{"title":"Mercury 4-Stroke 18HP Outboard Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e5e5; border-radius:8px;\"\u003e\n \u003cp\u003eThis page is tailored for Mercury 4‑Stroke 18HP outboard engines. Use it to find compatible parts and practical service information, including maintenance intervals, frequently replaced items, and troubleshooting guidance. You can also browse our main Mercury collection. Scroll to the bottom of this page to start browsing parts for this engine, and on the collection page 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\/mercury-outboard-parts\" style=\"display:inline-block; padding:10px 14px; background:#1a73e8; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse All Mercury 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 18HP Model\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eFind the serial plate: typically on the transom bracket or swivel bracket. Record the full serial number to confirm exact parts.\u003c\/li\u003e\n \u003cli\u003eMercury uses serial numbers (rather than model years) to determine precise configuration. Note start type (manual\/electric), tiller vs. remote, and shaft length (S 15\", L 20\").\u003c\/li\u003e\n \u003cli\u003e4‑Stroke indicators: oil fill cap and dipstick under the cowl; earlier small 4‑strokes may be carbureted, while later versions moved to EFI—this can affect filters and electrical components.\u003c\/li\u003e\n \u003cli\u003eShared platform: many 18HP 4‑Stroke portables share service parts with the 15–20HP family; always verify with your serial number before ordering.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"margin-top:24px;\"\u003e\n \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n \u003ch3\u003ePortable 4‑Stroke Twin (shared with 15–20HP family)\u003c\/h3\u003e\n \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eFeature\u003c\/th\u003e\n \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eDescription\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eConfiguration\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eInline‑2 SOHC 4‑Stroke; earlier units commonly carbureted; later iterations often EFI for improved cold start and economy.\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;\"\u003e18HP portable variants in tiller or remote, manual or electric start, short (15\") or long (20\") shaft. Many service items align with 15\/20HP siblings.\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;\"\u003eQuiet operation, good fuel economy, easy portability, broad parts availability.\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 serial number for exact plug type, filter style (carb vs EFI), and impeller kit. Many wear items and gearcase seals interchange across the family.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"margin-top:24px;\"\u003e\n \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n \u003cp\u003eIntervals below are general guidelines for portable 4‑Stroke outboards. Always follow the official service manual for your exact serial range and 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 #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 \u0026amp; filter\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e100 hrs or annually\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eUse marine FC‑W 4‑Stroke oil; replace filter at each oil change.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/oil-filters\"\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;\"\u003e100 hrs or annually\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eInspect for metal or water contamination; renew drain plug gaskets.\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\"\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;\"\u003e100 hrs or annually\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eCheck gap and insulator color; replace if fouled or worn.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\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 style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eFuel filter \/ water‑separating filter\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e100 hrs or sooner in dusty\/dirty fuel\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eReplace inline filter; consider a remote water separator for ethanol fuels.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\n\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e | \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-pumps\"\u003eFuel Pumps\u003c\/a\u003e\n\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 (fresh) or annually (sandy\/silt)\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eReplace sooner if tell‑tale is weak or engine overheats.\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\"\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 hrs; replace when 50% gone\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eUse the correct alloy for fresh, brackish, or salt water.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;\"\u003ePropeller \u0026amp; hardware check\u003c\/td\u003e\n \u003ctd style=\"padding:8px;\"\u003eEvery trip \/ seasonally\u003c\/td\u003e\n \u003ctd style=\"padding:8px;\"\u003eInspect blades and hub; service cotter\/nut; carry a spare for remote trips.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003cp style=\"font-size:12px; color:#666;\"\u003e*Intervals are typical for recreational use; shorten for heavy duty, commercial, or harsh environments.\u003c\/p\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\/service-maintenance-kits\"\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\"\u003eMercury Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n \u003cli\u003eGearcase \u0026amp; Sealing: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\"\u003eMercury Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n \u003cli\u003eFuel System: \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-pumps\"\u003eFuel Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n \u003cli\u003eIgnition \/ Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/starters\"\u003eStarters\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 \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"margin-top:24px;\"\u003e\n \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eSymptom\u003c\/th\u003e\n \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eCheck First\u003c\/th\u003e\n \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #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 water pump output; check thermostat for sticking.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eWater pump kit, thermostat, intake screens, anodes\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eCheck fuel quality, replace fuel filter, inspect prop for damage; verify spark plugs; EFI models: battery voltage and connectors.