{"title":"MerCruiser 4-Stroke 40-350HP Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px 0;\"\u003e\n  \u003cp\u003eFor MerCruiser 4‑Stroke 40–350HP outboard engines, this page helps you find compatible parts and service information. Inside you’ll find maintenance intervals, commonly replaced items, and troubleshooting guidance. You can also browse the main MerCruiser collection. Scroll to the bottom of this page to start browsing parts for this engine, and use the “Filter \u0026amp; Sort” controls on the collection page to narrow results by horsepower, year range, and part category\/section.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser\" style=\"display:inline-block;padding:10px 16px;border:1px solid #0b5; border-radius:6px; text-decoration:none;\" aria-label=\"Browse All MerCruiser Parts\"\u003eBrowse All MerCruiser Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:12px 0;\"\u003e\n  \u003ch2\u003eHow to Identify Your 40–350HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the serial\/nameplate: typically on the starboard side of the swivel bracket or transom bracket, and on an identification sticker under the cowling.\u003c\/li\u003e\n    \u003cli\u003eDecode the model suffix: letters often indicate shaft length (S\/L\/XL), control type (tiller\/remote), and starting\/charging features. 4‑Stroke models are clearly labeled on the cowling.\u003c\/li\u003e\n    \u003cli\u003eNote the platform: inline‑3\/inline‑4 engines are common from 40–150 HP, V6 around 175–225 HP, and high‑output 250–350 HP platforms may be larger displacement or supercharged. Cylinder count and layout help distinguish platforms.\u003c\/li\u003e\n    \u003cli\u003eFor propellers\/gearcase parts, record gearcase family (standard vs. large\/command‑thrust) and prop hub style; this affects prop, hub, and seal compatibility.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"padding:12px 0;\"\u003e\n  \u003ch2\u003eEngine Overview\u003c\/h2\u003e\n\n  \u003ch3\u003eInline‑3 \/ Inline‑4 EFI 4‑Stroke (40–115 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eInline‑3 (40–60 HP) and inline‑4 (75–115 HP) EFI, 4‑stroke, electronic ignition.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eGeneral 40–60 HP EFI triples; 75–115 HP EFI fours (tiller or remote control variants).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eGood fuel economy, quiet operation, broad parts availability, straightforward service.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eProp hub and gearcase options vary by shaft length and thrust package; verify by serial number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eInline‑4 EFI 4‑Stroke (135–150 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eInline‑4, EFI, 4‑stroke with ECM management.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003e135–150 HP EFI four‑cylinder platforms for a wide range of hulls.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eBalanced power‑to‑weight, reliable mid‑range torque, efficient cruise.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eIntake, fuel, and cooling parts can vary by year and emissions package; confirm via serial number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eV6 EFI 4‑Stroke (175–225 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eV6, EFI, 4‑stroke with ECM and multi‑coil ignition.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003e175–225 HP platforms used on multi‑species, bay, and offshore boats.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eStrong mid‑range, smooth operation, heavy‑duty gearcase options.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eSome components differ by gearcase (standard vs. heavy‑duty) and control system; verify compatibility.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eHigh‑Output Inline‑6 (Supercharged) \/ V8 4‑Stroke (250–350 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eHigh‑output 4‑stroke platforms, typically large‑displacement V8 or supercharged inline‑6 with advanced engine management.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003e250–350 HP class engines for offshore and performance use.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eExcellent top‑end power, robust charging systems, cooling and fuel components designed for heavy duty use.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eMany parts are platform‑specific (cooling modules, intake, anodes). Always confirm by serial number before ordering.\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=\"padding:12px 0;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are typical for modern 4‑stroke outboards. Always follow the maintenance schedule in your official service manual for your exact model and usage.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eUse marine‑rated 4‑stroke oil and replace the filter at each oil change.\u003c\/td\u003e\n        \u003ctd\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\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eInspect for water intrusion or metal; service sooner after impact\/grounding.\u003c\/td\u003e\n        \u003ctd\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\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd\u003eInspect at 100 hours; replace ~200–300 hours or as needed\u003c\/td\u003e\n        \u003ctd\u003eCheck gap and cylinder balance; replace sooner if fouled or misfiring.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eService more often with ethanol fuel or contamination.\u003c\/td\u003e\n        \u003ctd\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\u003eSea water pump impeller\u003c\/td\u003e\n        \u003ctd\u003eEvery 2 seasons or ~200 hours\u003c\/td\u003e\n        \u003ctd\u003eReplace sooner for weak telltale, overheat alarms, or debris ingestion.