{"title":"MerCruiser 4-Stroke Outboard Parts (35-300HP) | Marine Engine Components","description":"\u003csection id=\"hero\" style=\"padding:16px;border:1px solid #e5e7eb;border-radius:8px;max-width:1200px;margin:0 auto 20px auto;\"\u003e\n  \u003cp\u003eThis page focuses on MerCruiser 4‑Stroke outboard engines in the 35–300 HP range and helps you quickly find compatible parts and service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Mercury Outboard collection. Scroll to the bottom of this page to start browsing parts for this engine, and remember you can use the Filter \u0026amp; Sort controls on the collection page to narrow results by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block;margin-top:8px;padding:10px 14px;background:#0b74de;color:#fff;text-decoration:none;border-radius:6px;\"\u003eBrowse All Mercury Outboard Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width:1200px;margin:0 auto 24px auto;\"\u003e\n  \u003ch2\u003eHow to Identify Your 35–300 HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eSerial\/nameplate location: typically on the port side transom bracket; you may also find a label under the cowl. Photograph this plate before ordering.\u003c\/li\u003e\n    \u003cli\u003eModel code and suffix: note HP, shaft length (S\/L\/XL), and control type (tiller vs. remote). Suffix letters often indicate features and year-series details.\u003c\/li\u003e\n    \u003cli\u003ePlatform distinction: within 35–115 HP you’ll commonly see inline EFI FourStroke models; higher outputs may be 3.4L V6 (175–225) or 4.6L V8 (250–300), including certain Verado configurations.\u003c\/li\u003e\n    \u003cli\u003eFour‑stroke specifics: confirm oil filter and oil capacity by serial number; thermostat, anodes, and water pump kits can differ by platform and year.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"max-width:1200px;margin:0 auto 24px auto;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n\n  \u003ch3\u003eInline EFI FourStroke (approximately 35–115 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;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;\"\u003eInline‑3 or Inline‑4 EFI four‑stroke, remote or tiller control, various shaft lengths.\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;\"\u003e40\/50\/60 FourStroke; 75\/90\/115 EFI FourStroke (model codes vary by year and shaft length).\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;\"\u003eLight weight, strong mid‑range torque, good fuel economy, simple routine service.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eOil filter, anodes, and water pump kits are serial‑specific; verify via nameplate to ensure correct parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003e3.4L V6 FourStroke (approximately 175–225 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;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;\"\u003eNaturally aspirated 3.4L V6 four‑stroke EFI with advanced corrosion protection and robust charging output.\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;\"\u003e175\/200\/225 FourStroke variants across multiple shafts and rigging options.\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;\"\u003eExcellent mid‑range power, quiet operation, shared maintenance parts among HP ratings.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCertain filters, thermostats, and anode kits are platform‑specific; confirm by serial to avoid mismatches.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003e4.6L V8 FourStroke \/ Verado (approximately 250–300 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;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;\"\u003e4.6L V8 four‑stroke family (including select Verado applications) with refined intake and advanced engine management.\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;\"\u003e250\/300 FourStroke and Verado configurations, multiple rigging and gearcase options.\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;\"\u003eHigh output with smooth delivery, strong charging system, durable gearcase options for heavy boats.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVerado‑branded variants may require different rigging components and anodes than standard FourStroke. Always match parts to your exact serial.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003cp style=\"margin-top:12px;color:#555;\"\u003eNote: While the term “MerCruiser” commonly refers to sterndrive\/inboard products, the 35–300 HP outboard range corresponds to Mercury FourStroke\/Verado platforms. Use your serial number and the Mercury Outboard collection below for the most accurate parts match.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"max-width:1200px;margin:0 auto 24px auto;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines; always follow your engine’s official service manual and local operating conditions.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;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;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eUse FC‑W marine oil; replace filter and crush washer (if used).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/oil-filters\" style=\"color:#0b74de;\"\u003eOil 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 (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eCheck for water or metal on drain plug; replace seals if contaminated.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\" style=\"color:#0b74de;\"\u003eMercury Lower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eInspect 100 hours; replace 300 hours\/3 years\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eGap to spec; replace sooner if fouled or corroded.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\" style=\"color:#0b74de;\"\u003eSpark Plugs\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 (inline\/VST)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eEvery 100–200 hours or 1–2 years\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eReplace more often in ethanol\/salt or if water is found.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\" style=\"color:#0b74de;\"\u003eFuel 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;\"\u003eEvery 2 years or 200 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eInspect annually; sandy\/silty use may require yearly replacement.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\" style=\"color:#0b74de;\"\u003eMercury Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eAnodes (sacrificial)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eInspect every 50 hours\/each season; replace when 50% gone\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eChoose alloy to match water type (zinc\/aluminum\/magnesium).