove the valve cover. If it is stuck, gently tap the side with a rubber mallet; do not pry between mating surfaces.\u003c\/li\u003e\n\u003cli\u003eRemove the old gasket and thoroughly clean any residual gasket material, oil, or debris from both the cylinder head and the valve cover sealing surfaces.\u003c\/li\u003e\n\u003cli\u003ePosition the new gasket onto the valve cover, ensuring it is properly seated in the groove or aligned with the bolt holes.\u003c\/li\u003e\n\u003cli\u003eReinstall the valve cover and hand-tighten the bolts.\u003c\/li\u003e\n\u003cli\u003eUsing a torque wrench, tighten the bolts in the sequence and to the value specified in your engine's service manual to ensure even pressure.\u003c\/li\u003e\n\u003cli\u003eReconnect any components that were removed and reconnect the battery. Start the engine and check for leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if my valve cover gasket is failing?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs include visible oil leaks running down the side of the engine block from the valve cover, a burning oil smell as oil drips onto hot exhaust components, and unexplained low engine oil levels.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this gasket reusable?\u003c\/summary\u003e\n  \u003cp\u003eNo, valve cover gaskets are designed for a single use. Reusing an old gasket will likely result in leaks, as it has already been compressed and heat-cycled.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDo I need to use sealant with this gasket?\u003c\/summary\u003e\n  \u003cp\u003eThis cork\/rubber composite gasket is designed to be installed dry. However, it is standard practice to apply a small amount of RTV sealant at any sharp corners or seams, such as where the timing cover or intake manifold meet the cylinder head. Always consult your service manual for specific recommendations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the torque sequence for the valve cover bolts?\u003c\/summary\u003e\n  \u003cp\u003eThe correct torque value and tightening sequence are critical for a leak-free seal and to avoid damaging the valve cover. This information is specific to your engine and can be found in the official service manual for your Mercruiser model.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs there a recommended replacement interval?\u003c\/summary\u003e\n  \u003cp\u003eThere is no fixed replacement interval. Gaskets should be replaced whenever the valve cover is removed for service (e.g., valve adjustment) or as soon as any signs of leaking are detected.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50590216257851,"sku":"27-73666","price":27.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/27-73666_f0d899f5-7c75-492c-9f80-b5423eec10f8.jpg?v=1758080342"},{"product_id":"thermostat-kit-fits-mercury-marine-mercruiser-engines-replaces-338884","title":"Thermostat Kit – Fits Mercury Marine MerCruiser Engines (Replaces 338884)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eThermostat Kit – Fits Mercury Marine MerCruiser Engines (Replaces 338884)\u003c\/strong\u003e is engineered to regulate engine temperature for optimal performance in a wide range of Mercury Marine and MerCruiser gasoline stern drive and inboard engines from 1974 to 2021, including 3.0L to 8.2L models.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Mercury 338884, Sierra 18-3562, GLM 13371, Mallory 9-13009, and Quicksilver 338884, ensuring a precise fit and reliable function.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInstalls directly into the engine's cooling system.\u003c\/li\u003e\n  \u003cli\u003eOpens at a consistent 142°F (61.1°C) to maintain proper operating temperature.\u003c\/li\u003e\n  \u003cli\u003eIncludes the necessary thermostat, gasket, and mounting bolts for a complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e338884\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e46-338884\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eQuicksilver\u003c\/td\u003e\n        \u003ctd\u003e338884\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3562\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e13371\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMallory\u003c\/td\u003e\n        \u003ctd\u003e9-13009\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor MerCruiser models, this thermostat fits a wide variety of inline, V6, and V8 gasoline engines. For Mercury outboards, it is specific to V6 and V8 models from 1994 onwards.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.0L (181 CID)\u003c\/td\u003e\n        \u003ctd\u003e130–140\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1990–2015\u003c\/td\u003e\n        \u003ctd\u003e338884\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e4.3L (262 CID)\u003c\/td\u003e\n        \u003ctd\u003e180–220\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1986–2021\u003c\/td\u003e\n        \u003ctd\u003e338884\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.0L (305 CID)\u003c\/td\u003e\n        \u003ctd\u003e220–260\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983–2021\u003c\/td\u003e\n        \u003ctd\u003e338884\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.7L (350 CID)\u003c\/td\u003e\n        \u003ctd\u003e220–350\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1974–2021\u003c\/td\u003e\n        \u003ctd\u003e338884\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e6.2L (377 CID)\u003c\/td\u003e\n        \u003ctd\u003e300–350\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2015–2021\u003c\/td\u003e\n        \u003ctd\u003e338884\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e7.4L (454 CID)\u003c\/td\u003e\n        \u003ctd\u003e310–385\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1991–2001\u003c\/td\u003e\n        \u003ctd\u003e338884\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e8.2L (502 CID)\u003c\/td\u003e\n        \u003ctd\u003e380–430\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1991–2018\u003c\/td\u003e\n        \u003ctd\u003e338884\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e200–350 HP Outboards\u003c\/td\u003e\n        \u003ctd\u003e200–350\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1994–2021\u003c\/td\u003e\n        \u003ctd\u003e338884\u003c\/td\u003e\n        \u003ctd\u003eV6 and V8 models only\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eThermostat Kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eEngine Cooling System\u003c\/dd\u003e\n  \u003cdt\u003eOperating Temperature\u003c\/dt\u003e\n\u003cdd\u003e142°F (61.1°C) Opening Temperature\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM Replacement\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eStainless Steel \/ Brass\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eMetallic\u003c\/dd\u003e\n  \u003cdt\u003eProduct Dimensions\u003c\/dt\u003e\n\u003cdd\u003e6.0 x 7.13 x 1.25 inches\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.23 kg (0.5 lb)\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eIncludes Gasket and Mounting Hardware\u003c\/dd\u003e\n  \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1-Year Limited Warranty\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Thermostat (338884)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Gasket (27-835844)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Mounting Bolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eEnsure the engine is completely cool. Disconnect the boat's battery for safety.\u003c\/li\u003e\n  \u003cli\u003ePlace a drain pan beneath the engine's heat exchanger or thermostat housing and drain the coolant.\u003c\/li\u003e\n  \u003cli\u003eLocate the thermostat housing. It is typically on top of the engine where the main coolant hose connects.\u003c\/li\u003e\n  \u003cli\u003eRemove the bolts securing the housing cover. You may need to gently tap the cover to break the seal.\u003c\/li\u003e\n  \u003cli\u003eNote the orientation of the old thermostat before removing it and its gasket.\u003c\/li\u003e\n  \u003cli\u003eThoroughly clean both mating surfaces of the housing and its cover, removing all old gasket material.\u003c\/li\u003e\n  \u003cli\u003eInstall the new thermostat in the correct orientation, followed by the new gasket.\u003c\/li\u003e\n  \u003cli\u003eReinstall the housing cover and tighten the bolts to the manufacturer-specified torque. Do not overtighten.\u003c\/li\u003e\n  \u003cli\u003eReconnect all hoses, refill the cooling system with the appropriate coolant, and reconnect the battery.\u003c\/li\u003e\n  \u003cli\u003eStart the engine and let it warm up, carefully checking for any leaks around the thermostat housing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if my thermostat has failed?\u003c\/summary\u003e\u003cp\u003eCommon signs of a failed thermostat include the engine overheating (stuck closed) or taking too long to reach operating temperature (stuck open). You may see corresponding alarms on your gauges or notice poor performance.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this thermostat fit my specific engine model?\u003c\/summary\u003e\u003cp\u003eThis kit is designed for a broad range of MerCruiser and Mercury engines as listed in the compatibility table. Always verify your engine's model and year range against the table. If you are unsure, check your engine's service manual or part number.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the gasket included in this kit?\u003c\/summary\u003e\u003cp\u003eYes, this is a complete kit that includes the thermostat, a new gasket, and two mounting bolts, providing everything needed for a standard replacement.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the correct operating temperature for this thermostat?\u003c\/summary\u003e\u003cp\u003eThis thermostat is designed to begin opening at 142°F (61.1°C), which is the standard temperature for the specified raw water-cooled engine models.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should a marine thermostat be replaced?\u003c\/summary\u003e\u003cp\u003eWhile there's no fixed interval, it is good practice to inspect the thermostat every few years or 200-300 hours. It is often replaced as preventative maintenance, especially if the boat is used in saltwater, which can accelerate corrosion.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat's the difference between an OEM part and an aftermarket one?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). It has been engineered and manufactured to meet or exceed original equipment specifications in terms of fit, form, and function. Our parts are produced in an ISO 9002 certified facility and undergo batch inspections to ensure quality and consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow fast is shipping and what does it cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free on all orders. Expedited shipping options and associated costs, if available for your location, will be displayed at checkout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter an issue, please contact our support team with your order number. Returns are accepted within our standard return window for unused items in their original packaging. Please see our policy page or contact us for detailed instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50592380387643,"sku":"338884","price":99.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/338884_9c288eea-c49e-4d46-8d3f-769d6f4308d7.jpg?v=1758212895"},{"product_id":"exhaust-manifold-gasket-fits-mercruiser-3-7l-4-cylinder-engines-replaces-27-68715","title":"Exhaust Manifold Gasket – Fits MerCruiser 3.7L 4-Cylinder Engines (Replaces 27-68715)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis high-quality \u003cstrong\u003eExhaust Manifold Gasket\u003c\/strong\u003e is engineered for a precise fit on Mercury MerCruiser 3.7L 4-cylinder engines from 1976 to 1989, including 165, 170, 180, 190 HP, 3.7L, 3.7LX, 470, 485, and 488 models. It is also designed to fit select OMC 460 and 754 model engines, providing a reliable seal to prevent exhaust leaks.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for multiple part numbers, offering a versatile interchange with references from Mercury Marine, Sierra, GLM, Mallory, OMC, and Chrysler.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInstalls between the exhaust manifold and the cylinder head.\u003c\/li\u003e\n  \u003cli\u003eConstructed from durable composite gasket material to withstand high temperatures and pressure.\u003c\/li\u003e\n  \u003cli\u003eEnsures a tight seal to maintain engine performance and efficiency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Marine\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-0956-1 \/ 18-0992\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e31710 \/ 33800\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMallory\u003c\/td\u003e\n        \u003ctd\u003e9-61418\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e912405\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eChrysler\u003c\/td\u003e\n        \u003ctd\u003e118-614\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model and year in the table below to ensure accurate fitment.\u003c\/p\u003e\n\u003cp\u003eThe following table details compatibility for Mercury MerCruiser engines, including model years and corresponding serial number ranges.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e165 (2 BBL.) MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e165\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1987\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 0B434941 THRU 0B774251\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e170 (2 BBL.) MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–1986\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 6916779 THRU 0B434940\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e180 (4 BBL.) MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1987\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 0B436391 THRU 0B775248\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e190 (4 BBL.) MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e190\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–1986\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 6916779 THRU 0B436390\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.7L (2 BBL.) MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e165\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1988–1989\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 0B774252 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.7LX (4 BBL.) MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1988–1989\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 0B775249 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e470 (2 BBL.) MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1976–1979\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 4208730 THRU 5520114\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e470 (2 BBL.) MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1982\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 5520115 THRU 6218036\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e470 (2 BBL.) MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983–1984\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 6218037 THRU 6916778\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e470 MIE MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1981\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 5520115 THRU 6218036\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e485 (2 BBL.) MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e185\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1982\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 5685394 THRU 6218036\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e488 (4 BBL.) MERCURY 224 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e185\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983–1984\u003c\/td\u003e\n        \u003ctd\u003e27-68715\u003c\/td\u003e\n        \u003ctd\u003eSerial: 6170297 THRU 6916778\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Manifold Gasket\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eBetween exhaust manifold and cylinder head\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eComposite gasket material\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e48.0 x 9.5 x 0.2 cm (approx. 