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eFuel filter, propeller, spark plugs, fuel pump\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eUse fresh fuel; confirm choke\/enrichment function (carb) or idle control (EFI); verify plug gap and air leaks.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eSpark plugs, fuel filter, sensors (EFI), gaskets\/hoses\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eGearcase noise \/ metal in gear oil\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eDrain and inspect oil; check for water intrusion; replace seals and plug gaskets as needed.\u003c\/td\u003e\n \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eLower unit seal kit, drain plug gaskets, gear lube\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd style=\"padding:8px;\"\u003eVibration or cavitation\u003c\/td\u003e\n \u003ctd style=\"padding:8px;\"\u003eInspect prop blades and hub; ensure correct shaft length for transom height; check anti‑ventilation plate depth.\u003c\/td\u003e\n \u003ctd style=\"padding:8px;\"\u003ePropeller, hardware kit, prop nut\/cotter\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 across 15\/18\/20HP Mercury 4‑Strokes?\u003c\/summary\u003e\n \u003cp\u003eMany wear items (impellers, gearcase seals, some filters and plugs) are shared within the small portable family. Always confirm by serial number, shaft length, and start\/control configuration before ordering.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhen should I replace the impeller?\u003c\/summary\u003e\n \u003cp\u003eFor portable outboards, replace the impeller every two seasons in clean freshwater or annually in sandy\/silt or saltwater service. Replace sooner if the tell‑tale weakens or the engine overheats.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should I change gear oil?\u003c\/summary\u003e\n \u003cp\u003eAt least once per year or every 100 hours, whichever comes first, and immediately after any impact or if water contamination is suspected.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat information do you need to verify part compatibility?\u003c\/summary\u003e\n \u003cp\u003ePlease provide the full Mercury serial number from the bracket, horsepower (18HP), 4‑Stroke confirmation, shaft length (S or L), and whether the engine is manual or electric start, tiller or remote.\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 for your Mercury 4‑Stroke 18HP? Browse the main Mercury collection and use the filters to narrow by horsepower, year range, and 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:#1a73e8; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop Mercury Outboard Parts\u003c\/a\u003e\n \u003cp style=\"margin-top:8px; font-size:12px; color:#666;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need—we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"fuel-filter-assembly-fits-mercruiser-tohatsu-omc-parsun-outboards-replaces-paf4-05000300","title":"Fuel Filter Assembly – Fits Mercruiser, Tohatsu, OMC, Parsun Outboards (Replaces PAF4-05000300)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis \u003cstrong\u003eFuel Filter Assembly – Fits Mercruiser, Tohatsu, OMC, Parsun Outboards (Replaces PAF4-05000300)\u003c\/strong\u003e ensures optimal engine performance by trapping dirt, water, and other contaminants before they reach the engine. Designed as a direct OEM replacement, it is compatible with a wide range of small to mid-sized marine engines that use 6mm (1\/4\") fuel line connections.\u003c\/p\u003e\n \u003cp\u003eIt serves as a direct interchange for Mercruiser parts 35-16248 and 35-8M0157133; Tohatsu 346-02230-0, 369-02230-0, and 396-02230-0; OMC 5040140; and Parsun F4-05000300.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eInstalls in-line with standard 6 mm hose barb fittings.\u003c\/li\u003e\n \u003cli\u003eProtects sensitive fuel system components from particle and water damage.\u003c\/li\u003e\n \u003cli\u003eDurable plastic housing designed for the marine environment.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eSuperseded By\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercruiser\u003c\/td\u003e\n \u003ctd\u003e35-16248\u003c\/td\u003e\n \u003ctd\u003e35-8M0157133, 8M0157133\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e346-02230-0\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e369-02230-0\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e396-02230-0\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOMC\u003c\/td\u003e\n \u003ctd\u003e5040140\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eParsun\u003c\/td\u003e\n \u003ctd\u003eF4-05000300\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\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm your engine model and year in the table below.\u003c\/p\u003e\n \u003cp\u003eCompatible with a variety of Tohatsu 4-stroke outboards from 4 to 40 HP. Please verify your specific model is listed.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Tohatsu 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\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM9.8\u003c\/td\u003e\n\u003ctd\u003e9.8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM9.9\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM15\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM18\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM40\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS4\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS5\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS6\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS8\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS9.9\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS15\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e346-02230-0\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\u003eFuel Filter Assembly\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eIn-line\u003c\/dd\u003e\n \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003e6 mm hose fittings\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003ePlastic\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eLength: 120 mm (12.0 cm), Width: 100 mm (10.0 cm), Height: 35 mm (3.5 cm)\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eHose barb\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\u003e1x Fuel Filter Assembly\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\u003eShut off the fuel supply valve and place absorbent rags underneath the work area to catch any spills.\u003c\/li\u003e\n \u003cli\u003eCarefully note the direction of fuel flow indicated on the old filter body, typically marked with an arrow.