{"title":"MerCruiser 377HP 4-Stroke Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e5e5; border-radius:8px;\"\u003e\n \u003cp\u003eThis page is tailored for MerCruiser 4‑Stroke 377HP sterndrive\/inboard engines. Use it to find compatible parts and practical service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main MerCruiser collection for a wider selection. Scroll to the bottom of this page to start browsing parts for this engine, and remember that on the collection page you can use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category.\u003c\/p\u003e\n \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser\" style=\"display:inline-block; padding:10px 16px; background:#004aad; 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 377HP Model\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eLocate the engine serial\/ID label: commonly on the starboard side of the engine near the flywheel housing, on a valve cover tag, or on a decal near the flame arrestor\/ECM cover.\u003c\/li\u003e\n \u003cli\u003eDrive serial plate: look on the outdrive’s identification tag (gimbal area or drive housing) to confirm Alpha vs Bravo family and ratio.\u003c\/li\u003e\n \u003cli\u003eModel codes and suffixes: terms like “377 MAG\/MPI,” “HO,” or “Catalyst\/Non‑Catalyst” indicate fuel system and emissions package; they affect parts such as exhaust, sensors, and service kits.\u003c\/li\u003e\n \u003cli\u003eCooling\/impeller location: Alpha packages typically use an impeller in the lower unit; Bravo packages generally use an engine‑mounted sea water pump—this changes which impeller kit you need.\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 Overview\u003c\/h2\u003e\n \u003ch3\u003eMerCruiser 377HP Platform\u003c\/h3\u003e\n \u003ctable style=\"width:100%; max-width:960px; 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 #f0f0f0;\"\u003eConfiguration\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e6.2L small‑block V8, multi‑port EFI, 4‑Stroke marine long block; typically paired with Alpha or Bravo sterndrives.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eCommon Models\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eExamples include 6.2L V8 packages around 377 HP (e.g., 377 MAG\/MPI variants) used in sterndrive and inboard applications.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eAdvantages\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eStrong mid‑range torque, smooth EFI drivability, broad parts availability, and robust cooling\/exhaust options for varied duty cycles.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n \u003ctd style=\"padding:8px;\"\u003eConfirm raw‑water vs closed‑cooling setup; Alpha vs Bravo impeller location differs; use engine and drive serial numbers to ensure exact parts compatibility.\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; always follow the official MerCruiser service manual for your specific serial number and operating conditions.\u003c\/p\u003e\n \u003ctable style=\"width:100%; max-width:960px; 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 #f0f0f0;\"\u003eEngine oil + filter\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e100 hours or annually\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eUse FC‑W compliant marine oil; replace filter every oil change.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\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 #f0f0f0;\"\u003eGear oil (sterndrive)\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e100 hours or annually\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eCheck for water intrusion and metal; service sooner after heavy use or storage.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-service-maintenance-kits\"\u003eMerCruiser Service \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eSpark plugs\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e200–300 hours or 3 years\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eReplace sooner if misfire, fouling, or hard starts occur.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\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 #f0f0f0;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e100 hours or annually\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eDrain\/replace more often in humid or ethanol‑blend environments.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\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 #f0f0f0;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e2 seasons or 200 hours\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eAlpha: impeller in drive; Bravo: engine‑mounted sea pump—order accordingly.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\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; border-bottom:1px solid #f0f0f0;\"\u003eAnodes (zinc\/aluminum\/magnesium)\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eInspect every 50 hours; replace at ~50% loss\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eMatch alloy to water type (salt, brackish, fresh) and keep electrical system grounded.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-anodes\"\u003eMerCruiser Anodes\u003c\/a\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;\"\u003eSerpentine\/accessory belt\u003c\/td\u003e\n \u003ctd style=\"padding:8px;\"\u003eInspect every 100 hours; replace as needed\u003c\/td\u003e\n \u003ctd style=\"padding:8px;\"\u003eReplace if cracked, glazed, or noisy; verify tensioner condition.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/belt\"\u003eBelt\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\u003eOil \u0026amp; Filtration: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-oil-filters\"\u003eMerCruiser Oil Filters\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\n\u003c\/li\u003e\n \u003cli\u003eIgnition \/ Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\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\/propellers\"\u003ePropellers\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%; max-width:960px; 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 #f0f0f0;\"\u003eWeak water stream or overheat alarm\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eInspect intake screens\/sea strainer, impeller condition, and thermostat; verify hose clamps and leaks.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eWater pump impeller kit, thermostat, intake screens\/hoses\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eCheck fuel quality, water separator, spark plugs, and prop condition\/pitch; scan for EFI fault codes.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eFuel filter\/water separator, spark plugs, propeller\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eHard starting or rough idle\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eVerify battery voltage and grounds, inspect plugs and ignition leads, check for vacuum leaks and stale fuel.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eSpark plugs, electrical connectors, fuel filter\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;\"\u003eGearcase noise or metal in gear oil\u003c\/td\u003e\n \u003ctd style=\"padding:8px;\"\u003eConfirm oil level\/condition, check for milky oil (water intrusion), inspect propshaft seals and prop hub.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;\"\u003eLower unit seal kit, prop hardware, gear lube service kit\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 service items cross over, but many components (cooling, exhaust, sensors, and ignition) vary by serial number, emissions package, and drive family. Always verify with your engine and drive serials.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhen should I replace the impeller?\u003c\/summary\u003e\n \u003cp\u003eAs a preventive measure every 2 seasons or about 200 hours, sooner if you see overheat warnings, weak flow, or debris damage. Alpha vs Bravo setups use different impeller\/sea pump kits.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should gear oil be changed?\u003c\/summary\u003e\n \u003cp\u003eTypically every 100 hours or annually, and after any prop‑striking incident or extended storage. Replace seals if water intrusion is detected.\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 engine serial number, drive serial number (Alpha\/Bravo and ratio), cooling type (raw vs closed), and any model suffixes (e.g., MPI, Catalyst). Photos of the nameplate help ensure exact matches.\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 #e5e5e5; border-radius:8px;\"\u003e\n \u003cp\u003eReady to find parts by horsepower, year, and model? Browse the main MerCruiser collection to dial in compatible components for your 377HP package.\u003c\/p\u003e\n \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser\" style=\"display:inline-block; padding:10px 16px; background:#004aad; 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":"65-amp-alternator-fits-mercruiser-4-3l-5-0l-5-7l-6-2l-8-1l-engines-replaces-863077t","title":"65 Amp Alternator – Fits MerCruiser 4.3L, 5.0L, 5.7L, 6.2L \u0026 8.1L Engines (Replaces 863077T)","description":"\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis is a direct-fit \u003cstrong\u003e65 Amp Alternator – Fits MerCruiser 4.3L, 5.0L, 5.7L, 6.2L \u0026amp; 8.1L Engines (Replaces 863077T)\u003c\/strong\u003e, designed as a Delco-style alternator with a serpentine belt pulley. It is engineered for MerCruiser sterndrive and inboard engines from 2001 through 2016, including the 100 Vazer, V6, V8, 496 Magnum, 496 HO, and 8.1L models.\u003c\/p\u003e\n \u003cp\u003eIt serves as a direct replacement for Mercury part numbers 863077T, 863077-1, and 8M0095472, as well as Delco 19020611, 19020612, Arrowhead ADR0316, and Sierra 18-6298.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Mounts as a direct replacement using the J180 hinge standard.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e SAE J1171 \u0026amp; ISO 8846 Marine Certified for ignition protection.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Comes as a complete alternator assembly.