18.9 x 3.74 x 0.08 inches)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.142 kg (5 ounces)\u003c\/dd\u003e\n  \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n\u003cdd\u003eMercury Marine 27-68715\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eMarine 4-cylinder engines\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Exhaust Manifold Gasket (27-68715)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the boat's battery and drain the engine coolant from the manifold.\u003c\/li\u003e\n  \u003cli\u003eCarefully unbolt and remove the exhaust manifold from the cylinder head.\u003c\/li\u003e\n  \u003cli\u003eRemove the old gasket and thoroughly clean any residue from both mating surfaces.\u003c\/li\u003e\n  \u003cli\u003ePosition the new gasket, ensuring it aligns correctly with all ports and bolt holes.\u003c\/li\u003e\n  \u003cli\u003eReinstall the manifold and tighten the bolts to the manufacturer's recommended torque specifications and sequence.\u003c\/li\u003e\n  \u003cli\u003eRefill the cooling system with the appropriate coolant.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery, start the engine, and carefully check for any exhaust or fluid leaks around the manifold.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm this gasket will fit my engine?\u003c\/summary\u003e\n  \u003cp\u003eThis gasket fits a range of MerCruiser 3.7L 4-cylinder engines (1976–1989) and select OMC models. To ensure a perfect match, check the \"Engine \u0026amp; Model Compatibility\" table and verify your engine's serial number is within the specified range. Cross-referencing your old part number with our \"Part Number Matrix\" is also a reliable confirmation method.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing exhaust manifold gasket?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include a ticking or hissing sound from the engine (especially when cold), reduced engine performance, higher operating temperatures, or visible soot\/black streaks around the manifold-head joint. You may also notice a strong exhaust smell in the engine bay or bilge.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow does this aftermarket gasket compare to the OEM part?\u003c\/summary\u003e\n  \u003cp\u003eThis is an aftermarket component engineered to meet or exceed OEM specifications. It is made from a comparable high-quality composite material to ensure a durable, long-lasting seal. It offers a cost-effective solution without compromising on quality or performance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShould I use sealant with this gasket?\u003c\/summary\u003e\n  \u003cp\u003eThis type of composite gasket is typically designed to be installed dry. Applying sealants can sometimes interfere with its ability to seal correctly. Always consult your engine's service manual for the specific procedure and recommendations for your model.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I reuse the original manifold bolts?\u003c\/summary\u003e\n  \u003cp\u003eIt is strongly recommended to use new bolts, particularly if the old ones show any signs of corrosion, rust, or stretching. Manifold bolts endure extreme heat cycles and can lose their tensile strength. Always tighten to the manufacturer's specified torque in the correct sequence.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, all parts are batch-inspected for consistency and quality.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free, and expedited options will appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n  \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. If any issues arise, contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images and specifications against your original part before purchasing. If anything differs—even if your model is listed as compatible—do not install.\u003c\/li\u003e\n  \u003cli\u003eThis is a high-quality aftermarket replacement component, not an OEM part.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety, performance, and to prevent damage to your engine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — We offer free standard delivery to most regions, with typical transit times of 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Our direct-sourcing model ensures fair pricing without compromising on materials or quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50593339539771,"sku":"27-68715","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/27-68715_62347e8e-5f38-4b75-a478-27178fa52b3d.jpg?v=1758250825"},{"product_id":"carburetor-mounting-gasket-fits-mercruiser-rochester-mercarb-2bbl-replaces-27-8079821","title":"Carburetor Mounting Gasket – Fits MerCruiser Rochester \u0026 MerCarb 2BBL (Replaces 27-8079821)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eCarburetor Mounting Gasket\u003c\/strong\u003e creates a crucial seal between the carburetor base and the intake manifold. It is designed to fit a wide range of MerCruiser 3.0L, 4.3L, 5.0L, 5.7L, and 6.2L inboard and sterndrive engines that utilize Rochester and MerCarb 2-barrel carburetors.\u003c\/p\u003e\n\u003cp\u003eThis part serves as a direct replacement for multiple OEM and aftermarket part numbers, ensuring broad compatibility for various engine models within the MerCruiser line.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls between the carburetor base and the intake manifold.\u003c\/li\u003e\n\u003cli\u003eEngineered for gasoline marine environments.\u003c\/li\u003e\n\u003cli\u003ePrevents vacuum leaks and ensures proper air-fuel mixture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e27-807982\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e27-807982B\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e27-70143\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e27-701431\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e27-2770143\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e27-2770143B1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-0994-9\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eRed Rhino\u003c\/td\u003e\n        \u003ctd\u003eREC27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMerCruiser Applications:\u003c\/b\u003e This gasket fits various sterndrive and inboard engines, primarily those equipped with 2-barrel carburetors from the late 1990s to current models.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.0L GM 181 I\/L4\u003c\/td\u003e\n        \u003ctd\u003e135\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e0L097000 through current\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e4.3L (GEN+) 2BBL GM 262 V-6\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1998 (0L010044–0M614999)\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e4.3L CARB ALPHA\/BRAVO\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e0M615000–0W300012\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e4.3LH (GEN+) 4BBL GM 262 V-6\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1998 (0L010044–0M614999)\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.0L 2BBL GM 305 V-8\u003c\/td\u003e\n        \u003ctd\u003e220\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1998–2001 (0L015751-0M599999)\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.0L CARB ALPHA\/BRAVO\u003c\/td\u003e\n        \u003ctd\u003e220\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e0M600000 through current\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.0L MPI ALPHA\/BRAVO\u003c\/td\u003e\n        \u003ctd\u003e220\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.7L 2BBL GM 350 V-8\u003c\/td\u003e\n        \u003ctd\u003e250\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1996–2001\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.7L CARB ALPHA\/BRAVO\u003c\/td\u003e\n        \u003ctd\u003e250\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e0M600000 through current\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.7L CARB MIE\u003c\/td\u003e\n        \u003ctd\u003e250\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.7L CARB SKI\u003c\/td\u003e\n        \u003ctd\u003e250\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e5.7L MPI MIE\/HORIZON\u003c\/td\u003e\n        \u003ctd\u003e250\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e350 MAG MPI ALPHA\/BRAVO\u003c\/td\u003e\n        \u003ctd\u003e300\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e350 MAG MPI MIE\/HORIZON\u003c\/td\u003e\n        \u003ctd\u003e300\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e377 MAG MPI BRAVO\u003c\/td\u003e\n        \u003ctd\u003e320\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e6.2L MPI MIE\/HORIZON\u003c\/td\u003e\n        \u003ctd\u003e320\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003eMX 6.2L MPI BRAVO\u003c\/td\u003e\n        \u003ctd\u003e320\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003eMX 6.2L MPI MIE\/HORIZON\u003c\/td\u003e\n        \u003ctd\u003e320\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e3.0L TKS Plus\u003c\/td\u003e\n        \u003ctd\u003e135\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1G404114 \u0026amp; Up\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e350 (4BBL) Crate Engine\u003c\/td\u003e\n        \u003ctd\u003e300\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003e383 MAG STROKER\u003c\/td\u003e\n        \u003ctd\u003e350\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1G400000 \u0026amp; Up\u003c\/td\u003e\n        \u003ctd\u003e27-8079821\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eCarburetor Mounting Gasket\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eBetween carburetor base and intake manifold\u003c\/dd\u003e\n \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003ePaper\/Composite\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e6.0\" H x 7.5\" W x 0.13\" L\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Carburetor Mounting Gasket (27-8079821)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and ensure the engine is cool before starting.\u003c\/li\u003e\n \u003cli\u003eShut off the fuel supply and place absorbent rags around the carburetor to catch any spillage.\u003c\/li\u003e\n \u003cli\u003eCarefully disconnect fuel lines, throttle linkages, and any vacuum hoses connected to the carburetor. Label them to ensure correct reassembly.\u003c\/li\u003e\n \u003cli\u003eRemove the mounting nuts or bolts securing the carburetor to the intake manifold.\u003c\/li\u003e\n \u003cli\u003eGently lift the carburetor off the manifold and set it aside. Remove and discard the old gasket.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean both the carburetor's base and the intake manifold's mounting surface. Ensure they are completely free of old gasket material, sealant, and debris.\u003c\/li\u003e\n \u003cli\u003ePosition the new gasket onto the intake manifold, aligning it carefully with the mounting studs or bolt holes.\u003c\/li\u003e\n \u003cli\u003eLower the carburetor back onto the new gasket, ensuring it is seated correctly.\u003c\/li\u003e\n \u003cli\u003eTighten the mounting nuts or bolts in a crisscross pattern to the manufacturer's recommended torque specification to ensure an even seal. Do not overtighten.\u003c\/li\u003e\n \u003cli\u003eReconnect all fuel lines, linkages, and hoses.\u003c\/li\u003e\n \u003cli\u003eTurn the fuel supply back on, reconnect the battery, and carefully check for any fuel or vacuum leaks before starting the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I know if my carburetor gasket is failing?\u003c\/summary\u003e\n \u003cp\u003eCommon signs include a rough idle, engine stalling, vacuum leaks (often identifiable by a hissing sound near the carburetor base), reduced fuel economy, or visible fuel leaking around the carburetor.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eCan this gasket be reused?\u003c\/summary\u003e\n \u003cp\u003eNo. It is strongly recommended to use a new gasket every time the carburetor is removed. Reusing an old, compressed gasket can lead to improper sealing, causing vacuum or fuel leaks.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDoes this gasket require any sealant?\u003c\/summary\u003e\n \u003cp\u003eGenerally, this type of gasket is designed for a dry installation. Applying sealant can interfere with a proper seal or cause the gasket to degrade prematurely. Always consult your engine's service manual for specific recommendations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the main difference between this gasket and an OEM part?\u003c\/summary\u003e\n \u003cp\u003eThis aftermarket gasket is manufactured to meet or exceed OEM specifications for fit, material, and performance. It provides a reliable, long-lasting seal at a more competitive price point.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should this gasket be replaced?\u003c\/summary\u003e\n \u003cp\u003eThe gasket should be replaced whenever the carburetor is removed for service or if symptoms of a leak appear. There is no fixed time-based replacement interval; its replacement is dictated by service needs.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWill this fit a 4-barrel carburetor?\u003c\/summary\u003e\n \u003cp\u003eNo, this gasket is specifically designed for the base of MerCarb and Rochester 2-barrel (2BBL) carburetors. It will not fit 4-barrel models, which have a different bolt pattern and throttle bore layout.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50593339572539,"sku":"27-8079821","price":9.75,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/27-8079821_effb6420-5e9d-4c56-ae94-12ecd70ee7cd.jpg?v=1758250827"},{"product_id":"valve-cover-gasket-fits-volvo-penta-mercruiser-5-0l-5-7l-v8-engines-replaces-3852687-27-17467","title":"Valve Cover Gasket – Fits Volvo Penta \u0026 MerCruiser 5.0L\/5.7L V8 Engines (Replaces 3852687, 27-17467)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis aftermarket \u003cstrong\u003eValve Cover Gasket – Fits Volvo Penta \u0026amp; MerCruiser 5.0L\/5.7L V8 Engines (Replaces 3852687, 27-17467)\u003c\/strong\u003e is designed for a precise fit on a wide range of V8 marine engines with center bolt valve covers. It is compatible with Volvo Penta 5.0L\/5.7L models (1986–2018), MerCruiser 5.0L\/5.7L\/6.2L models (1987–2018), and OMC 5.0L\/5.7L models (1987–2006).\u003c\/p\u003e\n  \u003cp\u003eThis gasket serves as a direct interchange for Volvo Penta 3852687\/856072, MerCruiser 27-17467\/17467\/8M0150306, OMC 3852687\/913270\/0509120, Crusader 7231330, Sierra 18-0664, and FelPro 17931.