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\" style=\"color:#0b74de;\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eThermostat\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eInspect every 2 years; replace if overheat\/poor warm‑up\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eVaries by platform (inline, V6, V8). Match by serial.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"color:#0b74de;\"\u003eMercury Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePropeller \u0026amp; hardware inspection\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck at each removal\/seasonally\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect hub, cotter, and thrust washer; remove line from shaft.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\" style=\"color:#0b74de;\"\u003ePropellers\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=\"max-width:1200px;margin:0 auto 24px auto;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service Kits – \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"color:#0b74de;\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System – \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\" style=\"color:#0b74de;\"\u003eMercury Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System – \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\" style=\"color:#0b74de;\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical – \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\" style=\"color:#0b74de;\"\u003eElectrical Items\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\" style=\"color:#0b74de;\"\u003eSpark Plugs\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eLower Unit \u0026amp; Seals – \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\" style=\"color:#0b74de;\"\u003eMercury Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropulsion – \u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\" style=\"color:#0b74de;\"\u003ePropellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection – \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\" style=\"color:#0b74de;\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"max-width:1200px;margin:0 auto 24px auto;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;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 tell‑tale or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eInspect intake screens for debris; verify impeller condition; test thermostat.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eWater pump repair kit, thermostat, gaskets.\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 for damaged prop\/cavitation; replace fuel filter; inspect plugs; confirm clean fuel.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003ePropeller, fuel filter, spark plugs, fuel injector service parts.\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;\"\u003ePrime bulb; check stale fuel\/water; inspect plugs and electrical connections.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eFuel filters, spark plugs, electrical\/service items, fuel injectors.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eGearcase noise or metal in oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eVerify oil level; check for water intrusion; inspect propshaft seals and fishing line.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f0f0f0;\"\u003eLower unit seal kits, propeller hardware.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eTrim\/tilt slow or won’t hold\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck fluid level and battery voltage; listen for motor operation; inspect for leaks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eTrim motor assemblies, seals.\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=\"max-width:1200px;margin:0 auto 24px auto;\"\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\u003eOften no. Inline FourStroke, 3.4L V6, and 4.6L V8 engines use platform‑specific filters, anodes, and cooling parts. Always match by serial number and confirm rigging type (standard FourStroke vs. Verado) before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule of thumb, every 2 years or ~200 hours, and yearly in sandy\/silty or heavy‑use conditions. Replace immediately if overheat or weak tell‑tale occurs.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eChange gear oil every 100 hours or annually. Inspect for milky color (water) or metal on the magnetic drain plug; if found, service seals before returning to use.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information is needed to confirm compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the engine serial number, exact HP and model, approximate year, shaft length (S\/L\/XL), and control\/rigging details. A clear photo of the nameplate helps prevent ordering mistakes.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px;border:1px solid #e5e7eb;border-radius:8px;max-width:1200px;margin:0 auto 32px auto;\"\u003e\n  \u003cp\u003eReady to find the right components? Browse the Mercury outboard collection by horsepower, year, and model to compare compatible parts.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block;margin:8px 0 6px 0;padding:10px 14px;background:#0b74de;color:#fff;text-decoration:none;border-radius:6px;\"\u003eShop Mercury Outboard Parts\u003c\/a\u003e\n  \u003cp style=\"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":"water-pump-impeller-kit-fits-mercury-mercruiser-35-300-hp-replaces-8m0100526-47-43026q06","title":"4-Stroke Water Pump Impeller Kit with Plate – for Honda BF75\/BF90 AT \u0026 AW Early Mercury Gear Cases – Replaces 06193-ZW1-305","description":"\u003csection\u003e\n\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003e4-stroke water pump impeller service kit with plate\u003c\/strong\u003e is designed for specified Honda BF75 and BF90 AT\/AW outboards using an early Mercury gear case. It provides the key water-pump service components needed to renew the impeller and plate in the cooling-water pump assembly.\u003c\/p\u003e\n\u003cp\u003eThe kit is an aftermarket replacement associated with Honda Marine OEM reference \u003cstrong\u003e06193-ZW1-305\u003c\/strong\u003e. Confirm the exact engine model, gear-case configuration, and existing part number before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFor Honda BF75\/BF90 AT and AW applications with an early Mercury gear case.\u003c\/li\u003e\n  \u003cli\u003eIncludes a water pump impeller and matching plate for the specified application.\u003c\/li\u003e\n  \u003cli\u003eSupports restoration of proper cooling-water circulation when the original impeller or plate is worn.\u003c\/li\u003e\n  \u003cli\u003eApplication-specific replacement; not a universal fit for all Honda, Mercury, or MerCruiser engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Reference\u003c\/h2\u003e\n\u003cp\u003eUse the following manufacturer reference to compare with the part removed from your engine.