\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 \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:400px; }\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 \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Interchange\"\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\u003e863077T\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e863077-1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8M0095472\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eDelco\u003c\/td\u003e\n\u003ctd\u003e19020611\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eDelco\u003c\/td\u003e\n\u003ctd\u003e19020612\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eArrowhead\u003c\/td\u003e\n\u003ctd\u003eADR0316\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-6298\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 tables below to ensure proper fitment.\u003c\/p\u003e\n\n \u003ch3\u003eMerCruiser Sterndrive Engines\u003c\/h3\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"MerCruiser Sterndrive Engine Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\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\u003e4.3L (Carb.) Alpha \u0026amp; Bravo\u003c\/td\u003e\n\u003ctd\u003e262 HP\u003c\/td\u003e\n\u003ctd\u003e2002–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e4.3L (MFI) Alpha \u0026amp; Bravo\u003c\/td\u003e\n\u003ctd\u003e262 HP\u003c\/td\u003e\n\u003ctd\u003e2002–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e4.3L MPI\u003c\/td\u003e\n\u003ctd\u003e262 HP\u003c\/td\u003e\n\u003ctd\u003e2001–2002\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e5.0L (2-BBL) (Gen+)\u003c\/td\u003e\n\u003ctd\u003e305 HP\u003c\/td\u003e\n\u003ctd\u003e1998–2002\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003eSerial 0M3200025 through 2A528897\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e5.0L (Carb.) Alpha \u0026amp; Bravo\u003c\/td\u003e\n\u003ctd\u003e305 HP\u003c\/td\u003e\n\u003ctd\u003e2002–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e5.0L MPI Alpha \u0026amp; Bravo\u003c\/td\u003e\n\u003ctd\u003e305 HP\u003c\/td\u003e\n\u003ctd\u003e2001–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e5.7L (2-BBL) (Gen+)\u003c\/td\u003e\n\u003ctd\u003e350 HP\u003c\/td\u003e\n\u003ctd\u003e1998–2002\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003eSerial 0M3200025 through 2A528897\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e5.7L (Carb.) Alpha \u0026amp; Bravo\u003c\/td\u003e\n\u003ctd\u003e350 HP\u003c\/td\u003e\n\u003ctd\u003e2002–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e350 Mag MPI Alpha \u0026amp; Bravo\u003c\/td\u003e\n\u003ctd\u003e350 HP\u003c\/td\u003e\n\u003ctd\u003e2001–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e350 Mag MPI Hor Alpha \u0026amp; Bravo\u003c\/td\u003e\n\u003ctd\u003e350 HP\u003c\/td\u003e\n\u003ctd\u003e2001–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003eHorizon model\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMX 6.2L MPI\u003c\/td\u003e\n\u003ctd\u003e377 HP\u003c\/td\u003e\n\u003ctd\u003e2000–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMX 6.2L MPI Horizon\u003c\/td\u003e\n\u003ctd\u003e377 HP\u003c\/td\u003e\n\u003ctd\u003e2000–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e496 Mag\u003c\/td\u003e\n\u003ctd\u003e496 HP\u003c\/td\u003e\n\u003ctd\u003e2001–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e496 Mag HO\u003c\/td\u003e\n\u003ctd\u003e496 HP\u003c\/td\u003e\n\u003ctd\u003e2001–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003eHigh Output model\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n\n \u003ch3\u003eMerCruiser Inboard Engines\u003c\/h3\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"MerCruiser Inboard Engine Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\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\u003e5.7L EFI (Gen+)\u003c\/td\u003e\n\u003ctd\u003e350 HP\u003c\/td\u003e\n\u003ctd\u003e1998–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e5.7L MIE\u003c\/td\u003e\n\u003ctd\u003e350 HP\u003c\/td\u003e\n\u003ctd\u003e1999–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e350 Mag MPI\u003c\/td\u003e\n\u003ctd\u003e350 HP\u003c\/td\u003e\n\u003ctd\u003e1999–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003eGen+\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e350 Mag MPI Horizon\u003c\/td\u003e\n\u003ctd\u003e350 HP\u003c\/td\u003e\n\u003ctd\u003e1999–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMX 6.2L MPI\u003c\/td\u003e\n\u003ctd\u003e377 HP\u003c\/td\u003e\n\u003ctd\u003e2001–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMX 6.2L MPI Horizon\u003c\/td\u003e\n\u003ctd\u003e377 HP\u003c\/td\u003e\n\u003ctd\u003e2001–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e8.1S Horizon\u003c\/td\u003e\n\u003ctd\u003e496 HP\u003c\/td\u003e\n\u003ctd\u003e2001–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e8.1S HO\u003c\/td\u003e\n\u003ctd\u003e496 HP\u003c\/td\u003e\n\u003ctd\u003e2001–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003eHigh Output model\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \n \u003ch3\u003eMerCruiser Ski \u0026amp; Performance Engines\u003c\/h3\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"MerCruiser Ski \u0026amp; Performance Engine Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\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\u003eBlack Scorpion Ski (Gen+)\u003c\/td\u003e\n\u003ctd\u003e350 HP\u003c\/td\u003e\n\u003ctd\u003e1997–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e5.7L Ski (CARB)\u003c\/td\u003e\n\u003ctd\u003e350 HP\u003c\/td\u003e\n\u003ctd\u003e1998–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMX 6.2L BS MPI Ski\u003c\/td\u003e\n\u003ctd\u003e377 HP\u003c\/td\u003e\n\u003ctd\u003e2001–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e377 Scorpion\u003c\/td\u003e\n\u003ctd\u003e377 HP\u003c\/td\u003e\n\u003ctd\u003e1997–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e377 Scorpion HO EC\u003c\/td\u003e\n\u003ctd\u003e377 HP\u003c\/td\u003e\n\u003ctd\u003e2000–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003eHigh Output model\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e500 EFI\u003c\/td\u003e\n\u003ctd\u003e502 HP\u003c\/td\u003e\n\u003ctd\u003e2000–2002\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e525 EFI\u003c\/td\u003e\n\u003ctd\u003e502 HP\u003c\/td\u003e\n\u003ctd\u003e2000–2002\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e600SCI\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e2002–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e662SCI\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e2002–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e700SCI\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e2002–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e100 Vazer\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e2001–2016\u003c\/td\u003e\n\u003ctd\u003e863077T\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\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\u003eMarine Alternator\u003c\/dd\u003e\n \u003cdt\u003eOutput\u003c\/dt\u003e\n\u003cdd\u003e65-70 Amp\u003c\/dd\u003e\n \u003cdt\u003eVoltage\u003c\/dt\u003e\n\u003cdd\u003e12V\u003c\/dd\u003e\n \u003cdt\u003eRotation\u003c\/dt\u003e\n\u003cdd\u003eClockwise\u003c\/dd\u003e\n \u003cdt\u003eMounting\u003c\/dt\u003e\n\u003cdd\u003eJ180 Hinge\u003c\/dd\u003e\n \u003cdt\u003eBelt Type\u003c\/dt\u003e\n\u003cdd\u003eSerpentine\u003c\/dd\u003e\n \u003cdt\u003ePulley Grooves\u003c\/dt\u003e\n\u003cdd\u003e6\u003c\/dd\u003e\n \u003cdt\u003ePulley Diameter\u003c\/dt\u003e\n\u003cdd\u003e50mm (1.97\")\u003c\/dd\u003e\n \u003cdt\u003eB+ Output\u003c\/dt\u003e\n\u003cdd\u003eM6\u003c\/dd\u003e\n \u003cdt\u003eTerminal Type\u003c\/dt\u003e\n\u003cdd\u003eConnector for I Terminal, No R Terminal\u003c\/dd\u003e\n \u003cdt\u003eRemote Sense\u003c\/dt\u003e\n\u003cdd\u003eNo\u003c\/dd\u003e\n \u003cdt\u003ePolarity\u003c\/dt\u003e\n\u003cdd\u003eNegative\u003c\/dd\u003e\n \u003cdt\u003eHousing\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e4.59 kg (10.11 lbs)\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e22cm L x 20cm W x 20cm H\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\u003e1 x Alternator Assembly (Replaces 863077T)\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 boat's battery terminals to prevent electrical shorts.\u003c\/li\u003e\n \u003cli\u003eLoosen the belt tensioner and remove the serpentine belt from the alternator pulley.\u003c\/li\u003e\n \u003cli\u003eIdentify and carefully disconnect the electrical wiring from the back of the old alternator.\u003c\/li\u003e\n \u003cli\u003eRemove the mounting bolts securing the alternator to the engine bracket.\u003c\/li\u003e\n \u003cli\u003eLift the old alternator out of the engine bay.\u003c\/li\u003e\n \u003cli\u003ePosition the new alternator and secure it with the original mounting bolts.\u003c\/li\u003e\n \u003cli\u003eReconnect the electrical connectors to the appropriate terminals.\u003c\/li\u003e\n \u003cli\u003eRe-install the serpentine belt and apply correct tension using the tensioner.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery terminals.\u003c\/li\u003e\n \u003cli\u003eStart the engine and use a multimeter to verify the charging system output is within specification (typically 13.5V-14.5V).\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 confirm this alternator fits my specific engine?\u003c\/summary\u003e\n \u003cp\u003eThe surest way is to match the part number from your old alternator to one of the cross-references in the Part Number Matrix. If you can't find a number, use the Engine \u0026amp; Model Compatibility tables to find your engine model and year.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs this a 65 Amp or 70 Amp alternator?\u003c\/summary\u003e\n \u003cp\u003eThis unit is sold as a 65-70 amp replacement. While the original Mercury specification is 65 amps, some aftermarket suppliers rate it at 70 amps. It is a direct fit and electronically compatible replacement for the original 863077T and its equivalents, regardless of the amp rating discrepancy.