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eFits V8 engines with center bolt valve cover designs (1987 and newer).\u003c\/li\u003e\n    \u003cli\u003eConstructed from high-quality PermaDry molded rubber for a durable, leak-proof seal.\u003c\/li\u003e\n    \u003cli\u003ePackage includes two gaskets for a complete engine service.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n          \u003ctd\u003e3852687 \/ 856072\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e27-17467 \/ 17467 \/ 8M0150306\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eOMC\u003c\/td\u003e\n          \u003ctd\u003e3852687 \/ 913270 \/ 0509120\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eCrusader\u003c\/td\u003e\n          \u003ctd\u003e7231330\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSierra\u003c\/td\u003e\n          \u003ctd\u003e18-0664\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eFelPro\u003c\/td\u003e\n          \u003ctd\u003e17931\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n  \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n  \u003cp\u003e\u003cb\u003eVolvo Penta Fitment:\u003c\/b\u003e Covers a wide range of 5.0L and 5.7L V8 models from 1986 to 2018 with center bolt valve covers.\u003c\/p\u003e\n  \u003cp\u003e\u003cb\u003eMerCruiser Fitment:\u003c\/b\u003e Fits various 5.0L, 5.7L, and 6.2L V8 models from 1987 to 2018, including Magnum and Scorpion series with center bolt covers.\u003c\/p\u003e\n  \u003cp\u003e\u003cb\u003eOMC Fitment:\u003c\/b\u003e Compatible with 5.0L and 5.7L V8 models produced between 1987 and 2006.\u003c\/p\u003e\n  \u003cp\u003e\u003cb\u003eCrusader Fitment:\u003c\/b\u003e Applies to 5.0L and 5.7L GM-based V8 engines from 1987 onwards that use a center bolt valve cover design.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003eModel\u003c\/th\u003e\n          \u003cth\u003eRated HP\u003c\/th\u003e\n          \u003cth\u003eStroke\u003c\/th\u003e\n          \u003cth\u003eYears\u003c\/th\u003e\n          \u003cth\u003eOEM Part No.\u003c\/th\u003e\n          \u003cth\u003eNotes\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0-BY\u003c\/td\u003e\n\u003ctd\u003e190-220\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0-EF\u003c\/td\u003e\n\u003ctd\u003e190-220\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0-WT\u003c\/td\u003e\n\u003ctd\u003e190-220\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0Gi\u003c\/td\u003e\n\u003ctd\u003e190-225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0GL\u003c\/td\u003e\n\u003ctd\u003e190-220\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0GS\u003c\/td\u003e\n\u003ctd\u003e190-220\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0GX\u003c\/td\u003e\n\u003ctd\u003e190-220\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0OSi\u003c\/td\u003e\n\u003ctd\u003e190-220\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.7-BY\u003c\/td\u003e\n\u003ctd\u003e250-270\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.7Gi\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.7GL\u003c\/td\u003e\n\u003ctd\u003e215\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.7GS\u003c\/td\u003e\n\u003ctd\u003e250-270\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.7GXi\u003c\/td\u003e\n\u003ctd\u003e320\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.7OSi\u003c\/td\u003e\n\u003ctd\u003e250-270\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAQ211A\u003c\/td\u003e\n\u003ctd\u003e210\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAQ231A, AQ231B\u003c\/td\u003e\n\u003ctd\u003e229-231\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eAQ271C, AQ271D\u003c\/td\u003e\n\u003ctd\u003e270-275\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eBB231A\u003c\/td\u003e\n\u003ctd\u003e229-231\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eBB261A\u003c\/td\u003e\n\u003ctd\u003e260\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e500A, 500B\u003c\/td\u003e\n\u003ctd\u003e187\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e501A, 501B\u003c\/td\u003e\n\u003ctd\u003e187\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e570A\u003c\/td\u003e\n\u003ctd\u003e245\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e570DP\u003c\/td\u003e\n\u003ctd\u003e245\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e571\u003c\/td\u003e\n\u003ctd\u003e273\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e572A\u003c\/td\u003e\n\u003ctd\u003e225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eV8-225-C-A, V8-225-C-B\u003c\/td\u003e\n\u003ctd\u003e225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eV8-225-CE-A, V8-225-CE-B\u003c\/td\u003e\n\u003ctd\u003e225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eV8-270-A, V8-270-C-A, V8-270-C-B\u003c\/td\u003e\n\u003ctd\u003e270\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eV8-270-CE-A, V8-270-CE-B, V8-270-E-A\u003c\/td\u003e\n\u003ctd\u003e270\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eV8-300-A, V8-300-C-A, V8-300-C-B\u003c\/td\u003e\n\u003ctd\u003e300\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eV8-300-CE-A, V8-300-CE-B, V8-300-E-A\u003c\/td\u003e\n\u003ctd\u003e300\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eV8-320-A, V8-320-A-A\u003c\/td\u003e\n\u003ctd\u003e320\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eV8-320-C-A, V8-320-C-B\u003c\/td\u003e\n\u003ctd\u003e320\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eV8-320-CE-A, V8-320-CE-B, V8-320-E-A\u003c\/td\u003e\n\u003ctd\u003e320\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–2018\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003e180-230\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e27-17467\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.0LX\u003c\/td\u003e\n\u003ctd\u003e205-230\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e27-17467\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e230-260\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e27-17467\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L Bravo\u003c\/td\u003e\n\u003ctd\u003e240-270\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e27-17467\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L Blue Water Inboard\u003c\/td\u003e\n\u003ctd\u003e250-260\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e27-17467\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L Comp Ski\u003c\/td\u003e\n\u003ctd\u003e250-260\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e27-17467\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e300 MR\/TR\u003c\/td\u003e\n\u003ctd\u003e300\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e27-17467\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e350 Magnum\u003c\/td\u003e\n\u003ctd\u003e250-265\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e27-17467\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e350 Magnum Tournament Ski\u003c\/td\u003e\n\u003ctd\u003e240-270\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e27-17467\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eBlack Scorpion\u003c\/td\u003e\n\u003ctd\u003e315\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e27-17467\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e315-320\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e27-17467\u003c\/td\u003e\n\u003ctd\u003eFor center bolt valve covers\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eOMC\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003e175-225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eOMC\u003c\/td\u003e\n\u003ctd\u003e5.0L High Output\u003c\/td\u003e\n\u003ctd\u003e190-225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eOMC\u003c\/td\u003e\n\u003ctd\u003e5.0L 305 V8\u003c\/td\u003e\n\u003ctd\u003e175-225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eOMC\u003c\/td\u003e\n\u003ctd\u003e5.0L 307 OHV V8\u003c\/td\u003e\n\u003ctd\u003e175-225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eOMC\u003c\/td\u003e\n\u003ctd\u003e5.7L V8\u003c\/td\u003e\n\u003ctd\u003e250-260\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eOMC\u003c\/td\u003e\n\u003ctd\u003e250 King Cobra\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2006\u003c\/td\u003e\n\u003ctd\u003e3852687\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eCrusader\u003c\/td\u003e\n\u003ctd\u003e5.0L\/5.7L GM V8\u003c\/td\u003e\n\u003ctd\u003e215-350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–2018\u003c\/td\u003e\n\u003ctd\u003e7231330\u003c\/td\u003e\n\u003ctd\u003eCenter bolt valve covers\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eValve Cover Gasket\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eCenter Bolt Design Valve Covers\u003c\/dd\u003e\n    \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n    \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMolded Rubber (PermaDry)\u003c\/dd\u003e\n    \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e66.0cm L x 28.0cm W x 1.0cm H\u003c\/dd\u003e\n    \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eFor center bolt valve cover design (1987 and newer V8 engines)\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/section\u003e\n  \n\u003csection\u003e\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Valve Cover Gasket (3852687)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eDisconnect the battery before beginning work.\u003c\/li\u003e\n    \u003cli\u003eRemove any components obstructing access to the valve covers, such as brackets, hoses, or wiring.\u003c\/li\u003e\n    \u003cli\u003eUnscrew the center bolts holding the valve cover in place. Note their positions if they are different lengths.\u003c\/li\u003e\n    \u003cli\u003eGently tap the valve cover with a rubber mallet to break the seal, then lift it off. Avoid prying, which can damage the surfaces.\u003c\/li\u003e\n    \u003cli\u003eRemove the old gasket and any old sealant or residue from both the cylinder head and the valve cover. A plastic scraper and degreaser are recommended.\u003c\/li\u003e\n    \u003cli\u003eEnsure the mating surfaces are completely clean, dry, and free of oil before proceeding.\u003c\/li\u003e\n    \u003cli\u003ePress the new gasket firmly into the channel on the valve cover. Ensure it is seated evenly all the way around.\u003c\/li\u003e\n    \u003cli\u003eCarefully place the valve cover back onto the cylinder head, aligning the bolt holes.\u003c\/li\u003e\n    \u003cli\u003eHand-tighten the bolts first, then torque them to the manufacturer's specification in a crisscross pattern to ensure even pressure. Do not overtighten.\u003c\/li\u003e\n    \u003cli\u003eReconnect any components that were removed and start the engine to check for leaks.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I know if my engine uses center bolt valve covers?\u003c\/summary\u003e\n    \u003cp\u003eCenter bolt valve covers, common on 1987 and newer GM V8 engines, have four bolts located in the center of the cover. Older engines typically have perimeter bolts along the outer edge. Visually inspect your current valve covers to confirm the bolt pattern before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the common signs of a failing valve cover gasket?\u003c\/summary\u003e\n    \u003cp\u003eSymptoms include visible oil leaks around the valve cover, a burning oil smell from drips onto hot engine parts, low engine oil levels, and a dirty or oil-soaked valve cover area. If you notice any of these, it's time to inspect the gasket.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan these gaskets be reused?\u003c\/summary\u003e\n    \u003cp\u003eNo. These are single-use gaskets. Reusing a valve cover gasket, especially a molded rubber one, will almost certainly result in leaks as it has already been compressed and heat-cycled.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs sealant required for installation?\u003c\/summary\u003e\n    \u003cp\u003eGenerally, these PermaDry molded rubber gaskets are designed to be installed dry without any additional sealant. However, it is best practice to apply a small dab of RTV sealant at any sharp corners or joints, such as where the intake manifold meets the cylinder head.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n    \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n    \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n    \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cb\u003ePro-Grade Standards\u003c\/b\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eFast Global Fulfillment\u003c\/b\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eManufacturer-Direct Value\u003c\/b\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50593340457275,"sku":"17931","price":20.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17931_158323b8-9796-4c49-975b-96ae92016f8b.jpg?v=1758250870"},{"product_id":"oil-filter-fits-mercruiser-volvo-penta-omc-crusader-replaces-35-06003-3852030","title":"Oil Filter - Fits Mercruiser, Volvo Penta, OMC, Crusader (Replaces 35-06003, 3852030)","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis high-performance \u003cstrong\u003eOil Filter - Fits Mercruiser, Volvo Penta, OMC, Crusader (Replaces 35-06003, 3852030)\u003c\/strong\u003e is engineered for a wide range of gasoline marine engines. It is compatible with most Mercruiser V6 and V8 models (1977–Present) and Volvo Penta marine engines (1980–Present), including 3.0L, 4.3L, 5.0L, 5.7L, 6.2L, 7.4L, 8.1L, and 8.2L variants.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Mercruiser 35-866340Q03, Volvo Penta 3852030, Indmar 501001, Pleasurecraft R077002, Crusader 201104, and OMC\/Johnson\/Evinrude 173233\/502901 series part numbers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEasy spin-on installation for quick maintenance.\u003c\/li\u003e\n\u003cli\u003eDurable steel housing protects against corrosion in marine environments.\u003c\/li\u003e\n\u003cli\u003eDesigned for use with gasoline-fueled V6 and V8 marine engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e35-866340Q03 \/ 866340Q03 \/ 802885Q \/ 802885T\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e3852030 \/ 3852412 \/ 835440\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eIndmar\u003c\/td\u003e\n        \u003ctd\u003e501001 \/ 872023\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePleasurecraft\u003c\/td\u003e\n        \u003ctd\u003eR077002\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCrusader\u003c\/td\u003e\n        \u003ctd\u003e201104\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\/Johnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e173233 \/ 502901\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eMercruiser Applications:\u003c\/b\u003e Suitable for most 4-stroke gasoline V6 and V8 engines from 1977 to present.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eVolvo Penta Applications:\u003c\/b\u003e Fits a wide range of gasoline engines from 1980 to present.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOther Applications:\u003c\/b\u003e Also fits various V6\/V8 engines from Indmar, Pleasurecraft, Crusader, and OMC.