\u003c\/li\u003e\n \u003cli\u003eLoosen the hose clamps on both sides of the filter and gently twist the hoses to break the seal.\u003c\/li\u003e\n \u003cli\u003eRemove the old filter and immediately plug the fuel lines to prevent leakage.\u003c\/li\u003e\n \u003cli\u003eInstall the new filter, ensuring the flow arrow points in the correct direction (towards the engine).\u003c\/li\u003e\n \u003cli\u003eSecurely tighten the hose clamps on the new filter connections. Do not overtighten.\u003c\/li\u003e\n \u003cli\u003eTurn the fuel supply back on, prime the engine if necessary, and carefully inspect for any leaks before starting the engine.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I know if this filter fits my engine?\u003c\/summary\u003e\n \u003cp\u003eThe best way to confirm fitment is by matching your existing part number to one of the cross-references in our Part Number Matrix. You should also verify your engine model is listed in the compatibility table and that your fuel line is a 6 mm diameter.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a clogged or failing fuel filter?\u003c\/summary\u003e\n \u003cp\u003eCommon symptoms include engine hesitation or sputtering, difficulty starting, rough idling, reduced power and acceleration, or stalling. A visual inspection may also reveal debris or water in the filter bowl.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow often should this fuel filter be replaced?\u003c\/summary\u003e\n \u003cp\u003eAs a best practice, in-line fuel filters should be replaced annually or every 100 hours of operation, whichever comes first. Refer to your engine’s service manual for the manufacturer-recommended interval.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs any special sealant needed for the hose connections?\u003c\/summary\u003e\n \u003cp\u003eNo. The hose barb fittings are designed to create a secure seal when the fuel line is pushed on and a hose clamp is properly tightened. Do not use any thread sealant or tape.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify images and specifications against 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. Brand names and part numbers are used for identification purposes only.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance. Always handle fuel system components in a well-ventilated area away from ignition sources.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or quality control.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50602602791227,"sku":"PAF4-05000300","price":99.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/PAF4-05000300_06c469ee-6a31-45af-8155-591634b34bde.jpg?v=1758594930"},{"product_id":"fuel-filter-fits-mercury-mariner-outboard-9-9-50hp-replaces-35-8m0088825-853733a2","title":"Fuel Filter – Fits Mercury\/Mariner Outboard 9.9-50HP (Replaces 35-8M0088825, 853733A2)","description":"\u003cstyle\u003e\n\/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n.ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n\/* Base table styles *\/\ntable.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\ntable.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 *\/\ntable.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n}\n\n\/* Small screen optimization *\/\n@media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n}\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis is a high-quality water separating \u003cstrong\u003eFuel Filter – Fits Mercury\/Mariner Outboard 9.9-50HP\u003c\/strong\u003e engines, including various 2-stroke and 4-stroke EFI models. It is designed to protect your marine engine by removing water, dust, and other contaminants from the fuel supply, ensuring reliable performance and preventing fuel system damage.\u003c\/p\u003e\n\u003cp\u003eThis filter serves as a direct replacement for Mercury part numbers 35-8M0088825, 853733A2, 853733T02, 853733T03, 35-853733A1, 853733A03 and Tohatsu 346-02230-0, 3B7-02230-0, and 3AD-02230-0.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls in-line for easy access and replacement.\u003c\/li\u003e\n\u003cli\u003eEffectively separates water from gasoline to protect the fuel system.\u003c\/li\u003e\n\u003cli\u003eIncludes one fuel filter for a complete service.\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\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e853733A2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e853733T02\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e853733T03\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e35-853733A1\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e853733A03\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e346-02230-0\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e3B7-02230-0\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003e3AD-02230-0\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis filter fits a wide range of Mercury and Mariner 2-stroke and 4-stroke EFI outboards from 9.9HP to 50HP.\u003c\/p\u003e\n\u003cp\u003eIt is also compatible with various Tohatsu and Nissan 25-40HP models. Please verify your specific part number.\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\u003c\/td\u003e\n \u003ctd\u003e9.9 (2 CYL.)\u003c\/td\u003e\n \u003ctd\u003e9.9\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eInternational\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e15 (2 CYL.)\u003c\/td\u003e\n \u003ctd\u003e15\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eInternational\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e18 (2 CYL.)\u003c\/td\u003e\n \u003ctd\u003e18\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eInternational\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e25 (2 CYL.)\u003c\/td\u003e\n \u003ctd\u003e25\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eSN- 0N055505 \u0026amp; UP\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e25 Jet (2 CYL.)\u003c\/td\u003e\n \u003ctd\u003e25\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eInternational\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e25 EFI (3 CYL.)\u003c\/td\u003e\n \u003ctd\u003e25\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e0R106999 \u0026amp; Up\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e25 Carb SeaPro\u003c\/td\u003e\n \u003ctd\u003e25\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e0R051710 \u0026amp; Up\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e30 (2 CYL.)\u003c\/td\u003e\n \u003ctd\u003e30\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eSN- 0N055505 \u0026amp; UP\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e30 EFI (3 CYL.)\u003c\/td\u003e\n \u003ctd\u003e30\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e0R106999 \u0026amp; Up\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 (3 CYL.)