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a failing alternator?\u003c\/summary\u003e\n \u003cp\u003eSymptoms include dimming dash lights, a battery warning light on your console, a frequently dead or weak battery, and sometimes a grinding or whining noise coming from the engine bay. You may also notice electrical components operating poorly at low RPMs.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs this part different from the original OEM part?\u003c\/summary\u003e\n \u003cp\u003eThis is an aftermarket part designed to meet or exceed OEM specifications for fit, form, and function. It offers comparable performance and reliability to the original Delco or Mercury alternator at a better value.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the difference between OEM and aftermarket parts?\u003c\/summary\u003e\n \u003cp\u003eThis listing is for an aftermarket replacement, not an OEM part. It is built to OEM-level specifications with comparable materials in an ISO 9002 certified facility and is batch-inspected for quality and consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the shipping speed and cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit time is 5–15 days. Standard shipping is free to most regions, with expedited options available at checkout where applicable.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\n \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our full policy page or contact us 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 and specifications against your original part before ordering. If anything differs—even if your model appears compatible—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 highly recommended for safety, performance, and to prevent damage to the electrical system.\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 rigorously tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery on most orders, reaching you in 5–15 days worldwide.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — We deliver 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":50587181285691,"sku":"863077T","price":79.3,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/863077T_ef5bb815-dd8c-49b1-ada9-89c1e5e9afc2.png?v=1757934051"},{"product_id":"bushing-fits-mercury-mercruiser-marine-engines-replaces-23-90915","title":"Bushing – Fits Mercury\/Mercruiser Marine Engines (Replaces 23-90915)","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 aftermarket \u003cstrong\u003eBushing – Fits Mercury\/Mercruiser Marine Engines (Replaces 23-90915)\u003c\/strong\u003e is designed for a wide range of Mercury\/Mercruiser engines. It is a direct-fit component for various models from 1982 through 2001, including popular 5.0L, 5.7L, 7.4L, and 8.2L engine families.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Mercury\/Mercruiser part numbers 23-90915 and 90915, and is an interchange for GLM 21426.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered as a direct OEM-equivalent replacement part.\u003c\/li\u003e\n\u003cli\u003eFactory original equipment part ensures proper fit and function.\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\u003e23-90915\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mercruiser\u003c\/td\u003e\n \u003ctd\u003e90915\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e21426\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 bushing is compatible with a wide array of engines under the Mercruiser brand. Please verify your specific model and year against the comprehensive list provided.\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\u003e200 (2 BBL.) GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e200\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1985–1987\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e228 (4 BBL.) GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e228\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1982–1984\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e230 (4 BBL.) GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e230\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1985–1987\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e260 (4 BBL.) GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e260\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1982–1987\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e260 GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e260\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1982–1987\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MAG. ALPHA GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–1995\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MAG. ALPHA (4 BBL.) GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–1997\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MAG (SKI) GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1991–1997\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MAG MPI SKI (GEN+) GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MAG MPI HORIZON MIE\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MAG MPI MIE\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MAG MPI ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e454 MAG. BRAVO (GEN. V) GM 454 V-8\u003c\/td\u003e\n\u003ctd\u003e454\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–1997\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 (2 BBL.) GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 EFI GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 (4 BBL.) GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–1995\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 CARB ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–1995\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 (2 BBL.) GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 EFI GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e5.7LX (4 BBL) GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–1997\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MIE GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994–1997\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 COMPETITION SKI GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–1997\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 COMPETITION SKI (GEN+) GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 CARB ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 CARB MIE\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 CARB SKI\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MIE (LH) GEN. V GM 454 V-8\u003c\/td\u003e\n\u003ctd\u003e7.4L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1992–1996\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 BRAVO (GEN. VI) GM 454 V-8\u003c\/td\u003e\n\u003ctd\u003e7.4L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–1997\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MIE W\/HURTH GM 502 V-8\u003c\/td\u003e\n\u003ctd\u003e8.2L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1990–1992\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MIE GEN. V GM 502 V-8\u003c\/td\u003e\n\u003ctd\u003e8.2L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1993–1996\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e450 (GEN. V) GM 454 V-8\u003c\/td\u003e\n\u003ctd\u003e450\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995–1996\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e465 (GEN. V) GM 502 V-8\u003c\/td\u003e\n\u003ctd\u003e465\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1992–1994\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e465 GM 502 V-8\u003c\/td\u003e\n\u003ctd\u003e465\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1990–1992\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e500 (GEN. V) GM 502 V-8\u003c\/td\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994–1996\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e500 (GEN. VI) GM 502 V-8\u003c\/td\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997–1999\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e500 (GEN. +) GM 502 V-8\u003c\/td\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e500 Bulldog\u003c\/td\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e502 MAG. BRAVO GM 502 V-8\u003c\/td\u003e\n\u003ctd\u003e502\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1990–1992\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e502 MAG. BRAVO (GEN. V) GM 502 V-8\u003c\/td\u003e\n\u003ctd\u003e502\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1992–1993\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e525 SC GM 454 V-8\u003c\/td\u003e\n\u003ctd\u003e525\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1991–1995\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e525 SC (GEN. V) GM 454 V-8\u003c\/td\u003e\n\u003ctd\u003e525\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1992–1996\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e525 SC - Gen VI\u003c\/td\u003e\n\u003ctd\u003e525\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e600 SC Bobtail\u003c\/td\u003e\n\u003ctd\u003e600\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e898 (2 BBL.) GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e898\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1983–1984\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 350 MAG MPI\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 MX 6.2L MPI\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\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\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003eMX 6.2L MPI MIE\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998–2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003eSCORPION 350\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003eSCORPION 350 EC\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003eSCORPION 377\u003c\/td\u003e\n\u003ctd\u003e377\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003eSCORPION 377 HO EC\u003c\/td\u003e\n\u003ctd\u003e377\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e357 STROKER SCORPION\u003c\/td\u003e\n\u003ctd\u003e357\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e383 