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e3.0L Inline 4 Cylinder\u003c\/td\u003e\n        \u003ctd\u003e135-140\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1977–Present\u003c\/td\u003e\n        \u003ctd\u003e35-866340Q03\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e4.3L V6\u003c\/td\u003e\n        \u003ctd\u003e180-225\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1987–Present\u003c\/td\u003e\n        \u003ctd\u003e35-866340Q03\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e5.0L V8 (305 cu in)\u003c\/td\u003e\n        \u003ctd\u003e220-260\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983–Present\u003c\/td\u003e\n        \u003ctd\u003e35-866340Q03\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e5.7L V8 (350 cu in)\u003c\/td\u003e\n        \u003ctd\u003e220-320\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983–Present\u003c\/td\u003e\n        \u003ctd\u003e35-866340Q03\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e6.2L V8 (377 cu in)\u003c\/td\u003e\n        \u003ctd\u003e320-430\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2010–Present\u003c\/td\u003e\n        \u003ctd\u003e35-866340Q03\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e7.4L V8 (454 cu in)\u003c\/td\u003e\n        \u003ctd\u003e330-385\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983–Present\u003c\/td\u003e\n        \u003ctd\u003e35-866340Q03\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e8.1L V8 (496 cu in)\u003c\/td\u003e\n        \u003ctd\u003e370-420\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2000–Present\u003c\/td\u003e\n        \u003ctd\u003e35-866340Q03\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e8.2L V8 (502 cu in)\u003c\/td\u003e\n        \u003ctd\u003e380-430\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983–Present\u003c\/td\u003e\n        \u003ctd\u003e35-866340Q03\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e3.0L\u003c\/td\u003e\n        \u003ctd\u003e130-140\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–Present\u003c\/td\u003e\n        \u003ctd\u003e3852030\/3852412\/835440\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e4.3L\u003c\/td\u003e\n        \u003ctd\u003e180-225\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–Present\u003c\/td\u003e\n        \u003ctd\u003e3852030\/3852412\/835440\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e5.0L\u003c\/td\u003e\n        \u003ctd\u003e220-270\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–Present\u003c\/td\u003e\n        \u003ctd\u003e3852030\/3852412\/835440\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e5.7L\u003c\/td\u003e\n        \u003ctd\u003e220-320\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–Present\u003c\/td\u003e\n        \u003ctd\u003e3852030\/3852412\/835440\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e6.2L\u003c\/td\u003e\n        \u003ctd\u003e320-430\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2010–Present\u003c\/td\u003e\n        \u003ctd\u003e3852030\/3852412\/835440\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e7.4L\u003c\/td\u003e\n        \u003ctd\u003e330-385\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–Present\u003c\/td\u003e\n        \u003ctd\u003e3852030\/3852412\/835440\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e8.1L\u003c\/td\u003e\n        \u003ctd\u003e370-420\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2000–Present\u003c\/td\u003e\n        \u003ctd\u003e3852030\/3852412\/835440\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e8.2L\u003c\/td\u003e\n        \u003ctd\u003e380-430\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–Present\u003c\/td\u003e\n        \u003ctd\u003e3852030\/3852412\/835440\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eIndmar\u003c\/td\u003e\n        \u003ctd\u003eV8 engines\u003c\/td\u003e\n        \u003ctd\u003eVarious\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e501001\/872023\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePleasurecraft\u003c\/td\u003e\n        \u003ctd\u003eV8 engines\u003c\/td\u003e\n        \u003ctd\u003eVarious\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eR077002\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCrusader\u003c\/td\u003e\n        \u003ctd\u003eV8 engines\u003c\/td\u003e\n        \u003ctd\u003eVarious\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e201104\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\/Johnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003eV6\/V8 engines\u003c\/td\u003e\n        \u003ctd\u003eVarious\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e173233\/502901\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eOil Filter\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eSpin-on\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDirect thread\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eSteel\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eWhite\/Blue (varies by manufacturer)\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e10.5\" x 10.0\" x 9.0\"\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eThreaded\u003c\/dd\u003e\n  \u003cdt\u003eThread Size\u003c\/dt\u003e\n\u003cdd\u003e13\/16\" x 16 NPT\u003c\/dd\u003e\n  \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eVaries by manufacturer (typically 1 year)\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eCommon marine engine oil filter for V6\/V8 petrol applications\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1\u003c\/span\u003e x Oil Filter (varies by manufacturer)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003ePlace an oil drip pan under the existing filter and drain plug.\u003c\/li\u003e\n  \u003cli\u003eRun the engine for a few minutes to warm the oil, then shut it off.\u003c\/li\u003e\n  \u003cli\u003eUnscrew the old filter counter-clockwise. Use an oil filter wrench if it's too tight to remove by hand.\u003c\/li\u003e\n  \u003cli\u003eClean the filter mounting surface on the engine block, ensuring the old gasket is not stuck to it.\u003c\/li\u003e\n  \u003cli\u003eLightly coat the gasket of the new filter with a thin film of clean engine oil.\u003c\/li\u003e\n  \u003cli\u003eScrew the new filter on by hand until the gasket makes contact with the mounting surface.\u003c\/li\u003e\n  \u003cli\u003eTighten the filter an additional 3\/4 to one full turn by hand. Do not overtighten.\u003c\/li\u003e\n  \u003cli\u003eRefill the engine with the manufacturer-recommended grade and quantity of oil.\u003c\/li\u003e\n  \u003cli\u003eStart the engine and carefully check for any leaks around the new filter. Shut off the engine and re-check the oil level.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if this filter fits my specific engine model?\u003c\/summary\u003e\n  \u003cp\u003eThe best way to ensure compatibility is to verify your engine model and year against the lists in the \"Engine \u0026amp; Model Compatibility\" section. Additionally, cross-reference the part number stamped on your old filter with the numbers in our \"Part Number Matrix.\"\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the difference between the white and blue filters?\u003c\/summary\u003e\n  \u003cp\u003eThe color of the filter housing (canister) varies by the specific aftermarket manufacturer but does not affect the fit or function. As long as the part number and specifications match, both are interchangeable.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should I change my marine oil filter?\u003c\/summary\u003e\n  \u003cp\u003eFor most marine gasoline engines, it's recommended to change the oil and filter every 100 hours of operation or annually, whichever comes first. Always consult your engine's service manual for the precise maintenance schedule.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing or clogged oil filter?\u003c\/summary\u003e\n  \u003cp\u003eSymptoms can include low oil pressure readings on your gauge, a decrease in engine performance, or an oil pressure warning light. If you notice any of these, inspect your oil system immediately.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I use this oil filter with synthetic marine oil?\u003c\/summary\u003e\n  \u003cp\u003eYes, this filter is compatible with conventional and synthetic gasoline engine oils, as long as the oil meets the specifications required by your engine manufacturer.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs a special tool required for installation?\u003c\/summary\u003e\n  \u003cp\u003eWhile the filter is designed to be hand-tightened, you may need an oil filter wrench to remove the old one, especially if it was overtightened. The new filter should not be installed with a wrench.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50593342980411,"sku":"35-06003","price":15.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/35-06003_a9b0f0cd-e737-45ab-9526-8f338bb4a403.jpg?v=1763089435"},{"product_id":"gearcase-seal-kit-fits-omc-johnson-evinrude-4-cylinder-stern-drives-replaces-982947","title":"Gearcase Seal Kit – Fits OMC\/Johnson\/Evinrude 4-Cylinder Stern Drives (Replaces 982947)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eGearcase Seal Kit\u003c\/strong\u003e provides all the necessary components to reseal the lower drive on OMC\/Johnson\/Evinrude 4-cylinder stern drives. It is specifically designed for 120, 140, and 400 series models, as well as 2.5L and 3.0L engines manufactured between 1981 and 1993 for Stringer\/800 Series applications. This kit is not compatible with Cobra Stern Drive models.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct replacement for multiple part numbers, including OMC 982947\/0982947, Sierra Marine 18-2664, SEI Marine 95-104-11K, Red Rhino OS-138\/OS-244, and GLM 87640.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation is highly recommended to ensure a proper seal and long-term performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e982947 \/ 0982947\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra Marine\u003c\/td\u003e\n        \u003ctd\u003e18-2664\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSEI Marine\u003c\/td\u003e\n        \u003ctd\u003e95-104-11K\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eRed Rhino\u003c\/td\u003e\n        \u003ctd\u003eOS-138 \/ OS-244\u003c\/td\u003e\n      \u003c\/tr\u003e\n\t  \u003ctr\u003e\n\t\t\u003ctd\u003eGLM\u003c\/td\u003e\n\t\t\u003ctd\u003e87640\u003c\/td\u003e\n\t  \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThe following table details compatibility with various OMC stern drive models. Verify your specific model and year range.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e120 Series\u003c\/td\u003e\n        \u003ctd\u003e120\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1981–1985\u003c\/td\u003e\n        \u003ctd\u003e982947\u003c\/td\u003e\n        \u003ctd\u003eStringer\/800 Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e140 Series\u003c\/td\u003e\n        \u003ctd\u003e140\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1981–1985\u003c\/td\u003e\n        \u003ctd\u003e982947\u003c\/td\u003e\n        \u003ctd\u003eStringer\/800 Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e400 Series\u003c\/td\u003e\n        \u003ctd\u003e140-170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1981–1985\u003c\/td\u003e\n        \u003ctd\u003e982947\u003c\/td\u003e\n        \u003ctd\u003eStringer\/800 Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e2.5L\u003c\/td\u003e\n        \u003ctd\u003e150-170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1981–1993\u003c\/td\u003e\n        \u003ctd\u003e982947\u003c\/td\u003e\n        \u003ctd\u003eStringer\/800 Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e3.0L\u003c\/td\u003e\n        \u003ctd\u003e180-225\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1981–1993\u003c\/td\u003e\n        \u003ctd\u003e982947\u003c\/td\u003e\n        \u003ctd\u003eStringer\/800 Series\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003eCobra (Small Hub)\u003c\/td\u003e\n        \u003ctd\u003eVarious\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1986–1989\u003c\/td\u003e\n        \u003ctd\u003e982947\u003c\/td\u003e\n        \u003ctd\u003eRed Rhino OS-244 equivalent\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eLower Drive Gearcase Seal Kit\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.44 lb (0.2 kg)\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e20.0″ L x 13.0″ W x 3.0″ H\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eFor Stringer\/800 Series stern drive applications\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eProfessional recommended\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eA comprehensive set of seals, O-rings, and gaskets for a complete lower gearcase reseal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eFor optimal results, we strongly recommend professional installation by a qualified marine mechanic. This ensures all components are seated correctly, torqued to manufacturer specifications, and tested for leaks. Always consult your engine’s official service manual for detailed procedures and safety precautions specific to your model.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this seal kit fits my stern drive?\u003c\/summary\u003e\u003cp\u003eCheck your engine model, series, and year against the compatibility table. This kit is for OMC\/Johnson\/Evinrude 4-cylinder, 120\/140\/400 series, 2.5L, and 3.0L models (1981–1993) using the Stringer\/800 Series drive. Visually comparing your old seals to our product images is also a good practice.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit fit OMC Cobra models?\u003c\/summary\u003e\u003cp\u003eOur data indicates this kit does not fit OMC Cobra Stern Drives. While some cross-references suggest compatibility with certain Cobra hubs (as Red Rhino OS-244), our primary fitment data excludes them. We recommend sourcing a Cobra-specific seal kit to ensure proper fit and function.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs my gearcase seals are failing?\u003c\/summary\u003e\u003cp\u003eCommon indicators include a milky, white or creamy appearance in your gear lube (indicating water intrusion), visible oil leaks around the propeller shaft or drive shaft housing, or a persistent low gear lube level without obvious external leaks.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should gearcase seals be replaced?\u003c\/summary\u003e\u003cp\u003eSeals should be inspected annually when you change your gear lube. We recommend replacing them every 3-5 years as part of preventative maintenance, or immediately if you notice any signs of leaks or water intrusion.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs everything I need for the job included?\u003c\/summary\u003e\u003cp\u003eThis kit includes the necessary seals, O-rings, and gaskets for the gearcase. However, it does not include gear lube, tools, or sealants\/adhesives that may be required by your service manual.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need special tools for this installation?\u003c\/summary\u003e\u003cp\u003eYes, specialized tools such as a bearing carrier retainer wrench, seal drivers, and a pressure\/vacuum tester are often required for a professional installation. Attempting the job without the correct tools can damage the new seals or the gearcase housing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50595370074427,"sku":"982947","price":49.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/982947_bf76d295-a5b4-4f7f-ba9f-08503f2a8f7b.jpg?v=1758323925"},{"product_id":"thermostat-gasket-fits-mercury-mercruiser-3-7l-224-cid-l4-replaces-27-89656-1","title":"Thermostat Gasket – Fits Mercury\/Mercruiser 3.7L 224 CID L4 (Replaces 27-89656-1)","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis replacement \u003cstrong\u003eThermostat Gasket\u003c\/strong\u003e is designed for Mercury\/Mercruiser 3.7L (224 CID) 4-cylinder engines, including models with ratings from 165 HP to 190 HP, manufactured between 1976 and 1989. It provides a reliable seal between the thermostat housing and the engine block, preventing coolant leaks.