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eSN- 0N055505 \u0026amp; UP\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 (International)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eInternational\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 LIGHTNING (International)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eInternational\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 LIGHTNING XR (International)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eInternational\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e40 MXL SEAPRO\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMariner\u003c\/td\u003e\n \u003ctd\u003e40 LIGHTNING (International)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eInternational\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMariner\u003c\/td\u003e\n \u003ctd\u003e40 LIGHTNING XR (International)\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003eInternational\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMariner\u003c\/td\u003e\n \u003ctd\u003e40 MXL MARATHON\u003c\/td\u003e\n \u003ctd\u003e40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMariner\u003c\/td\u003e\n \u003ctd\u003e50MH\u003c\/td\u003e\n \u003ctd\u003e50\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e35-8M0088825\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e25-40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e346-02230-0, 3B7-02230-0, 3AD-02230-0\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eVarious\u003c\/td\u003e\n \u003ctd\u003e25-40\u003c\/td\u003e\n \u003ctd\u003e2-Stroke \u0026amp; 4-Stroke\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e\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\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater Separating Fuel Filter\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eIn-line\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\u003ePlastic\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eWhite\/Clear\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e10.0 cm H x 7.5 cm W x 9.5 cm L\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.19 kg (0.42 lb)\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 Year\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eWater separating capability\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 Fuel Filter (Replaces 35-8M0088825\/853733A2)\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\u003eTurn off the engine and disconnect the battery. Relieve fuel system pressure according to your engine's service manual.\u003c\/li\u003e\n\u003cli\u003ePlace a container under the old filter to catch any spilled fuel. Note the direction of fuel flow indicated by an arrow on the old filter.\u003c\/li\u003e\n\u003cli\u003eLoosen the clamps and detach the fuel lines from the old filter.\u003c\/li\u003e\n\u003cli\u003eRemove the old filter from its mounting bracket.\u003c\/li\u003e\n\u003cli\u003eInstall the new filter, ensuring the fuel flow arrow points in the correct direction (towards the engine).\u003c\/li\u003e\n\u003cli\u003eSecurely attach the fuel lines and tighten the clamps.\u003c\/li\u003e\n\u003cli\u003ePrime the fuel system as per your service manual, check for leaks, and reconnect the battery before starting the engine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I confirm this filter fits my specific engine model?\u003c\/summary\u003e\n\u003cp\u003eThe best way to ensure a match is to compare the part number on your existing filter to the numbers listed in our Part Number Matrix. You can also check your engine's model, horsepower, and serial number against our compatibility table. When in doubt, consult your service manual or a qualified marine mechanic.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the recommended replacement interval?\u003c\/summary\u003e\n\u003cp\u003eFor optimal engine protection, it is recommended to replace your fuel filter annually or every 100 hours of operation, whichever comes first. Refer to your engine's service manual for manufacturer-specific guidelines.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the signs of a clogged or failing fuel filter?\u003c\/summary\u003e\n\u003cp\u003eCommon symptoms include engine hesitation, sputtering, loss of power, difficulty starting, or stalling. A visual inspection of the clear bowl may also show water or debris.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this filter be cleaned and reused?\u003c\/summary\u003e\n\u003cp\u003eNo, this fuel filter is a disposable, single-use item. Attempting to clean it will not restore its filtration efficiency and can lead to fuel system contamination and engine damage. Always replace it with a new filter.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50602603086139,"sku":"35-8M0088825","price":20.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/35-8M0088825_eb8536c8-8d1f-4e03-a590-bc00e672ec6c.jpg?v=1758594937"},{"product_id":"water-pump-impeller-fits-tohatsu-nissan-9-9hp-20hp-replaces-334-65021-0-47-803748-19210-935-003-5040046","title":"Water Pump Impeller – Fits Tohatsu \u0026 Nissan 9.9HP-20HP (Replaces 334-65021-0, 47-803748, 19210-935-003, 5040046)","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\u003eWater Pump Impeller – Fits Tohatsu \u0026amp; Nissan 9.9HP-20HP\u003c\/strong\u003e is designed for reliable performance in 2-stroke and 4-stroke outboard motors. It serves as a crucial component for engine cooling, fitting a wide range of Tohatsu models (M9.9, M12, M15, M18, MFS9.9, MFS15, MFS18, MFS20) and Nissan outboards (NS9.9, NS15, NS18, NSF9.9, NSF15, NSF18, NSF20).\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for several OEM and aftermarket part numbers, including Tohatsu 334-65021-0, Nissan 334-65021-0, Mercury 47-803748, Honda 19210-935-003, Evinrude 5040046, and Sierra 18-8921.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Installs as a direct replacement for the original part.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironment:\u003c\/strong\u003e Engineered with a plastic hub for saltwater use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInclusions:\u003c\/strong\u003e Includes one high-quality water pump impeller.\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\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e334-65021-0 \/ 334650210 \/ 334650210M\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003e334-65021-0 \/ 334650210 \/ 334650210M\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-803748 \/ 8M0214944\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003e19210-935-003\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eEvinrude\u003c\/td\u003e\n\u003ctd\u003e5040046\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-8921\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 is known to fit the following Tohatsu 2-stroke and 4-stroke outboard models.