STROKER SCORPION\u003c\/td\u003e\n\u003ctd\u003e383\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e383 STROKER SCORPION BRAVO\u003c\/td\u003e\n\u003ctd\u003e383\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e357 Alpha 4V\u003c\/td\u003e\n\u003ctd\u003e357\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e357 Mag Bravo 4V\u003c\/td\u003e\n\u003ctd\u003e357\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e383 Mag Bravo 4V\u003c\/td\u003e\n\u003ctd\u003e383\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e383 Mag Inboard 4V\u003c\/td\u003e\n\u003ctd\u003e383\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e540 Stroker 4V\u003c\/td\u003e\n\u003ctd\u003e540\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2001\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 (4 BBL) Gen+ Crate Engine\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 (4BBL) Crate Alpha\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 (4BBL) Crate Bravo\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 (4BBL) Crate Inboard\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e23-90915\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 Alpha (4 BBL) Crate Engine\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e23-90915\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\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eBushing\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eHeight: 2.0 in; Width: 8.5 in; Length: 12.0 in;\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.04 lb (0.018 kg)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eFactory original equipment part\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 Bushing (23-90915)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eEnsure the engine is off and the battery is disconnected for safety.\u003c\/li\u003e\n \u003cli\u003eLocate the old bushing that requires replacement. Access may require removing adjacent components.\u003c\/li\u003e\n \u003cli\u003eCarefully extract the worn bushing using an appropriate puller or press tool. Avoid damaging the housing.\u003c\/li\u003e\n \u003cli\u003eClean the housing area thoroughly to remove any debris or corrosion.\u003c\/li\u003e\n \u003cli\u003eAlign the new bushing and press it into place evenly. Ensure it is fully seated.\u003c\/li\u003e\n \u003cli\u003eReassemble any components that were removed to gain access.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery and test the engine to ensure proper operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a worn or failing bushing?\u003c\/summary\u003e\n \u003cp\u003eCommon symptoms include excessive vibration, unusual noises (clunking or grinding), and noticeable play or looseness in the associated components. A visual inspection may also reveal cracks, deformation, or deterioration of the bushing material.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow can I confirm this bushing will fit my engine if my model isn't listed?\u003c\/summary\u003e\n \u003cp\u003eThe safest method is to cross-reference the part number (23-90915) with your engine's service manual or parts diagram. If you are uncertain, consult a professional marine mechanic to verify fitment before purchasing.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the primary function of this bushing?\u003c\/summary\u003e\n \u003cp\u003eThis bushing is typically used in mounting or linkage assemblies to absorb vibration, reduce friction between moving parts, and maintain proper alignment, ensuring smooth and reliable engine operation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow does this aftermarket bushing compare to the original OEM part?\u003c\/summary\u003e\n \u003cp\u003eThis part is manufactured to meet or exceed OEM specifications using comparable, high-quality materials. It is designed to offer the same performance, fit, and durability as the original factory part.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDo I need any special tools for installation?\u003c\/summary\u003e\n \u003cp\u003eDepending on the specific location, you may need a bushing press or puller tool for safe removal and installation without damaging the housing or the new part. Basic hand tools will also be required.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the recommended maintenance or replacement interval?\u003c\/summary\u003e\n \u003cp\u003eBushings should be inspected regularly as part of your engine's routine maintenance schedule. There is no fixed replacement interval; replacement should be done when signs of wear, damage, or performance degradation are observed.\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":50587183776059,"sku":"23-90915","price":13.01,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23-90915_8a135335-dc87-494b-af7b-6995d375652e.jpg?v=1757934154"},{"product_id":"electric-high-pressure-fuel-pump-fits-mercruiser-v6-v8-efi-mpi-replaces-861156a1-807949a1","title":"Electric High Pressure Fuel Pump – Fits MerCruiser V6 \u0026 V8 EFI\/MPI (Replaces 861156A1, 807949A1)","description":"\u003cstyle\u003e\n\/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n.ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\/* Base table styles *\/\ntable.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\ntable.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n\/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\ntable.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n\/* Small screen optimization *\/\n@media (max-width:480px){\ntable.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 is a high-quality aftermarket \u003cstrong\u003eElectric High Pressure Fuel Pump\u003c\/strong\u003e designed for Mercury MerCruiser V6 and V8 EFI\/MPI engines from approximately 1988 through the 2000s. It is engineered for use with electronic fuel injection (EFI\/MPI) systems only and is not compatible with carbureted engines.\u003c\/p\u003e\n\u003cp\u003eThis component is a direct interchange for Mercury Marine part numbers 861156A1 and 807949A1, as well as Sierra 18-35433, Mallory 935433, and Airtex E11004.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Mounts externally as an in-line pump, not for in-tank use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e Exclusively for modern EFI\/MPI engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Features a durable aluminum housing with one threaded inlet and one non-threaded outlet with a snap fitting.\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\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e807949A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-35433\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e935433\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAirtex\u003c\/td\u003e\n\u003ctd\u003eE11004\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\u003eThe following MerCruiser models are compatible with this fuel pump. Please verify your specific application and part number before ordering.\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 EFI\/TBI\/MPI Alpha\/Bravo\u003c\/td\u003e\n\u003ctd\u003e4.3L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003ctd\u003eNon-threaded outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.0L EFI\/MPI Alpha\/Bravo\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003ctd\u003eNon-threaded outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e5.7L EFI\/MPI Alpha\/Bravo\/Horizon\/MIE\/Ski\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003ctd\u003eNon-threaded outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e350 MPI Alpha\/Bravo\/Horizon\/MIE\/Ski\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003ctd\u003eNon-threaded outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e454 MPI Bravo \u0026amp; Horizon\u003c\/td\u003e\n\u003ctd\u003e7.4L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003ctd\u003eNon-threaded outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e502 MPI\u003c\/td\u003e\n\u003ctd\u003e8.2L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003ctd\u003eNon-threaded outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e7.4L MPI Bravo \u0026amp; MIE\u003c\/td\u003e\n\u003ctd\u003e7.4L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003ctd\u003eNon-threaded outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e8.1L\/8.2L MIE MPI\u003c\/td\u003e\n\u003ctd\u003e8.1L\/8.2L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003ctd\u003eNon-threaded outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eMX6.2L MPI Alpha\/Bravo\/Horizon \u0026amp; MIE\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003ctd\u003eNon-threaded outlet\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\u003e-\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003ctd\u003eNon-threaded outlet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eScorpion 377 Sterndrive Racing\u003c\/td\u003e\n\u003ctd\u003e377\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–\u003c\/td\u003e\n\u003ctd\u003e861156A1\u003c\/td\u003e\n\u003ctd\u003eNon-threaded outlet\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\u003eElectric High Pressure Fuel Pump\u003c\/dd\u003e\n\u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eIn-line (not in-tank)\u003c\/dd\u003e\n\u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n\u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eOne threaded end, one non-threaded end with snap fitting\u003c\/dd\u003e\n\u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eAluminum\u003c\/dd\u003e\n\u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eSilver\/Metallic\u003c\/dd\u003e\n\u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e22.5 x 14.0 x 8.0 cm\u003c\/dd\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.65 kg (1.43 lb)\u003c\/dd\u003e\n\u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eBarb connections\u003c\/dd\u003e\n\u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eIMPORTANT: For EFI\/MPI engines only. Not compatible with carbureted engines.