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for Mercury part numbers 27-89656-1, 27-896561, 76270T, and 99155T2, as well as GLM 32100 and Sierra 18-2555.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls directly between the thermostat housing and engine block.\u003c\/li\u003e\n\u003cli\u003eEngineered from high-quality composite gasket material for durability.\u003c\/li\u003e\n\u003cli\u003eEnsures a precise fit for specified marine 4-cylinder engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eSuperseded By\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e27-74830\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003e99155T2\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e27-896561\u003c\/td\u003e\n        \u003ctd\u003e99155T2\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e76270T\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e99155T2\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eCurrent OEM part number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e32100\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Cross-Reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-2555\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Cross-Reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e0508570\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eCross-reference only\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e0508576\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eCross-reference only\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e0508621\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eCross-reference only\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eOMC\u003c\/td\u003e\n        \u003ctd\u003e0508623\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003eCross-reference only\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Mercruiser models, this gasket is compatible with the 3.7L (224 CID) 4-cylinder series manufactured between 1976 and 1989.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003eMCM 470\u003c\/td\u003e\n        \u003ctd\u003e190\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1976–1982\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 27-74830\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e470\u003c\/td\u003e\n        \u003ctd\u003e190\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983–1984\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003eUsed with thermostat cover 89659A3\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e485\u003c\/td\u003e\n        \u003ctd\u003e185\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1982\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003eUsed with thermostat cover 89659A3\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e488\u003c\/td\u003e\n        \u003ctd\u003e185\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1983–1984\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003eUsed with thermostat cover 89659A3\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003e170\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–1986\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003eUsed with thermostat cover 89659A3\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e190 (4 cyl)\u003c\/td\u003e\n        \u003ctd\u003e190\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1985–1986\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003eUsed with thermostat cover 89659A3\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e165 (4 cyl)\u003c\/td\u003e\n        \u003ctd\u003e165\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1987\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003eUsed with thermostat cover 89659A3\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1987\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003eUsed with thermostat cover 89659A3\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e3.7L\u003c\/td\u003e\n        \u003ctd\u003e165\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1988–1989\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003eUsed with thermostat cover 89659A3\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e3.7LX\u003c\/td\u003e\n        \u003ctd\u003e180\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1988–1989\u003c\/td\u003e\n        \u003ctd\u003e27-89656-1\u003c\/td\u003e\n        \u003ctd\u003eUsed with thermostat cover 89659A3\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eThermostat Gasket\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eMarine 4-cylinder engines\u003c\/dd\u003e\n  \u003cdt\u003eInstallation Location\u003c\/dt\u003e\n\u003cdd\u003eBetween thermostat housing and engine block\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eComposite Gasket Material\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e1.06″ L x 7.5″ W x 6.0″ H\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.16 oz (4.5 g)\u003c\/dd\u003e\n  \u003cdt\u003eOEM Supersession\u003c\/dt\u003e\n\u003cdd\u003e27-74830 → 27-89656-1\/27-896561 → 99155T2\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Thermostat Gasket (Replaces 27-89656-1)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the boat's battery and drain the engine coolant to a level below the thermostat housing.\u003c\/li\u003e\n  \u003cli\u003eLocate and unbolt the thermostat housing cover from the engine block.\u003c\/li\u003e\n  \u003cli\u003eCarefully remove the old thermostat and gasket. Thoroughly clean both mating surfaces to remove any old gasket material or sealant residue.\u003c\/li\u003e\n  \u003cli\u003ePosition the new thermostat gasket correctly onto the engine block, aligning it with the bolt holes.\u003c\/li\u003e\n  \u003cli\u003eInstall the thermostat, ensuring it is oriented correctly according to your service manual.\u003c\/li\u003e\n  \u003cli\u003eRe-install the housing cover and tighten the bolts to the manufacturer's recommended torque specification in a star or crisscross pattern.\u003c\/li\u003e\n  \u003cli\u003eRefill the cooling system with the appropriate coolant, reconnect the battery, and start the engine to check for any leaks around the housing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if my thermostat gasket is failing?\u003c\/summary\u003e\u003cp\u003eCommon signs of a failed thermostat gasket include coolant leaks visible around the thermostat housing, engine overheating, or erratic temperature gauge readings. A visual inspection may reveal coolant stains or drips in the area.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use sealant with this gasket?\u003c\/summary\u003e\u003cp\u003eThis composite gasket is designed to create a seal when installed dry. Applying additional sealants is generally not recommended as it can interfere with the seal, unless explicitly required by your engine’s service manual.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShould I replace my thermostat at the same time?\u003c\/summary\u003e\u003cp\u003eYes, it is highly recommended to replace the thermostat whenever you replace the gasket. This ensures both components are new and function correctly together, preventing potential cooling system issues and saving you from performing the same repair twice.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is an OEM vs. Aftermarket part?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials, designed to offer the same performance and fit. Our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow much is shipping and how fast is it?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free to most locations. Expedited shipping options and exact costs will be displayed at checkout if available for your region.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis part is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused parts in their original condition. Please see our policy page or contact us for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images and specifications against your original part before purchasing. If anything differs—even if your model appears on a compatibility list—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement component, not an original equipment manufacturer (OEM) part.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and optimal performance. Improper installation can lead to engine damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — We offer free standard delivery to most regions with an average transit time of 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — By working directly with manufacturers, we provide fair pricing without compromising on materials or quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50596978131259,"sku":"27-89656-1","price":99.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/27-89656-1_5ee4b2bd-1b3c-4d8d-beda-272bf0b3a652.jpg?v=1758448544"},{"product_id":"6-mercruiser-spacer-kit-fits-v6-v8-marine-engines-replaces-93322a12-20985","title":"6\" Mercruiser Spacer Kit – Fits V6 \u0026 V8 Marine Engines (Replaces 93322A12, 20985)","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003e6\" Mercruiser Spacer Kit\u003c\/strong\u003e raises the exhaust elbow by 6 inches on Mercruiser V6 and V8 marine engines. It is designed specifically for \"wet joint\" exhaust systems, typically used on models from 1986–2001 (4.3L, 5.0L, 5.7L) and from 1986 to the present on big block engines (7.4L, 8.2L). It is not compatible with newer \"dry joint\" systems.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct replacement for Mercury\/Mercruiser parts 93322A12 and 93322A3; GLM parts 50600 and 50610; BARR part MC-20-93322A3; and Mercruiser part HOT20985.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls between the exhaust manifold and the riser\/elbow.\u003c\/li\u003e\n\u003cli\u003eEngineered for wet joint systems where water passes between the manifold and elbow.\u003c\/li\u003e\n\u003cli\u003eConstructed from heavy-duty cast iron for durability in marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mercruiser\u003c\/td\u003e\n        \u003ctd\u003e93322A12\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mercruiser\u003c\/td\u003e\n        \u003ctd\u003e93322A3\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003eHOT20985\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e50600\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e50610\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eBARR\u003c\/td\u003e\n        \u003ctd\u003eMC-20-93322A3\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis part is verified to work with BARR manifold part numbers MC-1-99798, MC-1-87114, and MC-1-89011 on compatible engines.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e4.3L\u003c\/td\u003e\n        \u003ctd\u003e175–205\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1986–2001\u003c\/td\u003e\n        \u003ctd\u003e93322A12\u003c\/td\u003e\n        \u003ctd\u003eFor wet joint systems with serial #0M614999 \u0026amp; below\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e5.0L\u003c\/td\u003e\n        \u003ctd\u003e200–320\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1986–2001\u003c\/td\u003e\n        \u003ctd\u003e93322A12\u003c\/td\u003e\n        \u003ctd\u003eFor wet joint systems with serial #0M599999 \u0026amp; below\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e5.7L\u003c\/td\u003e\n        \u003ctd\u003e200–320\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1986–2001\u003c\/td\u003e\n        \u003ctd\u003e93322A12\u003c\/td\u003e\n        \u003ctd\u003eFor wet joint systems with serial #0M599999 \u0026amp; below\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e7.4L (Big Block)\u003c\/td\u003e\n        \u003ctd\u003e330–370\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1986–Present\u003c\/td\u003e\n        \u003ctd\u003e93322A12\u003c\/td\u003e\n        \u003ctd\u003eFor wet joint systems\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercruiser\u003c\/td\u003e\n        \u003ctd\u003e8.2L (Big Block)\u003c\/td\u003e\n        \u003ctd\u003e380+\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1986–Present\u003c\/td\u003e\n        \u003ctd\u003e93322A12\u003c\/td\u003e\n        \u003ctd\u003eFor wet joint systems\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eMarine Exhaust Spacer Kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eBetween exhaust manifold and elbow\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003e\"Wet Joint\" (passes water between manifold and elbow)\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eCast Iron\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eRaw Metal\/Unpainted\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e6\" (152.4 mm) height\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e30 lbs (13.6 kg)\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eBolted connection\u003c\/dd\u003e\n  \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e3 years (manufacturer's warranty)\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eFor \"wet joint\" exhaust systems only\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Spacer Block (Cast Iron)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eEnsure the engine is completely cool and disconnect the battery for safety.\u003c\/li\u003e\n  \u003cli\u003eDrain water from the exhaust manifold according to your engine service manual.\u003c\/li\u003e\n  \u003cli\u003eCarefully unbolt and remove the exhaust elbow from the top of the manifold.\u003c\/li\u003e\n  \u003cli\u003eThoroughly clean both the manifold and elbow mating surfaces, removing all old gasket material.\u003c\/li\u003e\n  \u003cli\u003ePlace a new gasket on the manifold, position the 6\" spacer on top, place another new gasket on the spacer, and then reinstall the elbow.\u003c\/li\u003e\n  \u003cli\u003eInsert and hand-tighten the new, longer mounting bolts.\u003c\/li\u003e\n  \u003cli\u003eTorque the bolts to the manufacturer's recommended specification in a crisscross pattern.\u003c\/li\u003e\n  \u003cli\u003eReconnect any hoses, refill the cooling system, and reconnect the battery.\u003c\/li\u003e\n  \u003cli\u003eStart the engine and carefully check for any water or exhaust leaks around the new spacers.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWill this kit fit my \"dry joint\" Mercruiser engine?\u003c\/summary\u003e\n  \u003cp\u003eNo. This spacer kit is specifically for \"wet joint\" exhaust systems only. It will not fit \"dry joint\" manifolds, which typically have serial numbers beginning with OM, such as OM0XXXXXXX.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow can I tell if my system is \"wet joint\" or \"dry joint\"?\u003c\/summary\u003e\n  \u003cp\u003eWet joint systems, common from 1986 to the early 2000s, have a visible gasket and pass water between the manifold and elbow through openings in the mating surfaces. Dry joint systems (early 2000s to present) use a U-shaped connector pipe for water and have blocked-off mating surfaces with a different bolt pattern. Always check your serial number and visual configuration.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this kit include gaskets and mounting bolts?