\u003c\/p\u003e\n\u003cp\u003eIt is also compatible with the listed Nissan 2-stroke and 4-stroke outboard models.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Compatible Engine Models\"\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\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM9.9\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM15\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM18\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS9.9\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS15\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS18\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS20\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNS9.9\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNS15\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNS18\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF9.9\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF15\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF18\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF20\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e334-65021-0\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\u003eWater Pump Impeller\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\u003ePlastic Hub\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eOverall Diameter: 41.11mm, Height: 23.51mm, Internal Shaft Insert Diameter: 13.88mm\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e12g (0.42oz)\u003c\/dd\u003e\n \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e8\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eFor saltwater use\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 Water Pump Impeller (334-65021-0)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and remove the engine cover before starting.\u003c\/li\u003e\n \u003cli\u003eLocate and unbolt the lower unit (gearcase) from the engine's midsection and carefully lower it.\u003c\/li\u003e\n \u003cli\u003eRemove the water pump housing bolts and lift the housing to expose the old impeller.\u003c\/li\u003e\n \u003cli\u003eTake note of the blade direction of the old impeller before removing it from the driveshaft.\u003c\/li\u003e\n \u003cli\u003eClean the interior of the water pump housing and inspect the wear plate for scoring or damage.\u003c\/li\u003e\n \u003cli\u003eSlide the new impeller onto the driveshaft. Turn the driveshaft clockwise while pressing down to correctly seat the blades inside the housing cup.\u003c\/li\u003e\n \u003cli\u003eReinstall the water pump housing, ensuring any gaskets are properly aligned.\u003c\/li\u003e\n \u003cli\u003eReattach the lower unit to the engine, refill the gear oil, and secure all bolts.\u003c\/li\u003e\n \u003cli\u003eOnce assembled, test the engine in water to confirm a steady stream from the cooling system's tell-tale port.\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 specific engine?\u003c\/summary\u003e\n \u003cp\u003eThe best way to confirm fitment is to match your original part number to the references in our Part Number Matrix. You can also check your model against the Engine \u0026amp; Model Compatibility table. If you are still unsure, please check the images and specifications against your old part before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a failing water pump impeller?\u003c\/summary\u003e\n \u003cp\u003eCommon signs include a weak or non-existent water stream from the engine's tell-tale port, engine overheating alarms, or a noticeable decrease in engine performance. A visual inspection may show cracked, stiff, or broken blades.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should I replace my outboard's impeller?\u003c\/summary\u003e\n \u003cp\u003eAs a general maintenance rule, it is recommended to replace the water pump impeller every 1-2 years or every 100-200 hours of use, whichever comes first. This interval may be shorter if you frequently operate in sandy, silty, or saltwater conditions.\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":50717907353915,"sku":"jzf12111107","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/jzf12111107.png?v=1762938121"},{"product_id":"thermostat-fits-johnson-evinrude-6-250-hp-v4-v6-outboard-motors-replaces-5005440-434841","title":"Thermostat – Fits Johnson\/Evinrude 6-250 HP V4\/V6 Outboard Motors (Replaces 5005440, 434841)","description":"\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis high-quality \u003cstrong\u003eMarine Thermostat – Fits Johnson Evinrude 6-250 HP V4\/V6 Outboard Motors (Replaces 5005440, 434841)\u003c\/strong\u003e is designed for a wide range of Johnson\/Evinrude 2-Stroke V4\/V6 engines (6-250 HP, 1973–2006) and select 4-Stroke models (9.9-15 HP, 1994–2001). Its 143°F (62°C) temperature rating ensures your engine's cooling system operates correctly for optimal performance and longevity.\u003c\/p\u003e\n\u003cp\u003eThis thermostat is a direct replacement for Johnson\/Evinrude part numbers 5005440, 8330720, 378065, 393659, 434841, 437414, and 508626, as well as Mercury 62981, 66850, 75692, 75692B and Sierra 18-3543 or 18-3553.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eEngineered as a direct-fit replacement for straightforward installation.\u003c\/li\u003e\n \u003cli\u003eOpens at 143°F (62°C) to maintain correct engine operating temperature.\u003c\/li\u003e\n \u003cli\u003eManufactured to meet or exceed OEM specifications for reliable performance.\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\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003e5005440\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003e8330720\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003e378065\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003e393659\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003e434841\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003e437414\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003e508626\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e62981\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e66850\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e75692\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e75692B\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-3543\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-3553\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Johnson\/Evinrude motors, this thermostat fits a broad range of 2-stroke and 4-stroke models produced between 1973 and 2006.