\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 Electric Fuel Pump (\u003cspan style=\"color:#d0021b;\"\u003e861156A1\u003c\/span\u003e)\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 boat's battery before beginning work.\u003c\/li\u003e\n\u003cli\u003eCarefully relieve the pressure from the fuel system according to your engine's service manual.\u003c\/li\u003e\n\u003cli\u003ePlace absorbent rags under the fuel line connections to catch any spills.\u003c\/li\u003e\n\u003cli\u003eDisconnect the fuel lines and the electrical connector from the old pump.\u003c\/li\u003e\n\u003cli\u003eRemove the mounting hardware and take out the old fuel pump.\u003c\/li\u003e\n\u003cli\u003eInstall the new pump in the same location and orientation as the original.\u003c\/li\u003e\n\u003cli\u003eSecurely reconnect the fuel lines and the electrical connector.\u003c\/li\u003e\n\u003cli\u003eReconnect the battery.\u003c\/li\u003e\n\u003cli\u003ePrime the fuel system by cycling the ignition key (without starting the engine) a few times.\u003c\/li\u003e\n\u003cli\u003eThoroughly inspect all connections for leaks before and 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\u003csummary\u003eHow do I know if this fuel pump fits my MerCruiser engine?\u003c\/summary\u003e\u003cp\u003eThis pump fits most MerCruiser V6 and V8 EFI\/MPI engines from 1988 to the 2000s. The best way to confirm fitment is to verify your engine model and original part number (e.g., 861156A1, 807949A1) against our compatibility tables. This part is not for carbureted engines.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing high-pressure fuel pump?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include engine hesitation, sputtering at high speeds, loss of power, difficulty starting, or a noticeable whining noise coming from the pump's location. A fuel pressure test is the most reliable diagnostic method.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an in-tank or in-line fuel pump?\u003c\/summary\u003e\u003cp\u003eThis is an external, in-line high-pressure fuel pump. It is designed to be mounted outside of the fuel tank and is not a substitute for an in-tank pump.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat's the difference between this and a carbureted engine's fuel pump?\u003c\/summary\u003e\u003cp\u003eThis is a high-pressure pump designed for Electronic Fuel Injection (EFI\/MPI) systems, which require significantly higher fuel pressure than low-pressure pumps used in carbureted engines. They are not interchangeable.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need any special tools for installation?\u003c\/summary\u003e\u003cp\u003eStandard hand tools are required. A fuel pressure gauge is essential for safely relieving system pressure before you start and for verifying correct pressure after installation. Line wrenches for fuel fittings are also highly recommended to prevent stripping.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the recommended replacement interval?\u003c\/summary\u003e\u003cp\u003eFuel pumps do not have a fixed service interval and are typically replaced when they fail or show signs of performance degradation. Engine hours, fuel quality, and operating conditions all affect the lifespan of a fuel pump.\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\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":50587184824635,"sku":"861156A1","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/861156A1_afdec4e3-03d6-4f9f-9b1d-da1f5e513b12.jpg?v=1757934195"},{"product_id":"fuel-pump-mounting-gasket-fits-mercury-mercruiser-305-350-v8-engines-replaces-27-34898","title":"Fuel Pump Mounting Gasket – Fits Mercury\/MerCruiser 305\/350 V8 Engines (Replaces 27-34898)","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 aftermarket \u003cstrong\u003eFuel Pump Mounting Gasket\u003c\/strong\u003e provides a reliable seal between the fuel pump and engine block. It is designed for a wide range of Mercury\/MerCruiser V6 and V8 engines (305, 350, 377, and 383 cubic inch models) manufactured between 1963 and 2002, ensuring proper fuel system function and preventing leaks.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Mercury\/Quicksilver 27-34898, Sierra 18-0876, and GLM 32750, offering a precise fit and OEM-equivalent performance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls between the fuel pump and the engine block.\u003c\/li\u003e\n\u003cli\u003eEngineered from durable paper\/composite gasket material for gasoline applications.\u003c\/li\u003e\n\u003cli\u003eCreates a secure seal to prevent fuel and oil leaks.\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\/Quicksilver\u003c\/td\u003e\n \u003ctd\u003e27-34898\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-0876\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e32750\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 gasket fits numerous MerCruiser sterndrive and inboard engines. Please verify your specific model and year to ensure compatibility.\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\u003e190 GM 283 V-8\u003c\/td\u003e\n\u003ctd\u003e190\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1963–1964\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e225 GM 327 V-8\u003c\/td\u003e\n\u003ctd\u003e225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1963–1969\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e250 GM 327 V-8\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1968–1969\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e270 GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e270\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1969–1972\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e198 MIE (2 BBL.) GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e198\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e228 (4 BBL.) GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e228\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977–1982\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e250 (2 BBL.) GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1977\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e260 (4 BBL.) GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e260\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1978–1987\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e230 (4 BBL.) GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e230\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1981–1987\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 (2 BBL.) GM 305 V-8\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–1995\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–1997\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 MAG ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–1997\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 MPI ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e5.0L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2002\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 CARB ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2002\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 EFI (TBI) GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995–1997\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 MAG MPI ALPHA\/BRAVO\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2002\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\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\u003e377\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2002\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\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\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2002\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003e280 TRS GM 350 V-8 (SKI)\u003c\/td\u003e\n\u003ctd\u003e280\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1975–1976\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 TEMPEST GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e300\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1985–1986\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 MAG (SKI) GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1991–1997\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 MAG MPI SKI\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995–2002\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 COMPETITION SKI GM 350 V-8\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1987–1997\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 350 MAG SKI\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–2002\u003c\/td\u003e\n\u003ctd\u003e27-34898\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 MX 6.2L\u003c\/td\u003e\n\u003ctd\u003e6.2L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2001–2002\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMerCruiser\u003c\/td\u003e\n\u003ctd\u003eSCORPION 377\u003c\/td\u003e\n\u003ctd\u003e377\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2002\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003e\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\u003e383\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003e27-34898\u003c\/td\u003e\n\u003ctd\u003eGen+ Crate 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\u003eFuel Pump Mounting Gasket\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eBetween fuel pump and engine block\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 gasket material\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e7.13 × 6.0 × 0.13 inches\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.009 kg (0.02 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 Fuel Pump Mounting Gasket (27-34898)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and relieve any pressure from the fuel system.\u003c\/li\u003e\n \u003cli\u003eCarefully disconnect the fuel inlet and outlet lines from the fuel pump.\u003c\/li\u003e\n \u003cli\u003eRemove the fuel pump mounting bolts and detach the pump from the engine block.\u003c\/li\u003e\n \u003cli\u003eRemove the old gasket and thoroughly clean both mating surfaces to remove any residue or 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\u003eMount the new fuel pump and tighten the bolts to the manufacturer's recommended torque specifications.