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Reference\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eReference Type\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\u003eHonda Marine\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n        \u003ctd\u003e06193-ZW1-305\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Gear-Case Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis kit is intended for the application listed below. Model, suffix, gear-case style, and serial-number conditions must all match your engine before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Gear-Case Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eGear-Case Condition\u003c\/th\u003e\n        \u003cth\u003eReference\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda Marine\u003c\/td\u003e\n        \u003ctd\u003eBF75 AT \/ BF90 AT\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eEarly Mercury gear case\u003c\/td\u003e\n        \u003ctd\u003e06193-ZW1-305\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda Marine\u003c\/td\u003e\n        \u003ctd\u003eBF75 AW \/ BF90 AW\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eEarly Mercury gear case\u003c\/td\u003e\n        \u003ctd\u003e06193-ZW1-305\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The fitment is limited to the specified BF75\/BF90 AT or AW configuration with the applicable early Mercury gear case. Do not rely on horsepower alone to determine compatibility.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003e4-Stroke Water Pump Impeller Service Kit with Plate\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eHonda BF75\/BF90 AT and AW outboards with an early Mercury gear case\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eReplacement service part for the water pump assembly\u003c\/dd\u003e\n  \u003cdt\u003eIncluded Component Type\u003c\/dt\u003e\n  \u003cdd\u003eWater pump impeller and water pump plate\u003c\/dd\u003e\n  \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n  \u003cdd\u003eHonda Marine 06193-ZW1-305\u003c\/dd\u003e\n  \u003cdt\u003eBrand Status\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement; not an OEM-branded component\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\u003c\/li\u003e\n  \u003cli\u003e1 x Water pump plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePackage contents are limited to the impeller and plate identified for this application. Additional gaskets, seals, keys, fasteners, or housing components are not stated as included and should not be assumed to be part of this kit.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eTurn off the engine, disconnect the battery where applicable, and allow the engine to cool completely.\u003c\/li\u003e\n  \u003cli\u003eUse the manufacturer’s service procedure for removing the lower unit and accessing the water pump.\u003c\/li\u003e\n  \u003cli\u003eRecord the original component orientation before disassembly.\u003c\/li\u003e\n  \u003cli\u003eRemove the worn impeller and plate, then clean the pump-cover and mating surfaces thoroughly.\u003c\/li\u003e\n  \u003cli\u003eInspect the pump housing, drive key, shaft, gaskets, and seals. Replace any damaged parts before reassembly.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement plate and impeller in the correct orientation for the specified BF75\/BF90 gear-case configuration.\u003c\/li\u003e\n  \u003cli\u003eLubricate the impeller with an appropriate water-based lubricant during installation; do not use petroleum grease on the impeller unless the service manual specifically permits it.\u003c\/li\u003e\n  \u003cli\u003eReassemble the water pump and lower unit, tightening fasteners to the manufacturer’s specified torque values.\u003c\/li\u003e\n  \u003cli\u003eAfter installation, run the engine using the correct water supply procedure and verify a steady cooling-water tell-tale stream.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eMaintenance \u0026amp; Troubleshooting\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common signs of a failing water pump impeller?\u003c\/summary\u003e\n  \u003cp\u003eTypical signs include a weak or missing tell-tale stream, an overheating warning, unusually high operating temperature, or visible cracking and deformation of the impeller vanes. Stop operation if the engine overheats and inspect the cooling system before further use.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this kit fit every Honda BF75 or BF90?\u003c\/summary\u003e\n  \u003cp\u003eNo. The listed application is limited to BF75\/BF90 AT and AW models using the applicable early Mercury gear case. Verify the model designation, gear-case configuration, and existing reference number before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes the kit include the water-pump housing?\u003c\/summary\u003e\n  \u003cp\u003eNo. This product is an impeller-and-plate service kit. A water-pump housing and other components are not stated as included.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eAre gaskets, O-rings, and an impeller key included?\u003c\/summary\u003e\n  \u003cp\u003eThey are not stated as included in this product package. Inspect the existing parts and consult the engine service manual to determine whether additional service components are required.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM Honda part?\u003c\/summary\u003e\n  \u003cp\u003eNo. This is an aftermarket replacement kit that references Honda Marine OEM part number 06193-ZW1-305 for application comparison.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the complete engine model and gear-case configuration before purchase.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the engine without an adequate cooling-water supply.\u003c\/li\u003e\n  \u003cli\u003eNever run the engine if the tell-tale stream is absent or the engine shows signs of overheating.\u003c\/li\u003e\n  \u003cli\u003eUse the manufacturer’s service manual for removal, installation, inspection, and torque specifications.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when lower-unit or water-pump service is unfamiliar.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eApplication-focused marine replacement parts for routine service and repair.\u003c\/li\u003e\n  \u003cli\u003eClear part-number and fitment information to help match the correct component.\u003c\/li\u003e\n  \u003cli\u003eAftermarket solutions for maintaining dependable marine cooling-system performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723967467835,"sku":"19KM007","price":37.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Mercury_35-300_HP_47-43026Q06_-_JLM_MARINE-8286357.jpg?v=1763038683"}],"url":"https:\/\/seasierra.com\/collections\/mercruiser-4-stroke-outboard-parts-35-300hp-marine-engine-components.oembed","provider":"SeaSierra","version":"1.0","type":"link"}