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Johnson\/Evinrude Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003eModel\u003c\/th\u003e\n \u003cth\u003eRated HP\u003c\/th\u003e\n \u003cth\u003eStroke\u003c\/th\u003e\n \u003cth\u003eYears\u003c\/th\u003e\n \u003cth\u003eOEM Part No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003eFour-Stroke\u003c\/td\u003e\n \u003ctd\u003e9.9\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–2001\u003c\/td\u003e\n \u003ctd\u003e5005440, 434841\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003eFour-Stroke\u003c\/td\u003e\n \u003ctd\u003e15\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e1994–2001\u003c\/td\u003e\n \u003ctd\u003e5005440, 434841\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003eV4 Models\u003c\/td\u003e\n \u003ctd\u003e40–250\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1973–2006\u003c\/td\u003e\n \u003ctd\u003e5005440, 434841\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003eV6 Models\u003c\/td\u003e\n \u003ctd\u003e60–250\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1973–2006\u003c\/td\u003e\n \u003ctd\u003e5005440, 434841\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n \u003ctd\u003eVarious Models\u003c\/td\u003e\n \u003ctd\u003e6–55\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1973–2006\u003c\/td\u003e\n \u003ctd\u003e5005440, 434841\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eFor Mercury\/Mariner motors, the part serves as a cross-reference. Please verify your specific application before ordering.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Mercury\/Mariner Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\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\u003c\/td\u003e\n \u003ctd\u003e62981, 66850, 75692, 75692B\u003c\/td\u003e\n \u003ctd\u003eCross-reference application only\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eMarine Outboard Thermostat\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eTemperature Rating\u003c\/dt\u003e\n\u003cdd\u003e143°F (62°C)\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\u003eBrass\/Stainless Steel (varies by manufacturer)\u003c\/dd\u003e\n \u003cdt\u003eOperating Temperature\u003c\/dt\u003e\n\u003cdd\u003e62°C (143°F) opening temperature\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eVaries by manufacturer (typically 1-year limited warranty)\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eManufactured to OEM specifications\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 Thermostat (5005440)\u003c\/li\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x Thermostat Seals (0329319)\u003c\/span\u003e (Note: Seals are not included by all manufacturers)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery and ensure the engine is cool to the touch.\u003c\/li\u003e\n \u003cli\u003eLocate the thermostat housing on the engine block or cylinder head.\u003c\/li\u003e\n \u003cli\u003ePlace a drain pan under the housing and slowly loosen the bolts to drain the coolant.\u003c\/li\u003e\n \u003cli\u003eRemove the housing cover, old thermostat, and any existing gasket or seal material.\u003c\/li\u003e\n \u003cli\u003eClean the mating surfaces of the housing and cover thoroughly.\u003c\/li\u003e\n \u003cli\u003eInstall the new thermostat, ensuring it is oriented correctly.\u003c\/li\u003e\n \u003cli\u003ePlace the new seal or gasket onto the housing.\u003c\/li\u003e\n \u003cli\u003eReinstall the 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.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery, start the engine, and check for leaks and proper temperature gauge operation.\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 thermostat is failing?\u003c\/summary\u003e\n \u003cp\u003eCommon signs include engine overheating (gauge reads high), or the engine not reaching operating temperature (gauge reads low). You may also notice poor performance, increased fuel consumption, or steam from the engine.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs 143°F the correct temperature for my engine?\u003c\/summary\u003e\n \u003cp\u003eThis 143°F (62°C) thermostat is the specified temperature for the listed Johnson\/Evinrude and cross-referenced models. Using the correct temperature is critical for engine performance and preventing carbon buildup.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eCan I test my old thermostat?\u003c\/summary\u003e\n \u003cp\u003eYes. Suspend the thermostat in a pot of water with a thermometer. Heat the water and observe the temperature at which it starts to open. If it fails to open at or near its rated temperature (143°F), it should be replaced.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDoes this thermostat fit both 2-stroke and 4-stroke engines?\u003c\/summary\u003e\n \u003cp\u003eYes, it is designed for a wide range of 2-Stroke V4\/V6 engines from 1973-2006 and specific 4-Stroke 9.9\/15 HP models from 1994–2001. Always verify your exact model and year in the compatibility chart.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDo I need to replace the seals at the same time?\u003c\/summary\u003e\n \u003cp\u003eIt is highly recommended to replace the thermostat seals or gaskets whenever the thermostat is replaced to ensure a leak-proof seal. While this kit includes seals, availability may vary by supplier, so confirm contents upon purchase.\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\t\u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\t\u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\t\u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717907648827,"sku":"GH-TH20005-J","price":21.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/GH-TH20005-J.png?v=1762938132"},{"product_id":"fuel-pump-fits-mercury-mariner-tohatsu-nissan-9-9-30-hp-johnson-evinrude-15-hp-replaces-803529t04-3h8-04000-1","title":"Fuel Pump – Fits Mercury\/Mariner\/Tohatsu\/Nissan 9.9-30 HP \u0026 Johnson\/Evinrude 15 HP (Replaces 803529T04, 3H8-04000-1)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis pulse-driven mechanical \u003cstrong\u003eFuel Pump\u003c\/strong\u003e is designed for a wide range of outboard motors, including Mercury\/Mariner 9.9–30 HP 4-Stroke models (2005–present), Tohatsu\/Nissan 9.9–30 HP 4-Stroke models (2002–2018), and select Johnson\/Evinrude 15 HP 2-Stroke models.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct cross-reference for Mercury part numbers 803529T04 and 803529A04, Tohatsu\/Nissan 3H8-04000-1, and Johnson\/Evinrude 5041064.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFeatures a simple two-bolt mounting system for straightforward installation.\u003c\/li\u003e\n\u003cli\u003eConstructed with a corrosion-resistant metal and plastic housing to withstand demanding marine environments.