\u003c\/li\u003e\n \u003cli\u003eReconnect the fuel lines securely.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery, start the engine, and carefully check for any fuel leaks around the gasket and fittings.\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 fuel pump gasket is failing?\u003c\/summary\u003e\n \u003cp\u003eSigns of a failing gasket include visible fuel or oil leaks around the fuel pump mounting area, a strong smell of gasoline, poor engine performance, hesitation, or stalling. A visual inspection is the best way to confirm a leak.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this gasket compatible with ethanol-blended fuels?\u003c\/summary\u003e\n \u003cp\u003eYes, this gasket is made from modern composite materials designed to be resistant to standard ethanol-blended gasoline (up to E10). For higher concentrations, always consult your engine manufacturer's recommendations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDo I need to use a sealant with this gasket?\u003c\/summary\u003e\n \u003cp\u003eGenerally, this type of gasket is designed to be installed dry. Applying sealant can sometimes cause the gasket to slip or squeeze out, leading to leaks. Always follow the installation guidelines in your engine's service manual.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWill this fit a V6 MerCruiser engine?\u003c\/summary\u003e\n \u003cp\u003eYes, this gasket fits a wide range of V6 and V8 MerCruiser engines. Please refer to the detailed compatibility table to ensure it matches your specific engine model and year.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the recommended replacement interval?\u003c\/summary\u003e\n \u003cp\u003eThere is no specific replacement interval for this gasket. It should be replaced whenever the fuel pump is removed or if a leak is 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\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":50590213308731,"sku":"27-34898","price":11.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/27-34898_5cbfc69e-e8e2-4175-b59a-1081f3ade813.jpg?v=1758080281"},{"product_id":"thermostat-gasket-fits-mercruiser-v8-engines-replaces-27-418122","title":"Thermostat Gasket – Fits MerCruiser V8 Engines (Replaces 27-418122)","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 Gasket – Fits MerCruiser V8 Engines (Replaces 27-418122)\u003c\/strong\u003e is engineered for various MerCruiser high-performance V8 engines, including the 420\/425, 450, 465, 500, 525, and Scorpion 377 models from 1987 through the early 2000s. It ensures a reliable seal for your engine's cooling system.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Mercury\/MerCruiser part numbers 27-418122 and 418122.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eDesigned for direct replacement, ensuring a perfect fit and seal.\u003c\/li\u003e\n \u003cli\u003eConstructed from high-quality, corrosion-resistant materials for durability in marine environments.\u003c\/li\u003e\n \u003cli\u003eEngineered to maintain a tight seal for the thermostat housing, preventing coolant leaks.\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\u003e27-418122\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n \u003ctd\u003e418122\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 gasket is designed for a wide range of high-performance MerCruiser and Mercury Racing V8 engines. Please check your specific model and serial number range 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\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e420 GM 454 V-8\u003c\/td\u003e\n \u003ctd\u003e420\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1987–1989\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0A398941 THRU 0B622418\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e425 GM 454 V-8\u003c\/td\u003e\n \u003ctd\u003e425\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1990–1992\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0A398941 THRU 0D937011\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e425 (GEN. V) GM 454 V-8\u003c\/td\u003e\n \u003ctd\u003e425\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1992–1993\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0A398941 THRU 0D937011\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e450 (GEN. V) GM 454 V-8\u003c\/td\u003e\n \u003ctd\u003e450\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1995–1996\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0F347100 THRU 0F347277\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e465 GM 502 V-8\u003c\/td\u003e\n \u003ctd\u003e465\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1990–1992\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0C849992 THRU 0F213244\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e465 (GEN. V) GM 502 V-8\u003c\/td\u003e\n \u003ctd\u003e465\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1992–1994\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0C849992 THRU 0F213244\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e500 (GEN. +) GM 502 V-8\u003c\/td\u003e\n \u003ctd\u003e500\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1999\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0L414639 THRU 0L601036\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e500 (GEN. V) GM 502 V-8\u003c\/td\u003e\n \u003ctd\u003e500\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–1995\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0F213293 THRU 0F615766\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e500 (GEN. V) GM 502 V-8\u003c\/td\u003e\n \u003ctd\u003e500\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1996\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0F615767 THRU 0F745159\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e500 (GEN. VI) GM 502 V-8\u003c\/td\u003e\n \u003ctd\u003e500\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1997–1998\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0F745195 THRU 0F877722, 0K000001 THRU 0L000737, 0L000768 THRU 0L001772\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e500 Bulldog GM 540 V-8\u003c\/td\u003e\n \u003ctd\u003e500\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1990–1996\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0C577254 THRU 0F745405\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e500 Bulldog\u003c\/td\u003e\n \u003ctd\u003e500\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1999–2001\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0L414620 THRU 0M050281\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e500 EFI\u003c\/td\u003e\n \u003ctd\u003e500\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eMultiple Serial Ranges\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e525 SC (GEN. V) GM 454 V-8\u003c\/td\u003e\n \u003ctd\u003e525\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1992–1995\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0D456000 THRU 0F348963\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e525 SC (GEN. V) GM 454 V-8\u003c\/td\u003e\n \u003ctd\u003e525\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1996\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0F615814 THRU 0F745215\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e525 SC GM 454 V-8\u003c\/td\u003e\n \u003ctd\u003e525\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1991–1992\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0D456000 THRU 0F348963\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e525 SC Gen VI\u003c\/td\u003e\n \u003ctd\u003e525\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0F745260 THRU 0F877734, 0K000012 THRU 0L415623\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003eScorpion 377 Sterndrive\u003c\/td\u003e\n \u003ctd\u003e377\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 0L416146 THRU 0M907201\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Racing\u003c\/td\u003e\n \u003ctd\u003e540 Stroker 4V\u003c\/td\u003e\n \u003ctd\u003e540\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e27-418122\u003c\/td\u003e\n \u003ctd\u003eSerial 1G400000 \u0026amp; Up\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\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\u003eCorrosion-Resistant Material (Marine Grade)\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e15.5\" L x 10.0\" W x 0.3\" H\u003c\/dd\u003e\n \u003cdt\u003eOperating Temperature\u003c\/dt\u003e\n\u003cdd\u003eDesigned for Marine Engine Cooling Systems\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eEnsures tight seal for thermostat housing\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 Gasket (27-418122)\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 terminals for safety.\u003c\/li\u003e\n \u003cli\u003eDrain the engine coolant to a level below the thermostat housing.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the bolts that secure the thermostat housing cover.\u003c\/li\u003e\n \u003cli\u003eTake out the old thermostat and gasket. Thoroughly clean both mating surfaces of any old gasket material or residue.\u003c\/li\u003e\n \u003cli\u003ePosition the new thermostat and gasket correctly.\u003c\/li\u003e\n \u003cli\u003eRe-install the thermostat housing cover and tighten the bolts to the manufacturer's specified torque.\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.\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 will fit my engine?\u003c\/summary\u003e\n \u003cp\u003eThis gasket fits a specific range of MerCruiser engines. Please refer to the \"Engine \u0026amp; Model Compatibility\" chart and cross-reference your engine's model, year, and serial number. Verifying the OEM part number (27-418122) is the most reliable method.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDo I need to use a sealant with this gasket?\u003c\/summary\u003e\n \u003cp\u003eGenerally, this type of gasket is designed to be installed dry. However, always consult your engine's service manual for specific recommendations. Some mechanics apply a very thin layer of marine-grade gasket sealant as a precaution.