\u003c\/summary\u003e\n  \u003cp\u003eThis kit includes the two cast iron spacer blocks. Please refer to the \"What’s in the Box\" section for a complete list of included items. Gaskets and bolts are typically sold separately to ensure you get the correct hardware for your specific manifold and elbow combination.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs my existing spacers or manifold need replacement?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs of failure include water leaking externally from the gasket joints, water in the engine oil (indicating an internal leak), overheating, or visible cracks and corrosion on the cast iron components. Regular inspection is recommended, especially in saltwater environments.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n  \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\n  \u003cp\u003eCovered by a 3-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50597936038203,"sku":"HOT20985","price":364.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/HOT20985_23f5fb8a-8fcb-4f13-b780-0032650102c2.jpg?v=1758508281"},{"product_id":"water-pump-repair-kit-fits-mercruiser-v6-v8-engines-replaces-8m0142980-47-8m0142980","title":"Water Pump Repair Kit – Fits MerCruiser V6 \u0026 V8 Engines (Replaces 8M0142980, 47-8M0142980)","description":"\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis \u003cstrong\u003eWater Pump Repair Kit – Fits MerCruiser V6 \u0026amp; V8 Engines\u003c\/strong\u003e is designed for the new generation of Mercury MerCruiser V6 (3.4L) and V8 (4.6L) 4-stroke engines (175-300 HP) from 2020 and newer models.\u003c\/p\u003e\n  \u003cp\u003eIt serves as a direct aftermarket replacement for Mercury part numbers 8M0142980 and 47-8M0142980.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eEngine-mounted, belt-driven installation.\u003c\/li\u003e\n    \u003cli\u003eFeatures the updated design for modern V6 (3.4L) \u0026amp; V8 (4.6L) engines.\u003c\/li\u003e\n    \u003cli\u003eIncludes all necessary gaskets, seals, and impeller for a complete service.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e8M0142980\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e47-8M0142980\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n  \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n  \u003cp\u003eFor MerCruiser engines, please verify your specific model and production year against this list.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003eModel\u003c\/th\u003e\n          \u003cth\u003eRated HP\u003c\/th\u003e\n          \u003cth\u003eStroke\u003c\/th\u003e\n          \u003cth\u003eYears\u003c\/th\u003e\n          \u003cth\u003eOEM Part No.\u003c\/th\u003e\n          \u003cth\u003eNotes\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003eV6 (3.4L)\u003c\/td\u003e\n          \u003ctd\u003e175-300\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2020+\u003c\/td\u003e\n          \u003ctd\u003e8M0142980\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003eV8 (4.6L)\u003c\/td\u003e\n          \u003ctd\u003e175-300\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2020+\u003c\/td\u003e\n          \u003ctd\u003e8M0142980\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n    \u003cdd\u003eWater Pump Repair Kit\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n    \u003cdd\u003eEngine-mounted, belt-driven\u003c\/dd\u003e\n    \u003cdt\u003eWeight\u003c\/dt\u003e\n    \u003cdd\u003e3.2 oz (91 g)\u003c\/dd\u003e\n    \u003cdt\u003eProduct Dimensions\u003c\/dt\u003e\n    \u003cdd\u003e18.0\" L x 10.5\" W x 12.0\" H\u003c\/dd\u003e\n    \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n    \u003cdd\u003e\"NEW\" design for 175-300 HP V6 (3.4L) \u0026amp; V8 (4.6L) engines\u003c\/dd\u003e\n  \u003c\/dl\u003e\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x Water pump gasket\u003c\/li\u003e\n    \u003cli\u003e1 x Face plate\u003c\/li\u003e\n    \u003cli\u003e1 x Face plate gasket\u003c\/li\u003e\n    \u003cli\u003e1 x Key\u003c\/li\u003e\n    \u003cli\u003e1 x Impeller\u003c\/li\u003e\n    \u003cli\u003e1 x Face seal\u003c\/li\u003e\n    \u003cli\u003e1 x Drain plug seal\u003c\/li\u003e\n    \u003cli\u003e1 x Water pump gasket\u003c\/li\u003e\n    \u003cli\u003e1 x O-ring\u003c\/li\u003e\n    \u003cli\u003e1 x Actuator seal\u003c\/li\u003e\n    \u003cli\u003e1 x Face seal tool\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eDisconnect the battery and ensure the engine is completely cool before starting.\u003c\/li\u003e\n    \u003cli\u003eRelieve any pressure in the cooling system and have a container ready to catch draining coolant.\u003c\/li\u003e\n    \u003cli\u003eLocate the seawater pump assembly on the engine.\u003c\/li\u003e\n    \u003cli\u003eLoosen the serpentine belt tensioner and remove the belt from the pump pulley.\u003c\/li\u003e\n    \u003cli\u003eDisconnect the inlet and outlet hoses from the pump.\u003c\/li\u003e\n    \u003cli\u003eCarefully unbolt and remove the old pump assembly from its mounting bracket.\u003c\/li\u003e\n    \u003cli\u003eThoroughly clean the mounting surface on the engine, ensuring no old gasket material remains.\u003c\/li\u003e\n    \u003cli\u003eAssemble the new kit components, including the impeller, gaskets, and seals, into the housing.\u003c\/li\u003e\n    \u003cli\u003eMount the new water pump assembly and torque the mounting bolts to the manufacturer's recommended specification.\u003c\/li\u003e\n    \u003cli\u003eReconnect the water hoses and reinstall the serpentine belt, verifying correct tension.\u003c\/li\u003e\n    \u003cli\u003eRefill the cooling system with the specified coolant type.\u003c\/li\u003e\n    \u003cli\u003eReconnect the battery, start the engine, and meticulously check for any leaks and proper water flow.\u003c\/li\u003e\n  \u003c\/ol\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhich MerCruiser engines is this kit for?\u003c\/summary\u003e\n    \u003cp\u003eThis kit is specifically designed for the \"NEW\" MerCruiser V6 (3.4L) and V8 (4.6L) 4-stroke engines (175-300 HP) manufactured from 2020 onward.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a complete kit for the repair?\u003c\/summary\u003e\n    \u003cp\u003eYes, it includes the impeller, face plate, gaskets, seals, and other necessary components for a standard water pump service. Refer to the \"What’s in the Box\" section for a full list of contents.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are signs my water pump is failing?\u003c\/summary\u003e\n    \u003cp\u003eCommon symptoms include engine overheating at idle or low speeds, a steady drip of coolant or water from the pump's weep hole, or a grinding\/whining noise emanating from the pump area.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should the water pump impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eFor optimal reliability, most marine mechanics recommend inspecting the impeller annually and replacing it every 2–3 years or 200–300 service hours, depending on operating conditions (especially in saltwater or high-debris environments).\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n    \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n    \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n    \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50602582049083,"sku":"47-8M0142980","price":99.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/47-8M0142980_b3ed2a23-2871-4b0b-a945-89ebd95ca059.jpg?v=1758594834"},{"product_id":"fuel-filter-kit-fits-mercruiser-2-5l-3-0l-3-7l-4-3l-sterndrive-engines-replaces-803897q1-8m0046752","title":"Fuel Filter Kit for MerCruiser Sterndrive Engines – Replaces 35-803897Q1 and 8M0046752","description":"\u003csection\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003efuel filter kit\u003c\/strong\u003e is intended for gasoline-fueled MerCruiser sterndrive engine applications that use a mechanical fuel pump with an internal filter in the lower canister. It is listed for selected 2.5L, 3.0L, 3.7L, and 4.3L applications, subject to the engine model, serial number, fuel-pump configuration, and original part number.\u003c\/p\u003e\n\u003cp\u003eThe kit is offered as a replacement for the listed MerCruiser references and may also correspond to selected aftermarket and Volvo Penta references shown below. Always compare the original filter, fuel-pump configuration, and part number before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInstalls inside the lower canister of a compatible mechanical fuel pump.\u003c\/li\u003e\n  \u003cli\u003eDesigned for gasoline marine sterndrive applications.\u003c\/li\u003e\n  \u003cli\u003eIncludes the filter element, support spring, and rubber sealing rings or gaskets shown in the package list.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThe following numbers are reference and cross-reference information for fitment comparison. A number match should be confirmed against the complete engine and fuel-pump configuration.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e35-803897Q1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e8M0046752 \/ 35-8M0046752\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e803897K1 \/ 803897Q1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e11004T1 \/ 11004T2 \/ 11004A1 \/ 11004Q2 \/ 11004\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-7784\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-37821\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3855104\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e24850\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine and Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eCompatibility depends on the exact engine model, serial-number range, and whether the engine is equipped with the applicable mechanical fuel pump. The table below summarizes the listed application information; it is not a substitute for comparing the original part.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears or Serial Condition\u003c\/th\u003e\n\u003cth\u003eReference Part No.\u003c\/th\u003e\n\u003cth\u003eApplication Notes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e2.5L\u003c\/td\u003e\n\u003ctd\u003e120\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–1990s; serial no. 6229718 and later\u003c\/td\u003e\n\u003ctd\u003e35-803897Q1\u003c\/td\u003e\n\u003ctd\u003eFor configurations with the filter mounted in the mechanical fuel pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e3.0L\u003c\/td\u003e\n\u003ctd\u003e140 \/ LX\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980s–2000s; serial no. 6229718 and later\u003c\/td\u003e\n\u003ctd\u003e35-803897Q1\u003c\/td\u003e\n\u003ctd\u003eFor configurations with the filter mounted in the mechanical fuel pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e3.7L\u003c\/td\u003e\n\u003ctd\u003e165, 170, 180, 190 C.I.\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial no. 6916779 and later\u003c\/td\u003e\n\u003ctd\u003e35-803897Q1\u003c\/td\u003e\n\u003ctd\u003eFor configurations with the filter mounted in the mechanical fuel pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eMC224\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial no. 6218037 and later\u003c\/td\u003e\n\u003ctd\u003e35-803897Q1\u003c\/td\u003e\n\u003ctd\u003eListed for MC224 C.I. engines with the applicable fuel-pump configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eGM 262 C.I. \/ 4.3L\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial no. 0A331455 and later\u003c\/td\u003e\n\u003ctd\u003e35-803897Q1\u003c\/td\u003e\n\u003ctd\u003eListed for models using the applicable Carter fuel pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eAlpha One sterndrive applications\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eConfiguration dependent\u003c\/td\u003e\n\u003ctd\u003e35-803897Q1\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine and mechanical fuel-pump configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003eSelected compatible models\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eConfiguration dependent\u003c\/td\u003e\n\u003ctd\u003e3855104\u003c\/td\u003e\n\u003ctd\u003eConfirm that the engine uses the applicable mechanical fuel pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eMechanical fuel-pump filter kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation Location\u003c\/dt\u003e\n\u003cdd\u003eInside the lower canister of a compatible mechanical fuel pump\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n  \u003cdt\u003eFilter Type\u003c\/dt\u003e\n\u003cdd\u003eInternal fuel filter element\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eInternal filter assembly for the applicable fuel pump\u003c\/dd\u003e\n  \u003cdt\u003eApproximate Weight\u003c\/dt\u003e\n\u003cdd\u003e0.06 kg (0.13 lb)\u003c\/dd\u003e\n  \u003cdt\u003ePackage Contents\u003c\/dt\u003e\n\u003cdd\u003eFilter element, support spring, and three rubber rings or gaskets\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Filter element\u003c\/li\u003e\n  \u003cli\u003e1 × Support spring\u003c\/li\u003e\n  \u003cli\u003e3 × Rubber rings or gaskets\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eMake sure the engine is cool and disconnect the battery. Follow the service manual's procedure for relieving fuel-system pressure.\u003c\/li\u003e\n  \u003cli\u003ePlace a suitable container or absorbent material below the mechanical fuel pump to catch spilled fuel.\u003c\/li\u003e\n  \u003cli\u003eRemove the downward-facing canister cap from the bottom of the compatible mechanical fuel pump.\u003c\/li\u003e\n  \u003cli\u003eRemove the old filter, spring, and sealing rings or gaskets, and note their orientation.\u003c\/li\u003e\n  \u003cli\u003eClean the inside of the canister and the sealing surfaces without introducing debris into the fuel system.\u003c\/li\u003e\n  \u003cli\u003eInstall the new spring and filter element in the same orientation as the removed components.\u003c\/li\u003e\n  \u003cli\u003eReplace the old sealing rings or gaskets with the included components.\u003c\/li\u003e\n  \u003cli\u003eReinstall the canister cap securely without overtightening.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery, prime the fuel system as required, and inspect carefully for leaks before operating the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting and FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow can I confirm that this kit fits my engine?\u003c\/summary\u003e\u003cp\u003eCompare the original filter and fuel-pump configuration with the package photographs and specifications, then match the engine model, serial-number range, and original part number against the information above. This kit is intended only for compatible mechanical fuel pumps that house the filter in the lower canister.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common symptoms of a restricted fuel filter?\u003c\/summary\u003e\u003cp\u003ePossible symptoms include difficult starting, rough idle, hesitation, misfiring, loss of power, or stalling. These symptoms can have other causes, so inspect the complete fuel system and follow the engine manufacturer's diagnostic procedure.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the filter be replaced?\u003c\/summary\u003e\u003cp\u003eReplacement timing depends on the engine manufacturer's maintenance schedule, fuel quality, operating conditions, and the condition of the existing filter. Replace it when required by the service schedule or when inspection or diagnosis indicates contamination or restriction.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a complete installation kit?