\u003c\/td\u003e\n        \u003ctd\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\u003eAnodes (zincs)\u003c\/td\u003e\n        \u003ctd\u003eInspect monthly; replace at ~50% wear\u003c\/td\u003e\n        \u003ctd\u003eSelect alloy for your water: zinc\/brackish, aluminum\/salt, magnesium\/fresh.\u003c\/td\u003e\n        \u003ctd\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\u003eGearcase seals (if leaking)\u003c\/td\u003e\n        \u003ctd\u003eAs needed\u003c\/td\u003e\n        \u003ctd\u003eAddress milky gear oil or leaks at drain plugs\/prop shaft; pressure test.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"padding:12px 0;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-service-maintenance-kits\"\u003eMerCruiser Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-impellers\"\u003eMerCruiser Impellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-fuel-filters\"\u003eMerCruiser Fuel Filters\u003c\/a\u003e\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\u003ePropellers \u0026amp; Hubs: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-propellers\"\u003eMerCruiser Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGaskets \u0026amp; Sealing: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser-gaskets\"\u003eMerCruiser Gaskets\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"padding:12px 0;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWeak telltale or overheat alarm\u003c\/td\u003e\n        \u003ctd\u003eInspect intake screen for blockage; check impeller condition and thermostat operation.\u003c\/td\u003e\n        \u003ctd\u003eWater pump impeller kit, thermostat, intake screen\/hoses\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd\u003eCheck prop hub for slip; replace fuel\/water separator; verify spark plugs and fresh fuel.\u003c\/td\u003e\n        \u003ctd\u003ePropeller\/hub, fuel filter, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHard starting or rough idle\u003c\/td\u003e\n        \u003ctd\u003eConfirm battery voltage\/grounds; inspect plugs; clean\/replace filters; consider sensor checks.\u003c\/td\u003e\n        \u003ctd\u003eSpark plugs, fuel filter, electrical sensors\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGearcase noise or metal in gear oil\u003c\/td\u003e\n        \u003ctd\u003eVerify gear oil level\/condition; inspect for fishing line at prop; pressure test for leaking seals.\u003c\/td\u003e\n        \u003ctd\u003eLower unit seal kit, bearings, prop hub\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=\"padding:12px 0;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable across different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eSome routine items fit many engines, but numerous components vary by serial range, emissions package, gearcase family, and control system. Always verify using your engine serial number.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the water pump impeller?\u003c\/summary\u003e\n    \u003cp\u003eAs a preventive service, replace about every two seasons or ~200 hours. Replace sooner if you see weak discharge flow, overheat warnings, or after debris ingestion.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change the gear oil?\u003c\/summary\u003e\n    \u003cp\u003eChange the lower unit gear lube every 100 hours or annually, and immediately if water contamination (milky oil) is detected or after an impact\/grounding event.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information helps confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the engine serial number, exact model designation, shaft length, and gearcase family. Clear photos of the nameplate and the part you need speed up verification.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px 0;\"\u003e\n  \u003cp\u003eReady to find parts? Browse the main MerCruiser collection and use Filter \u0026amp; Sort to narrow by horsepower, year, and model.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercruiser\" style=\"display:inline-block;padding:10px 16px;border:1px solid #0b5; border-radius:6px; text-decoration:none;\" aria-label=\"Shop MerCruiser Parts\"\u003eShop MerCruiser Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px;color:#555;\"\u003eIf you’re unsure about your model, send us a clear 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":"water-pump-impeller-kit-fits-mercury-mercruiser-40-350-hp-replaces-47-43026q06","title":"MerCruiser Alpha One Gen II Water Pump Service Kit with Plate – Replaces 47-8M0100526","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; 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\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis aftermarket \u003cstrong\u003ewater pump service kit with plate\u003c\/strong\u003e is designed for MerCruiser Alpha One Gen II sterndrives. It is intended for water pump service and impeller replacement, helping restore proper seawater circulation and support reliable engine cooling.\u003c\/p\u003e\n  \u003cp\u003eThe kit is listed as a replacement for MerCruiser OEM part number \u003cstrong\u003e47-8M0100526\u003c\/strong\u003e. Company catalog records also list related Mercury\/MerCruiser references including 47-43026Q06, 47-43026T11, 46-43024A7, 43026K06, 43026Q06, 43026Q5, and 47-8M0100527. Verify the exact drive model, serial number, original part and component layout before ordering.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eWater pump repair and service kit for MerCruiser stern-drive applications.\u003c\/li\u003e\n    \u003cli\u003eIncludes a water pump plate for the applicable Alpha One Gen II assembly.