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing thermostat gasket?\u003c\/summary\u003e\n \u003cp\u003eCommon symptoms include visible coolant leaks around the thermostat housing, engine overheating, or an engine that takes too long to reach operating temperature. You may also notice a sweet smell of antifreeze after the engine has been running.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should I replace the thermostat gasket?\u003c\/summary\u003e\n \u003cp\u003eIt is best practice to replace the thermostat gasket whenever you replace the thermostat, or if you have to remove the housing for any other service. There is no fixed replacement interval, but it should be inspected regularly for signs of wear or leakage.\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":50593340031291,"sku":"27-418122","price":19.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/27-418122_16279f47-8328-4c66-ae2f-ebdb6e43a65e.jpg?v=1758250847"},{"product_id":"sea-water-pump-impeller-repair-kit-fits-mercruiser-bravo-alpha-1-2-3-replaces-47-59362t6","title":"Sea Water Pump Impeller Repair Kit – Fits MerCruiser Bravo, Alpha 1\/2\/3 (Replaces 47-59362T6)","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\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eSea Water Pump Impeller Repair Kit\u003c\/strong\u003e is designed for a broad range of Mercury MerCruiser inboard and sterndrive engines, including 4.3L, 5.0L, 5.7L, 7.4L, and 8.2L models manufactured from the 1980s through 2003 that are equipped with a one-piece plastic pump body and serpentine belt system.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Mercury part numbers 47-59362T6, 47-59362, 47-59362T1, 47-593621, 47-59362A1, 47-59362Q01, and interchanges with Sierra 18-3087, GLM 89740, Mallory 9-45375, and Jabsco 17954-0001-P.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eEngineered for engine-mounted raw water pumps with a one-piece plastic housing.\u003c\/li\u003e\n \u003cli\u003eFeatures a durable neoprene impeller with a hardened nylon hub for longevity.\u003c\/li\u003e\n \u003cli\u003eThe complete kit includes the impeller, face plate, and O-rings for a full service.\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\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-59362\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-59362T1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-593621\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-59362A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-59362Q01\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-3087\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM\u003c\/td\u003e\n \u003ctd\u003e89740\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMallory\u003c\/td\u003e\n \u003ctd\u003e9-45375\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJabsco\u003c\/td\u003e\n \u003ctd\u003e17954-0001-P\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 impeller kit fits a wide range of MerCruiser engines from the early 1980s through 2003, specifically those equipped with a one-piece plastic raw water pump housing and serpentine belt system.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Compatible Engine Models for MerCruiser\"\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\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eMerCruiser 260\u003c\/td\u003e\n \u003ctd\u003e260\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1981–1984\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eMerCruiser 340\u003c\/td\u003e\n \u003ctd\u003e340\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1981–1987\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eMerCruiser 350 MAG\/MPI\/TBI\u003c\/td\u003e\n \u003ctd\u003e350\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eMerCruiser 454 MAG\/SKI\/TBI\u003c\/td\u003e\n \u003ctd\u003e454\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eInboard Engine 4.3L\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eUp to 2003\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003eSerpentine belt, one-piece housing\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eInboard Engine 5.0L\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eUp to 2003\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003eSerpentine belt, one-piece housing\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eInboard Engine 5.7L\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eUp to 2003\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003eSerpentine belt, one-piece housing\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eInboard Engine 7.4L\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eUp to 2003\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003eSerpentine belt, one-piece housing\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eInboard Engine 8.2L\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eUp to 2003\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003eSerpentine belt, one-piece housing\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eRace Stern Drive 320 efi\u003c\/td\u003e\n \u003ctd\u003e320\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eRace Stern Drive 377 efi\u003c\/td\u003e\n \u003ctd\u003e377\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eRace Stern Drives (420, 425, 450, 465, 500 efi, 525SC, 575, 600SC, 800SC)\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n \u003ctd\u003eStern Drive Alpha\/Bravo (200\/228\/230\/260\/262TBI\/300\/330\/350 MAG\/370\/372\/502MPI\/EFI\/MC1\/MC2)\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003eUp to 2003\u003c\/td\u003e\n \u003ctd\u003e47-59362T6\u003c\/td\u003e\n \u003ctd\u003eOne-piece housing, serpentine belt\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\u003eSea Water\/Raw Water Pump Impeller Repair Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eEngine-mounted pumps with one-piece plastic body\u003c\/dd\u003e\n \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene with hardened nylon hub\u003c\/dd\u003e\n \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e8\u003c\/dd\u003e\n \u003cdt\u003eShaft Type\u003c\/dt\u003e\n\u003cdd\u003eD-shaped shaft (Single Flat Drive)\u003c\/dd\u003e\n \u003cdt\u003eImpeller Thickness\u003c\/dt\u003e\n\u003cdd\u003e2.01 inches (51.05 mm)\u003c\/dd\u003e\n \u003cdt\u003eOverall Diameter\u003c\/dt\u003e\n\u003cdd\u003e2.64 inches (67.06 mm)\u003c\/dd\u003e\n \u003cdt\u003eShaft Diameter\u003c\/dt\u003e\n\u003cdd\u003e0.75 inches (19.05 mm)\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.39 lbs (0.18 kg) \/ 90g\u003c\/dd\u003e\n \u003cdt\u003eDimensions (L × W × H)\u003c\/dt\u003e\n\u003cdd\u003e4.5 × 2.63 × 4.88 inches (114.3 × 66.8 × 124.0 mm)\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 Water Pump Impeller (47-59362T6)\u003c\/li\u003e\n \u003cli\u003e1 x Face Plate\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x O-rings\u003c\/span\u003e\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 close the water inlet seacock.\u003c\/li\u003e\n \u003cli\u003eLocate the raw water pump housing on the engine.\u003c\/li\u003e\n \u003cli\u003eLoosen and remove the screws holding the pump cover plate.\u003c\/li\u003e\n \u003cli\u003eCarefully remove the old impeller using pliers or an impeller puller tool. Note the orientation of the blades for reinstallation.\u003c\/li\u003e\n \u003cli\u003eClean the interior of the pump housing and the cover plate, removing any old gasket material or debris.\u003c\/li\u003e\n \u003cli\u003eInspect the housing for scoring or cracks; replace the pump if significant wear is found.\u003c\/li\u003e\n \u003cli\u003eInstall the new O-rings or gaskets, ensuring a proper seal.\u003c\/li\u003e\n \u003cli\u003eLubricate the new impeller and the inside of the housing with a suitable marine lubricant.\u003c\/li\u003e\n \u003cli\u003eInsert the new impeller, rotating the shaft in the direction of engine operation to bend the blades correctly.\u003c\/li\u003e\n \u003cli\u003eReinstall the cover plate and tighten the screws in a star pattern to ensure even pressure.\u003c\/li\u003e\n \u003cli\u003eOpen the seacock, reconnect the battery, and start the engine.\u003c\/li\u003e\n \u003cli\u003eImmediately check the pump and hose connections for any water 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 impeller fits my MerCruiser engine?\u003c\/summary\u003e\n \u003cp\u003eTo confirm fitment, ensure your engine is a model from the 1980s to 2003 and is equipped with the one-piece plastic raw water pump body, which is typically used with a serpentine belt system. Always verify your specific model against the compatibility table provided on this page.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing sea water pump impeller?\u003c\/summary\u003e\n \u003cp\u003eThe most common symptoms of a worn or damaged impeller are engine overheating, especially at idle or low speeds, a weak or non-existent stream of water from the exhaust outlet, and finding rubber fragments in the cooling system. Visible cracks, stiffness, or missing blades on the impeller itself are clear indicators for replacement.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should I replace my engine's impeller?\u003c\/summary\u003e\n \u003cp\u003eAs a crucial part of preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1-2 years or after every 100-200 hours of engine operation. This interval may vary based on usage, water conditions (sandy or silty water causes faster wear), and manufacturer recommendations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this impeller kit compatible with a two-piece bronze pump housing?\u003c\/summary\u003e\n \u003cp\u003eNo, this particular repair kit is specifically designed for MerCruiser engines that use a one-piece plastic sea water pump body. It will not fit the older-style two-piece bronze pump housings.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the difference between an OEM and an aftermarket part?