\u003c\/summary\u003e\u003cp\u003eThe package is listed to include one filter element, one support spring, and three rubber rings or gaskets. Confirm the arrangement and sealing requirements for your specific mechanical fuel pump before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement kit. The reference numbers are provided for fitment comparison and identification; MerCruiser, Sierra, Mallory, Volvo Penta, and GLM are referenced brands and are not claims that this kit is manufactured by those companies.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat should I do if the parts do not match?\u003c\/summary\u003e\u003cp\u003eDo not force installation or operate the engine with an incorrect filter or seal. Stop and compare the original part, fuel-pump model, engine serial number, and applicable reference number before proceeding.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWork in a well-ventilated area away from flames, sparks, and other ignition sources.\u003c\/li\u003e\n  \u003cli\u003eGasoline is hazardous. Wear appropriate protective equipment and dispose of fuel-soaked materials safely.\u003c\/li\u003e\n  \u003cli\u003eVerify the original part, dimensions, sealing arrangement, engine model, and serial number before purchase and installation.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when the fuel-system configuration or service procedure is uncertain.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement product, not an original equipment component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — Practical replacement components for marine maintenance and repair.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Information\u003c\/strong\u003e — Reference numbers and fitment details are provided to support comparison with the original part.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupport for Installation\u003c\/strong\u003e — Review the engine service information and verify the complete configuration before fitting any fuel-system component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718265868603,"sku":"0L-1GY9-LXIW","price":21.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/0L-1GY9-LXIW.png?v=1762958532"},{"product_id":"exhaust-elbow-gasket-fits-mercruiser-2-5l-3-0l-v8-replaces-27-997771-sierra-18-2833-9","title":"Exhaust Elbow Gasket – Fits MerCruiser 120, 140, 2.5L, 3.0L \u0026 V8 Models (Replaces 27-997771, Sierra 18-2833-9)","description":"\u003csection\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eExhaust Elbow Gasket\u003c\/strong\u003e is a single replacement gasket designed to seal the exhaust manifold-to-riser or elbow connection on compatible MerCruiser wet-joint exhaust systems. It is listed for select MerCruiser 120, 140, 2.5L, 3.0L and V8 applications. Confirm the engine model, exhaust design and original gasket shape before ordering.\u003c\/p\u003e\n\u003cp\u003eThis gasket replaces MerCruiser part number \u003cstrong\u003e27-997771\u003c\/strong\u003e and is listed as an interchange for \u003cstrong\u003eSierra 18-2833-9\u003c\/strong\u003e. Reference numbers describe potential replacement relationships; always compare the original part and verify the specific engine application.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFor compatible wet-joint exhaust connections.\u003c\/li\u003e\n  \u003cli\u003eSeals the joint between the exhaust manifold and exhaust riser or elbow.\u003c\/li\u003e\n  \u003cli\u003eComposite fiber gasket construction for marine exhaust service.\u003c\/li\u003e\n  \u003cli\u003eSold as one individual exhaust elbow gasket.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these listed replacement references to help identify the correct gasket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Interchange\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e27-997771\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-2833-9\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe available product record identifies this gasket for select MerCruiser 120, 140, 2.5L, 3.0L and V8 applications. Exact fitment can vary by engine year, exhaust-manifold design and serial-number range, so verify the application against the engine service information and the original gasket before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Compatible Engine Models\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eEngine Information\u003c\/th\u003e\n\u003cth\u003eExhaust System\u003c\/th\u003e\n\u003cth\u003eReplacement Reference\u003c\/th\u003e\n\u003cth\u003eFitment Notes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e120\u003c\/td\u003e\n\u003ctd\u003e2.5L-class application\u003c\/td\u003e\n\u003ctd\u003eWet-joint\u003c\/td\u003e\n\u003ctd\u003e27-997771\u003c\/td\u003e\n\u003ctd\u003eVerify year, serial range and gasket profile.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e140\u003c\/td\u003e\n\u003ctd\u003e3.0L-class application\u003c\/td\u003e\n\u003ctd\u003eWet-joint\u003c\/td\u003e\n\u003ctd\u003e27-997771\u003c\/td\u003e\n\u003ctd\u003eVerify year, serial range and gasket profile.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e2.5L \/ 3.0L\u003c\/td\u003e\n\u003ctd\u003eSelected I4 applications\u003c\/td\u003e\n\u003ctd\u003eWet-joint\u003c\/td\u003e\n\u003ctd\u003e27-997771\u003c\/td\u003e\n\u003ctd\u003eConfirm the manifold and riser connection before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eV8\u003c\/td\u003e\n\u003ctd\u003eSelected V8 applications\u003c\/td\u003e\n\u003ctd\u003eWet-joint\u003c\/td\u003e\n\u003ctd\u003e27-997771\u003c\/td\u003e\n\u003ctd\u003eDo not assume every V8 model uses this gasket; verify the original part.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust Elbow Gasket\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eWet-joint exhaust connection\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eBolted manifold-to-riser or elbow joint\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eComposite fiber gasket material\u003c\/dd\u003e\n  \u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBrown\/tan, subject to production variation\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eExhaust elbow or riser to manifold\u003c\/dd\u003e\n  \u003cdt\u003ePackage Configuration\u003c\/dt\u003e\n\u003cdd\u003eSingle gasket\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e1 x Exhaust Elbow Gasket\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eEnsure the engine is completely cool and disconnect the battery before starting work.\u003c\/li\u003e\n  \u003cli\u003eDrain coolant or cooling water as required by the engine service procedure, then carefully remove the exhaust riser or elbow.\u003c\/li\u003e\n  \u003cli\u003eRemove all remnants of the old gasket from both mating surfaces. Avoid scratching or distorting the manifold and elbow faces.\u003c\/li\u003e\n  \u003cli\u003ePosition the new gasket on the manifold and align all bolt holes and water passages. Install it dry unless the engine service manual specifies otherwise.\u003c\/li\u003e\n  \u003cli\u003eReinstall the exhaust riser or elbow and tighten the fasteners in the specified sequence and to the manufacturer’s torque values.\u003c\/li\u003e\n  \u003cli\u003eRestore the cooling system as required, reconnect the battery and run the engine while checking for exhaust, coolant or water leakage.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing exhaust elbow gasket?\u003c\/summary\u003e\u003cp\u003ePossible signs include water or coolant leakage at the manifold-to-riser joint, visible steam, exhaust odor, overheating or evidence of water entering an exhaust passage. Stop operation and inspect the joint if these symptoms occur.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a wet-joint or dry-joint gasket?\u003c\/summary\u003e\u003cp\u003eThis gasket is listed for wet-joint exhaust connections. Confirm the exhaust design and water-passage layout on your engine before ordering or installing it.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I reuse my old gasket?\u003c\/summary\u003e\u003cp\u003eNo. Exhaust gaskets are generally single-use sealing components. Replace the gasket whenever the manifold or riser connection is disassembled.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need sealant during installation?\u003c\/summary\u003e\u003cp\u003eInstall the gasket according to the engine manufacturer’s service instructions. Do not apply sealant unless the applicable service manual specifically requires it.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this fit every MerCruiser 2.5L, 3.0L or V8 engine?\u003c\/summary\u003e\u003cp\u003eNo universal fitment should be assumed. The gasket is listed for selected MerCruiser applications, and fitment may depend on the engine model, year, serial range and exhaust-manifold design. Compare the original gasket and verify the service information before purchase.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat happens if I use the wrong gasket?\u003c\/summary\u003e\u003cp\u003eAn incorrect gasket can misalign water passages or fail to seal the exhaust connection, potentially causing leaks, overheating, corrosion or water intrusion. Confirm the part profile and application before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eThis listing is for an aftermarket replacement gasket, not a MerCruiser-branded OEM component. It is listed as a replacement for MerCruiser 27-997771 and Sierra 18-2833-9.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed and cost\u003c\/summary\u003e\u003cp\u003eAvailable shipping methods, delivery estimates and costs are shown at checkout and vary by destination.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty and returns\u003c\/summary\u003e\u003cp\u003eWarranty and return eligibility are governed by the applicable store policies. Contact support with your order details if you need assistance.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the engine model, year, serial range, original gasket shape and exhaust design before ordering.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the engine if exhaust, coolant or water leaks are present after installation.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when removing or reinstalling marine exhaust components.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — We supply replacement components for a range of marine repair applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Support\u003c\/strong\u003e — Verify model and part details before installation to help ensure the correct replacement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConvenient Fulfillment\u003c\/strong\u003e — Shipping options and delivery estimates are provided during checkout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718265901371,"sku":"KF24GK061","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/KF24GK061.png?v=1762958533"},{"product_id":"upper-exhaust-bellows-fits-mercruiser-3-0-8-2l-replaces-70981a3-18-2762","title":"Upper Exhaust Bellows for MerCruiser 3.0L–8.2L Sterndrives — Replaces 70981A3","description":"\u003csection\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis replacement \u003cstrong\u003eupper exhaust bellows\u003c\/strong\u003e is intended for selected MerCruiser sterndrive applications using 3.0L through 8.2L engines. It is designed to connect compatible exhaust riser and elbow assemblies and should be matched to the original bellows, connection dimensions, engine model, and sterndrive configuration before ordering.\u003c\/p\u003e\n\u003cp\u003eThis bellows is listed as a replacement for MerCruiser \u003cstrong\u003e70981A3\u003c\/strong\u003e. Additional aftermarket reference numbers commonly associated with this application include Sierra \u003cstrong\u003e18-2762\u003c\/strong\u003e, GLM \u003cstrong\u003e89070\u003c\/strong\u003e, and Mallory Marine \u003cstrong\u003e9-72808\u003c\/strong\u003e. Reference numbers are provided for identification and should be verified against the application and original part.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUpper exhaust bellows for compatible MerCruiser sterndrive exhaust systems.\u003c\/li\u003e\n  \u003cli\u003eDesigned for applications using 3-inch, 15-degree center-mounted risers with a 4-inch elbow.\u003c\/li\u003e\n  \u003cli\u003eDurable reinforced rubber construction for marine exhaust-system service.\u003c\/li\u003e\n  \u003cli\u003eSingle replacement bellows; clamps and other installation hardware are not included unless separately specified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following references to help identify the replacement part. Confirm dimensions and application details before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e70981A3\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-2762\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e89070\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMallory Marine\u003c\/td\u003e\n\u003ctd\u003e9-72808\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe application range below is a reference for commonly listed MerCruiser configurations. Exact fitment can vary by model year, exhaust-manifold and riser arrangement, sterndrive configuration, and serial-number range. Verify the original part number and connection dimensions before purchase.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel or Engine Family\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eCommonly Listed Years\u003c\/th\u003e\n\u003cth\u003eReference Part No.\u003c\/th\u003e\n\u003cth\u003eApplication Notes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e165, 170, 3.7L, 180, 190, 470, 485, 488\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1989\u003c\/td\u003e\n\u003ctd\u003e70981A3\u003c\/td\u003e\n\u003ctd\u003eVerify the manifold, riser, and elbow arrangement.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e3.0L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1983 and later\u003c\/td\u003e\n\u003ctd\u003e70981A3\u003c\/td\u003e\n\u003ctd\u003eConfirm the original bellows and connection dimensions.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eV6 229\/262 CID\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1983 and later\u003c\/td\u003e\n\u003ctd\u003e70981A3\u003c\/td\u003e\n\u003ctd\u003eApplication depends on the exhaust configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.0L \/ 305 CID\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1983 and later\u003c\/td\u003e\n\u003ctd\u003e70981A3\u003c\/td\u003e\n\u003ctd\u003eChevrolet-based V8 application; verify configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L \/ 350 CID\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1983 and later\u003c\/td\u003e\n\u003ctd\u003e70981A3\u003c\/td\u003e\n\u003ctd\u003eChevrolet-based V8 application; verify configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e6.2L \/ 377 CID\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1983 and later\u003c\/td\u003e\n\u003ctd\u003e70981A3\u003c\/td\u003e\n\u003ctd\u003eConfirm the exhaust riser and elbow dimensions.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e7.4L \/ 454 CID\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1981 and later\u003c\/td\u003e\n\u003ctd\u003e70981A3\u003c\/td\u003e\n\u003ctd\u003eBig-block application; verify the original part.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e8.2L \/ 502 CID\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1981 and later\u003c\/td\u003e\n\u003ctd\u003e70981A3\u003c\/td\u003e\n\u003ctd\u003eBig-block application; verify the original part.