\u003c\/li\u003e\n    \u003cli\u003eHelps renew the impeller-driven cooling water pump during routine maintenance.\u003c\/li\u003e\n    \u003cli\u003eAftermarket replacement part; not manufactured by Mercury or MerCruiser.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eThe following numbers are catalog references associated with this service kit. They are provided for identification and cross-reference purposes only; they do not replace verification against the drive serial number and original parts.\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 Source\u003c\/th\u003e\n          \u003cth\u003eReference Number\u003c\/th\u003e\n          \u003cth\u003eReference Type\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMerCruiser\u003c\/td\u003e\n          \u003ctd\u003e47-8M0100526\u003c\/td\u003e\n          \u003ctd\u003ePrimary replacement reference\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n          \u003ctd\u003e47-43026Q06, 47-43026T11\u003c\/td\u003e\n          \u003ctd\u003eAdditional catalog references\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n          \u003ctd\u003e46-43024A7, 43026K06, 43026Q06, 43026Q5\u003c\/td\u003e\n          \u003ctd\u003eAdditional catalog references\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/MerCruiser\u003c\/td\u003e\n          \u003ctd\u003e47-8M0100527\u003c\/td\u003e\n          \u003ctd\u003eAdditional catalog reference\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eGLM Marine\u003c\/td\u003e\n          \u003ctd\u003e12080, 12043\u003c\/td\u003e\n          \u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSierra Marine\u003c\/td\u003e\n          \u003ctd\u003e18-3214, 18-3265\u003c\/td\u003e\n          \u003ctd\u003eAftermarket cross-reference\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\u003eDrive Compatibility\u003c\/h2\u003e\n  \u003cp\u003eThis product is cataloged for \u003cstrong\u003eMerCruiser Alpha One Gen II\u003c\/strong\u003e sterndrives. The company fitment record specifies Alpha One Gen II units with serial number \u003cstrong\u003eD494569 and above\u003c\/strong\u003e. Serial-number formatting can vary by catalog or drive identification label, so confirm the complete serial number before purchase.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Drive Compatibility\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003eDrive\u003c\/th\u003e\n          \u003cth\u003eSerial Condition\u003c\/th\u003e\n          \u003cth\u003eApplication\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\u003eAlpha One Gen II\u003c\/td\u003e\n          \u003ctd\u003eD494569 and above\u003c\/td\u003e\n          \u003ctd\u003eWater pump service and impeller repair\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp\u003e\u003cstrong\u003eNot confirmed for Alpha One Gen I, Bravo, Volvo Penta, Mercury\/Mariner outboard or other sterndrive applications.\u003c\/strong\u003e Do not use the broad horsepower ranges sometimes shown in marketplace listings as a substitute for drive and serial-number verification.\u003c\/p\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\u003eWater pump service and impeller repair kit with plate\u003c\/dd\u003e\n    \u003cdt\u003eApplication\u003c\/dt\u003e\n    \u003cdd\u003eMerCruiser stern drive \/ out drive\u003c\/dd\u003e\n    \u003cdt\u003eCompatible Drive\u003c\/dt\u003e\n    \u003cdd\u003eAlpha One Gen II\u003c\/dd\u003e\n    \u003cdt\u003eListed Serial Condition\u003c\/dt\u003e\n    \u003cdd\u003eD494569 and above\u003c\/dd\u003e\n    \u003cdt\u003ePrimary Replacement Reference\u003c\/dt\u003e\n    \u003cdd\u003e47-8M0100526\u003c\/dd\u003e\n    \u003cdt\u003eProduct Construction\u003c\/dt\u003e\n    \u003cdd\u003eService kit supplied with water pump plate; verify the pictured components before installation\u003c\/dd\u003e\n    \u003cdt\u003eBrand Status\u003c\/dt\u003e\n    \u003cdd\u003eAftermarket replacement, not OEM\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  \u003cp\u003eThis listing is for one water pump service kit with plate. The company record identifies the product as a service or repair kit with plate but does not provide a complete itemized quantity list. Match the supplied components to the product images and your original water pump assembly before installation.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eWater pump service kit\u003c\/li\u003e\n    \u003cli\u003eWater pump plate\u003c\/li\u003e\n    \u003cli\u003eOther service components as shown in the product images and supplied packaging\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eIndividual fasteners, seals, gaskets, keys or additional components should not be assumed unless they are visibly included with the supplied kit.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eDisconnect the battery and ensure the engine is switched off and cool.\u003c\/li\u003e\n    \u003cli\u003ePlace the sterndrive in a stable service position and follow the manufacturer’s service procedure.\u003c\/li\u003e\n    \u003cli\u003eRemove the propeller if required for safe access, observing all manufacturer safety instructions.\u003c\/li\u003e\n    \u003cli\u003eSeparate the lower unit from the upper housing only if required by the applicable water pump service procedure.\u003c\/li\u003e\n    \u003cli\u003eRemove the water pump housing, impeller, plate and related service parts being replaced.\u003c\/li\u003e\n    \u003cli\u003eClean all mating surfaces and inspect the driveshaft, keyway, housing and fasteners for wear or damage.\u003c\/li\u003e\n    \u003cli\u003eCompare the new plate and all supplied components with the original parts before assembly.