\u003c\/summary\u003e\n \u003cp\u003eThis listing is for an aftermarket replacement part, not an Original Equipment Manufacturer (OEM) component. It has been engineered to meet or exceed OEM-level specifications using comparable high-quality materials. Our parts are manufactured in an ISO 9002 certified facility and are batch-inspected to ensure consistent quality and performance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow much is shipping and how fast will it arrive?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly, with typical transit times of 5–15 days for most regions. Standard shipping is free for most orders. Expedited shipping options, if available for your location, will be presented at checkout for an additional fee.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the warranty and return policy for this part?\u003c\/summary\u003e\n \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal operating conditions. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard return window, provided the part is unused and in its original packaging. Please see our full policy page or reach out for detailed 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 purchase. If anything differs—even if your model is listed as 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 reference purposes only.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is highly recommended for safety and to ensure optimal performance of your engine's cooling system.\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 demanding 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 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 our manufacturing partners, 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":50602587849019,"sku":"47-59362T6","price":43.19,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/47-59362T6_13592fb1-2675-4d56-a531-f6b53dff1e8a.jpg?v=1758594858"},{"product_id":"sea-water-pump-kit-fits-mercruiser-bravo-trs-sterndrives-inboard-engines-replaces-46-807151a14-46-807151a7","title":"Water Pump Kit for MerCruiser Bravo Sterndrives – Replaces 46-807151A14 and 46-807151A7","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket water pump kit is designed for MerCruiser Bravo sterndrive applications and replaces Mercury references 46-807151A14 and 46-807151A7. The kit is intended for service of the Bravo seawater pump and includes the wear plates, impeller, body gasket, and water pump gasket listed below.\u003c\/p\u003e\n\u003cp\u003eUse the original pump and part number references to confirm compatibility before ordering. The catalog relationship for this kit identifies the application as MerCruiser Bravo; it does not establish fitment for every MerCruiser inboard engine, TRS sterndrive, Alpha application, or every housing configuration.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReplacement water pump service kit for MerCruiser Bravo applications.\u003c\/li\u003e\n\u003cli\u003eIncludes an impeller, two wear plates, a body gasket, and a water pump gasket.\u003c\/li\u003e\n\u003cli\u003eUse the listed OEM references and the original component configuration when confirming fitment.\u003c\/li\u003e\n\u003c\/ul\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\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThese references are provided for identification and replacement lookup. A number appearing in a catalog does not by itself confirm fitment for every engine 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 or Reference\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eRole\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\u003e46-807151A14\u003c\/td\u003e\n\u003ctd\u003eReplacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e46-807151A7\u003c\/td\u003e\n\u003ctd\u003eReplacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eAftermarket kit reference\u003c\/td\u003e\n\u003ctd\u003e18-3150\u003c\/td\u003e\n\u003ctd\u003eWater pump kit reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe available catalog listing identifies this water pump kit for MerCruiser Bravo applications. Confirm the engine and drive configuration, original pump design, and original part number before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Compatibility Information\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eConfirmed Reference\u003c\/th\u003e\n\u003cth\u003eFitment Note\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\u003eBravo sterndrive\u003c\/td\u003e\n \u003ctd\u003e46-807151A14\u003c\/td\u003e\n \u003ctd\u003eCatalog-listed replacement application; verify the complete configuration before ordering.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMerCruiser\u003c\/td\u003e\n \u003ctd\u003eBravo sterndrive\u003c\/td\u003e\n \u003ctd\u003e46-807151A7\u003c\/td\u003e\n \u003ctd\u003eCatalog-listed replacement application; verify the complete configuration before ordering.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n \u003cdd\u003eWater pump service kit\u003c\/dd\u003e\n \u003cdt\u003eApplication\u003c\/dt\u003e\n \u003cdd\u003eMerCruiser Bravo sterndrive applications\u003c\/dd\u003e\n \u003cdt\u003eKit Reference\u003c\/dt\u003e\n \u003cdd\u003e18-3150\u003c\/dd\u003e\n \u003cdt\u003eOEM Replacement References\u003c\/dt\u003e\n \u003cdd\u003e46-807151A14 and 46-807151A7\u003c\/dd\u003e\n \u003cdt\u003eHousing or Pump Assembly\u003c\/dt\u003e\n \u003cdd\u003eNot included as a complete pump housing assembly; verify the existing pump body and housing before ordering.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Wear Plate, reference 94576\u003c\/li\u003e\n \u003cli\u003e1 x Wear Plate, reference 94916\u003c\/li\u003e\n \u003cli\u003e1 x Impeller, reference 47-59362\u003c\/li\u003e\n \u003cli\u003e2 x Body Gasket, reference 27-94914\u003c\/li\u003e\n \u003cli\u003e1 x Water Pump Gasket, reference 27-805215-1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This is a service kit, not a complete water pump assembly. The available kit listing does not include a pump housing, mounting screws, washers, O-rings, or a complete assembled pump.\u003c\/p\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and close the raw-water intake seacock before beginning service.\u003c\/li\u003e\n \u003cli\u003eRemove the existing pump components according to the engine and drive manufacturer's service procedure.\u003c\/li\u003e\n \u003cli\u003eRecord the order and orientation of the existing wear plates, impeller, and gaskets before removal.\u003c\/li\u003e\n \u003cli\u003eClean the mating surfaces and pump cavity, removing debris and old gasket material without damaging the sealing surfaces.\u003c\/li\u003e\n \u003cli\u003eCompare the replacement components with the removed parts and confirm that the pump configuration matches the Bravo application.\u003c\/li\u003e\n \u003cli\u003eInstall the wear plates, impeller, body gasket, and water pump gasket in the correct positions. Lubricate the impeller only with a lubricant approved for marine water-pump service.\u003c\/li\u003e\n \u003cli\u003eReassemble the pump using the manufacturer's specified tightening sequence and torque values. Do not reuse damaged fasteners or sealing components.\u003c\/li\u003e\n \u003cli\u003eReopen the raw-water intake, reconnect the battery, start the engine, and inspect the pump and hose connections for leaks.\u003c\/li\u003e\n \u003cli\u003eStop the engine immediately if the pump does not prime, leaks, or shows signs of overheating.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I confirm that this kit fits my engine?\u003c\/summary\u003e\n \u003cp\u003eConfirm that your application uses a MerCruiser Bravo seawater pump and that the original pump or service record references 46-807151A14 or 46-807151A7. Also compare the existing pump configuration and all included components before ordering. Model name alone is not sufficient for final fitment confirmation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this a complete water pump assembly?\u003c\/summary\u003e\n \u003cp\u003eNo. This listing is a service kit containing the wear plates, impeller, body gasket, and water pump gasket. The pump housing or complete assembled pump is not included.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDoes this kit fit Alpha or TRS applications?\u003c\/summary\u003e\n \u003cp\u003eThe available catalog listing identifies the kit for Bravo applications only. Do not assume Alpha, TRS, inboard, or other MerCruiser fitment without matching the original part number and pump configuration.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a worn seawater pump?\u003c\/summary\u003e\n \u003cp\u003ePossible symptoms include reduced cooling-water flow, higher-than-normal operating temperature, overheating, visible leakage near the pump, or damaged and worn impeller or wear-plate surfaces. Diagnose the complete cooling system before replacing parts.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\n \u003cp\u003eInspect the impeller and related sealing surfaces during scheduled marine cooling-system service. Replacement intervals depend on operating hours, storage conditions, water quality, and the engine manufacturer's recommendations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n \u003cp\u003eThis listing is for an aftermarket replacement service kit, not a Mercury-branded OEM component. The Mercury numbers are provided as replacement references.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify the original part number, Bravo configuration, component dimensions, and pump layout before purchase and installation.\u003c\/li\u003e\n \u003cli\u003eDisconnect the battery and close the raw-water intake before servicing the pump.\u003c\/li\u003e\n \u003cli\u003eUse the manufacturer's service instructions and torque specifications for your specific engine.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended when the pump configuration or application is uncertain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723794911547,"sku":"ET-19KM003","price":108.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/ET-19KM003.png?v=1763031969"}],"url":"https:\/\/seasierra.com\/collections\/mercruiser-377hp-4-stroke-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}