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eUpper exhaust bellows\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eCompatible MerCruiser sterndrive exhaust systems\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eReinforced rubber\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDesigned for compatible 3-inch riser to 4-inch elbow applications\u003c\/dd\u003e\n  \u003cdt\u003eRiser Configuration\u003c\/dt\u003e\n\u003cdd\u003e3-inch, 15-degree center-mounted riser application where specified\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e198 g (0.44 lb)\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Upper exhaust bellows\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Clamps, sealant, and other installation hardware are not included unless separately stated in the order details.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the boat battery and allow the engine and exhaust components to cool completely.\u003c\/li\u003e\n  \u003cli\u003eGain clear access to the exhaust riser and elbow assembly.\u003c\/li\u003e\n  \u003cli\u003eLoosen and remove the clamps securing the existing exhaust bellows. Reuse them only if they are in suitable condition and are specified for reuse.\u003c\/li\u003e\n  \u003cli\u003eRemove the old bellows and note its orientation before disposal.\u003c\/li\u003e\n  \u003cli\u003eClean the mating surfaces on the riser and elbow, removing debris and old sealant as appropriate.\u003c\/li\u003e\n  \u003cli\u003eCompare the replacement bellows with the original part and confirm that the length, openings, angle, and orientation match.\u003c\/li\u003e\n  \u003cli\u003eFit the new bellows evenly over both mating surfaces.\u003c\/li\u003e\n  \u003cli\u003eInstall suitable clamps and tighten them according to the engine or sterndrive service procedure. Do not overtighten.\u003c\/li\u003e\n  \u003cli\u003eAfter installation, run the engine in a safe environment and inspect for exhaust or water leaks.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery only after the installation and inspection are complete.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm whether this bellows fits my engine?\u003c\/summary\u003e\n  \u003cp\u003eCompare the original bellows, replacement references, connection dimensions, riser angle, exhaust elbow, engine model, sterndrive configuration, and serial-number information. A listed engine family alone does not confirm every exhaust configuration.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common signs of a failing exhaust bellows?\u003c\/summary\u003e\n  \u003cp\u003eCracks, splits, hardening, water leakage, exhaust odor in the engine compartment, and overheating can indicate a damaged exhaust bellows. Inspect the part whenever the exhaust system is serviced.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should an exhaust bellows be inspected?\u003c\/summary\u003e\n  \u003cp\u003eInspect the bellows at least annually and whenever the vessel is serviced. Replace it immediately if it is cracked, brittle, split, deformed, or leaking. Saltwater exposure and storage conditions can accelerate deterioration.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eAre clamps included?\u003c\/summary\u003e\n  \u003cp\u003eNo. This listing is for one upper exhaust bellows. Clamps and other installation hardware are not included unless separately specified.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the difference between an upper and lower exhaust bellows?\u003c\/summary\u003e\n  \u003cp\u003eThe upper exhaust bellows connects compatible exhaust riser and elbow components. A lower bellows is part of the transom and gimbal-housing assembly. Confirm which bellows your sterndrive requires before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n  \u003cp\u003eThis is an aftermarket replacement for the listed application. The MerCruiser and other brand numbers are reference numbers used to identify compatible replacement applications; this product is not represented as a genuine OEM MerCruiser part.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed and cost?\u003c\/summary\u003e\n  \u003cp\u003eShipping methods, delivery estimates, and cost are shown at checkout based on the destination and service selected.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty and returns?\u003c\/summary\u003e\n  \u003cp\u003eWarranty and return eligibility are governed by the current store policies. Contact support with your order details if the product arrives damaged or an issue occurs during normal use.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the original part, dimensions, engine model, sterndrive configuration, and exhaust arrangement before ordering.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the boat if exhaust gases or cooling water are leaking into the engine compartment or bilge.\u003c\/li\u003e\n  \u003cli\u003eFollow the applicable manufacturer service procedure and use suitable clamps and hardware.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when access is restricted or the exhaust configuration is uncertain.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement component, not a genuine OEM part.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — Marine replacement parts selected for dependable service in real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGlobal Fulfillment\u003c\/strong\u003e — Shipping options and delivery estimates are provided during checkout.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Practical replacement solutions with clear application information.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718268096827,"sku":"17B1014R3","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17B1014R3.png?v=1762958619"},{"product_id":"exhaust-elbow-gasket-fits-mercruiser-v6-v8-engines-replaces-27-863724","title":"Exhaust Elbow Gasket (Restrictor) for MerCruiser V6\/V8 Engines – Replaces 27-41813, 27-860233 and 27-863724","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003erestrictor-style exhaust elbow gasket\u003c\/strong\u003e is designed for applicable MerCruiser V6 and V8 marine engines using a compatible center-riser exhaust arrangement. It installs between the exhaust manifold and riser or elbow to help seal the joint and regulate raw-water flow in systems that specify a restricted gasket.\u003c\/p\u003e\n\u003cp\u003eThe gasket replaces Mercury\/MerCruiser OEM references \u003cstrong\u003e27-41813\u003c\/strong\u003e, \u003cstrong\u003e27-860233\u003c\/strong\u003e, and \u003cstrong\u003e27-863724\u003c\/strong\u003e. The corresponding Sierra aftermarket reference is \u003cstrong\u003e18-0897\u003c\/strong\u003e. Catalog information identifies this restrictor gasket for use with compatible risers such as Sierra 18-1976-2 and 18-1970-2.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestrictor-style exhaust elbow gasket for compatible wet-joint exhaust systems.\u003c\/li\u003e\n  \u003cli\u003eInstalls between the exhaust manifold and riser or elbow.\u003c\/li\u003e\n  \u003cli\u003eSuitable only when the engine and exhaust components call for this gasket style.\u003c\/li\u003e\n  \u003cli\u003eVerify the gasket shape, openings, riser application and part number before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThese references are provided for identification and interchange research. They do not replace confirmation of the complete exhaust-manifold and riser configuration.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eReference Type\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e27-41813\u003c\/td\u003e\n        \u003ctd\u003eOEM replacement reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e27-860233\u003c\/td\u003e\n        \u003ctd\u003eOEM replacement reference; restricted center-riser gasket\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e27-863724\u003c\/td\u003e\n        \u003ctd\u003eOEM replacement reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-0897\u003c\/td\u003e\n        \u003ctd\u003eAftermarket equivalent reference; restrictor gasket\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis gasket is associated with a range of MerCruiser V6 and V8 applications, but exact fitment depends on the exhaust manifold, riser or elbow design, gasket opening pattern and cooling configuration. Model, year and horsepower alone are not sufficient to confirm fitment.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Application Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eApplication\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eOEM Reference\u003c\/th\u003e\n        \u003cth\u003eApplication Notes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMerCruiser\u003c\/td\u003e\n        \u003ctd\u003eApplicable V6 and V8 marine engines\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke gasoline marine engine\u003c\/td\u003e\n        \u003ctd\u003e27-41813, 27-860233, 27-863724\u003c\/td\u003e\n        \u003ctd\u003eUse only with a compatible wet-joint center-riser exhaust arrangement that specifies a restrictor gasket.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This listing does not establish fitment for every MerCruiser V6 or V8 engine, every production year, or every manifold and riser combination. Compare the removed gasket and verify the engine service-manual or parts-catalog requirement before installation.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eExhaust elbow gasket\u003c\/dd\u003e\n  \u003cdt\u003eGasket Style\u003c\/dt\u003e\n  \u003cdd\u003eRestrictor\u003c\/dd\u003e\n  \u003cdt\u003eInstallation Location\u003c\/dt\u003e\n  \u003cdd\u003eBetween the exhaust manifold and riser or elbow\u003c\/dd\u003e\n  \u003cdt\u003eCooling Application\u003c\/dt\u003e\n  \u003cdd\u003eCompatible raw-water wet-joint cooling systems that specify a restrictor gasket\u003c\/dd\u003e\n  \u003cdt\u003ePrimary Marine Application\u003c\/dt\u003e\n  \u003cdd\u003eMerCruiser V6 and V8 engines with compatible exhaust hardware\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Reference\u003c\/dt\u003e\n  \u003cdd\u003eSierra 18-0897\u003c\/dd\u003e\n  \u003cdt\u003eOEM Replacement References\u003c\/dt\u003e\n  \u003cdd\u003eMercury\/MerCruiser 27-41813, 27-860233 and 27-863724\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Restrictor exhaust elbow gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOnly the gasket is included. Riser, elbow, manifold, mounting hardware, sealants and other service parts are not included unless specifically stated in the order details.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and allow the engine to cool completely before beginning work.\u003c\/li\u003e\n  \u003cli\u003eClose or drain the cooling system as required by the engine service manual.\u003c\/li\u003e\n  \u003cli\u003eDisconnect hoses and any sensors attached to the exhaust elbow or riser.\u003c\/li\u003e\n  \u003cli\u003eRemove the fasteners securing the riser or elbow to the exhaust manifold and carefully separate the components.\u003c\/li\u003e\n  \u003cli\u003eRemove all old gasket material and corrosion from both mating surfaces. Do not damage or distort the sealing faces.\u003c\/li\u003e\n  \u003cli\u003eCompare the new gasket with the removed gasket and confirm the bolt holes and water and exhaust passages are correctly aligned.\u003c\/li\u003e\n  \u003cli\u003eInstall the gasket in the orientation specified by the engine or exhaust-component service information.\u003c\/li\u003e\n  \u003cli\u003eReinstall the riser or elbow and tighten the fasteners in the specified sequence and to the manufacturer's torque specification.\u003c\/li\u003e\n  \u003cli\u003eReconnect hoses and sensors, restore the cooling system and inspect the assembly before starting the engine.\u003c\/li\u003e\n  \u003cli\u003eRun the engine carefully and check for exhaust, water or cooling leaks around the joint.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat does “restrictor” mean?\u003c\/summary\u003e\u003cp\u003eA restrictor gasket includes a restricted passage intended for exhaust systems and cooling configurations that require controlled water flow. Do not substitute an open gasket unless the engine and exhaust-manifold documentation specifically calls for it.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this fit every MerCruiser V6 or V8 engine?\u003c\/summary\u003e\u003cp\u003eNo. MerCruiser V6 and V8 engines use different manifold, riser, elbow and gasket configurations. Confirm the OEM reference, gasket shape and complete exhaust arrangement before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich OEM numbers does this gasket replace?\u003c\/summary\u003e\u003cp\u003eCatalog references identify Mercury\/MerCruiser 27-41813, 27-860233 and 27-863724 as replacement references for this restrictor-style gasket.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich risers are associated with this gasket?\u003c\/summary\u003e\u003cp\u003eCatalog information associates the gasket with compatible riser references including Sierra 18-1976-2 and 18-1970-2. Confirm the complete application before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this gasket for a dry-joint exhaust system?\u003c\/summary\u003e\u003cp\u003eThis listing is intended for compatible traditional wet-joint exhaust arrangements. Dry-joint systems may use a different gasket design; compare the original part and service documentation before purchase.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need one gasket per engine bank?\u003c\/summary\u003e\u003cp\u003eMany V6 and V8 exhaust systems use one manifold-to-riser gasket per cylinder bank, but the required quantity depends on the specific exhaust arrangement. Confirm the quantity needed for your engine before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM component?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement gasket identified by the listed Mercury\/MerCruiser OEM references and the Sierra 18-0897 aftermarket reference.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the OEM reference, gasket profile, passage layout and exhaust-component application before purchase.\u003c\/li\u003e\n  \u003cli\u003eDo not use a restrictor gasket where the engine or exhaust system requires an open gasket, and do not use an open gasket where a restrictor is specified.\u003c\/li\u003e\n  \u003cli\u003eAllow the engine to cool before service and follow the manufacturer's torque and installation procedures.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when exhaust, cooling or manifold service procedures are unfamiliar.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Parts Focus\u003c\/strong\u003e — We supply replacement parts for marine engines and exhaust systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Conscious Listings\u003c\/strong\u003e — Part-number and configuration details are provided to help customers verify compatibility.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAftermarket Value\u003c\/strong\u003e — Replacement components are offered as practical alternatives to original service parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723787374907,"sku":"HY-1TD8-ZNLD","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/HY-1TD8-ZNLD.png?v=1763031757"}],"url":"https:\/\/seasierra.com\/collections\/mercruiser-4-stroke-180hp-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}