\u003c\/li\u003e\n    \u003cli\u003eInstall the plate, impeller, housing and seals in the correct order and orientation for the Alpha One Gen II assembly.\u003c\/li\u003e\n    \u003cli\u003eUse appropriate lubricant during impeller installation where specified by the service manual.\u003c\/li\u003e\n    \u003cli\u003eTorque fasteners to the MerCruiser service-manual specification. Do not guess torque values.\u003c\/li\u003e\n    \u003cli\u003eReassemble the lower unit, refill lubricants if required and reinstall the propeller according to the manufacturer’s procedure.\u003c\/li\u003e\n    \u003cli\u003eRun the engine only with an adequate water supply and confirm proper cooling-water flow before normal operation.\u003c\/li\u003e\n  \u003c\/ol\u003e\n  \u003cp\u003eProfessional installation is recommended. Always use the service manual for the exact Alpha One Gen II drive and serial range.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat drive does this kit fit?\u003c\/summary\u003e\n    \u003cp\u003eThe company catalog specifies MerCruiser Alpha One Gen II sterndrives, with a listed serial condition of D494569 and above. Confirm the complete serial number and compare the original water pump assembly before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill this kit fit an Alpha One Gen I sterndrive?\u003c\/summary\u003e\n    \u003cp\u003eFitment for Alpha One Gen I is not confirmed. Gen I and Gen II water pump assemblies can use different components, so do not install this kit unless the drive and part references match the specified application.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill this kit fit a Mercury or Mariner outboard?\u003c\/summary\u003e\n    \u003cp\u003eOutboard fitment is not confirmed for this product. This listing is specifically for MerCruiser stern-drive water pump service and should not be selected solely by horsepower or a similar-looking impeller.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are common signs that the water pump needs service?\u003c\/summary\u003e\n    \u003cp\u003ePossible signs include overheating, reduced cooling-water flow, an overheating alarm or a damaged impeller found during inspection. 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\u003eReplacement intervals depend on operating hours, storage conditions, water quality and the manufacturer’s maintenance schedule. Inspect and replace the impeller according to the MerCruiser service recommendations for your drive.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes the kit include every component shown in the original description?\u003c\/summary\u003e\n    \u003cp\u003eThe company record identifies a water pump service kit with plate but does not provide a full itemized contents list. Confirm the actual supplied components and images before installation; do not assume that every seal, gasket, key or fastener is included.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this an OEM MerCruiser part?\u003c\/summary\u003e\n    \u003cp\u003eNo. This is an aftermarket replacement service kit intended for the specified application. The listed OEM and aftermarket numbers are reference numbers only.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need special tools for installation?\u003c\/summary\u003e\n    \u003cp\u003eInstallation generally requires standard marine mechanical tools, and a torque wrench is recommended. Additional tools may be necessary to separate the lower unit and service the water pump safely. Follow the applicable service manual.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShipping speed and cost\u003c\/summary\u003e\n    \u003cp\u003eShipping options, delivery estimates and costs are shown at checkout and depend on the destination and selected service.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWarranty and returns\u003c\/summary\u003e\n    \u003cp\u003eWarranty and return eligibility are governed by the current store policies. Contact support before installation if the supplied parts differ from the listing or do not match your original assembly.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify the Alpha One Gen II drive designation, complete serial number and original part before ordering.\u003c\/li\u003e\n    \u003cli\u003eDo not rely on a horsepower range alone to determine sterndrive fitment.\u003c\/li\u003e\n    \u003cli\u003eCompare the supplied plate, impeller and related components with the original assembly before installation.\u003c\/li\u003e\n    \u003cli\u003eDisconnect the battery and follow all manufacturer safety procedures during service.\u003c\/li\u003e\n    \u003cli\u003eNever run the engine without an adequate water supply.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement, not an OEM Mercury or MerCruiser component.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended for safe and reliable operation.\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\u003eMarine Parts Support\u003c\/strong\u003e — We provide replacement parts for common marine service and repair applications.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Confirm drive, serial and original-part details before ordering for the best fit.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAftermarket Value\u003c\/strong\u003e — Practical replacement options for routine marine maintenance and repair.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723973759291,"sku":"20KM003","price":28.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Mercury_40-300_HP_47-43026Q06_-_JLM_MARINE-8289922.jpg?v=1763038917"}],"url":"https:\/\/seasierra.com\/collections\/mercruiser-4-stroke-40-350hp-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}