\u003c\/li\u003e\n\u003cli\u003eIncludes a new O-ring and spring clamps for a complete seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003cth\u003ePart Number\u003c\/th\u003e\n \u003cth\u003eNotes\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e803529A04\u003c\/td\u003e\n \u003ctd\u003eSuperseded by 803529T04.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e803529T04\u003c\/td\u003e\n \u003ctd\u003ePrimary replacement number.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n \u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n \u003ctd\u003eInterchangeable with 3H8040001 and 3H8040001M.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eJohnson \/ Evinrude\u003c\/td\u003e\n \u003ctd\u003e5041064\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor Mercury\/Mariner:\u003c\/strong\u003e This pump fits a wide range of 4-stroke models from 9.9 to 30 HP built from 2005 to present. As model-specific data is broad, please verify the part number 803529T04 matches your service manual.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor Tohatsu\/Nissan:\u003c\/strong\u003e Extensive compatibility with Tohatsu and Nissan 4-stroke engines from 9.9 to 30 HP. Check your specific model and year against the list below to ensure a correct fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor Johnson\/Evinrude:\u003c\/strong\u003e Compatibility is limited to certain 15 HP 2-stroke models. It is critical to confirm that OEM part number 5041064 is the correct reference for your engine 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\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eVarious 4-Stroke\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2005–Present\u003c\/td\u003e\n\u003ctd\u003e803529T04\u003c\/td\u003e\n\u003ctd\u003eReplaces 803529A04\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eVarious 4-Stroke\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2005–Present\u003c\/td\u003e\n\u003ctd\u003e803529T04\u003c\/td\u003e\n\u003ctd\u003eReplaces 803529A04\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eVarious 4-Stroke\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2005–Present\u003c\/td\u003e\n\u003ctd\u003e803529T04\u003c\/td\u003e\n\u003ctd\u003eReplaces 803529A04\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eVarious 4-Stroke\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2005–Present\u003c\/td\u003e\n\u003ctd\u003e803529T04\u003c\/td\u003e\n\u003ctd\u003eReplaces 803529A04\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eVarious 4-Stroke\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2005–Present\u003c\/td\u003e\n\u003ctd\u003e803529T04\u003c\/td\u003e\n\u003ctd\u003eReplaces 803529A04\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS9.9E EFI\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2017–2018\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eFuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS9.9B, MFS9.9B2\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2002–2004\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eInlet Manifold, Fuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS15E EFI\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2017–2018\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eFuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS15B, MFS15B2, MFS15C\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2002–2012\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eInlet Manifold, Fuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS20E EFI\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2017–2018\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eFuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS20C, MFS20D\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2011–2016\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eInlet Manifold, Fuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS25A\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2002–2005\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eInlet Manifold, Fuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS25B\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2006–2014\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eFuel Pump, Fuel Rail \u0026amp; Vapor Separator\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS25C\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2015–2018\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eFuel System\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS30A\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2002–2005\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eInlet Manifold, Fuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS30B\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2005–2014\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eFuel Pump, Fuel Rail \u0026amp; Vapor Separator\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS30C\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2015–2018\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eFuel System\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF9.9B, NSF9.9B2\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2002–2004\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eInlet Manifold, Fuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF15B, NSF15B2, NSF15C\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2002–2013\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eInlet Manifold, Fuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF20C\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2008\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eInlet Manifold, Fuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF25A\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2002–2005\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eInlet Manifold, Fuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF25B\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2006–2014\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eFuel Pump, Fuel Rail \u0026amp; Vapor Separator\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF30A\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2002–2005\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eInlet Manifold, Fuel Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eNissan\u003c\/td\u003e\n\u003ctd\u003eNSF30B\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2005–2014\u003c\/td\u003e\n\u003ctd\u003e3H8-04000-1\u003c\/td\u003e\n\u003ctd\u003eFuel Pump, Fuel Rail \u0026amp; Vapor Separator\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eJohnson\u003c\/td\u003e\n\u003ctd\u003eVarious Models\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1993–2007\u003c\/td\u003e\n\u003ctd\u003e5041064\u003c\/td\u003e\n\u003ctd\u003eLimited compatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eEvinrude\u003c\/td\u003e\n\u003ctd\u003eVarious Models\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1993–2007\u003c\/td\u003e\n\u003ctd\u003e5041064\u003c\/td\u003e\n\u003ctd\u003eLimited compatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eMechanical Fuel Pump\u003c\/dd\u003e\n \u003cdt\u003eDrive System\u003c\/dt\u003e\n\u003cdd\u003ePulse-Driven\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eTwo-bolt mounting system\u003c\/dd\u003e\n \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n \u003cdt\u003eConnection Type\u003c\/dt\u003e\n\u003cdd\u003eHose barb fittings\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eCorrosion-resistant metal and plastic\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\/Silver\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eApproximately 89 × 76 × 38 mm (3.5 × 3.0 × 1.5 inches)\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003eApproximately 0.07 kg (0.15 lbs)\u003c\/dd\u003e\n \u003cdt\u003eWorking Pressure\u003c\/dt\u003e\n\u003cdd\u003eMeets OEM specifications\u003c\/dd\u003e\n \u003cdt\u003eOperating Temperature\u003c\/dt\u003e\n\u003cdd\u003e-20 to 80°C (-4 to 176°F)\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 x Fuel Pump Assembly\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e1 x O-Ring\u003c\/span\u003e\u003c\/li\u003e\n \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x Metal Spring Clamps\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eAlways work in a well-ventilated area and disconnect the negative battery terminal before starting.\u003c\/li\u003e\n \u003cli\u003eRelieve fuel system pressure according to your service manual and place rags to catch any fuel spills.\u003c\/li\u003e\n \u003cli\u003eCarefully disconnect the fuel inlet, outlet, and pulse hoses from the old pump.\u003c\/li\u003e\n \u003cli\u003eUnbolt and remove the old pump assembly and its gasket or O-ring.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the mounting surface on the engine block to ensure a proper seal.\u003c\/li\u003e\n \u003cli\u003ePosition the new pump with its O-ring, then install and tighten the mounting bolts to the specified torque.\u003c\/li\u003e\n \u003cli\u003eSecurely reconnect all hoses using the new spring clamps provided.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery, prime the fuel system as needed, and start the engine. Carefully inspect the pump and all connections for any leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a failing fuel pump?\u003c\/summary\u003e\n \u003cp\u003eSymptoms include engine hesitation or stumbling, especially at high speeds, difficulty starting, rough idling, or a complete failure to start. A visual inspection may also reveal fuel leaking from the pump housing or connected lines.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow can I be sure this fits my Mercury\/Mariner engine?\u003c\/summary\u003e\n \u003cp\u003eBecause Mercury uses this pump across many models, the best way to confirm fitment is by matching your old part number to 803529T04. While it fits most 9.9–30 HP 4-stroke models from 2005-present, checking the part number is the only way to guarantee compatibility.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhy is Johnson\/Evinrude compatibility listed as \"limited\"?\u003c\/summary\u003e\n \u003cp\u003eThis pump only fits specific Johnson\/Evinrude 15 HP 2-stroke models that use OEM part number 5041064. Its primary design is for 4-stroke applications, so you must confirm this exact part number for a 2-stroke engine before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this fuel pump compatible with ethanol-blended fuels?\u003c\/summary\u003e\n \u003cp\u003eYes, this aftermarket pump is built with materials designed to handle standard ethanol-blended gasoline (up to E10). Using fuels with higher ethanol concentrations is not recommended and may reduce the service life of the pump and other fuel system components.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is a \"pulse-driven\" pump?\u003c\/summary\u003e\n \u003cp\u003eA pulse-driven mechanical pump uses the changing pressure within the engine's crankcase to operate. As the piston moves, the pressure fluctuation moves a diaphragm inside the pump, which draws fuel from the tank and sends it to the carburetor without needing any electrical power.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717907878203,"sku":"QM-FP24095","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/QM-FP24095.png?v=1762938134"},{"product_id":"water-pump-impeller-fits-tohatsu-nissan-9-9-20-hp-mercury-8-20-hp-replaces-334-65021-0-47-803748","title":"Water Pump Impeller – Fits Tohatsu\/Nissan 9.9–20 HP \u0026 Mercury 8–20 HP (Replaces 334-65021-0, 47-803748)","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\u003eWater Pump Impeller – Fits Tohatsu\/Nissan 9.9–20 HP \u0026amp; Mercury 8–20 HP (Replaces 334-65021-0, 47-803748)\u003c\/strong\u003e is a critical component for maintaining your engine's cooling system. It is designed for Tohatsu\/Nissan 9.9-20 HP (2-Stroke \u0026amp; 4-Stroke), Mercury\/Mariner 8-20 HP (4-Stroke), and is cross-compatible with select Honda 7.5-10 HP outboard motors.\u003c\/p\u003e\n\u003cp\u003eThis part provides a direct interchange for OEM part numbers Tohatsu 334-65021-0, Mercury 47-803748\/8M0214944, Honda 19210-935-003, Evinrude 5040046, and Sierra 18-8921.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls as a direct OEM-equivalent replacement.\u003c\/li\u003e\n\u003cli\u003eFeatures a key-driven shaft mount for secure fitting.\u003c\/li\u003e\n\u003cli\u003eMade from salt water resistant rubber for durability in marine environments.\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\u003eTohatsu\/Nissan\u003c\/td\u003e\n \u003ctd\u003e334-65021-0 \/ 334650210 \/ 334650210M\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-803748 \/ 8M0214944\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003e19210-935-003\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eEvinrude\u003c\/td\u003e\n \u003ctd\u003e5040046\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8921\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\u003eFits a range of Tohatsu \u0026amp; Nissan 2-stroke and 4-stroke outboard models from 9.9 HP to 20 HP.\u003c\/p\u003e\n\u003cp\u003eDesigned for Mercury \u0026amp; Mariner 4-stroke outboards from 8 HP to 20 HP, including Bigfoot gearcase models.\u003c\/p\u003e\n\u003cp\u003eCross-compatible with specific Honda and Evinrude models as listed.\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\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\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eMFS9.9\/15\/18\/20\u003c\/td\u003e\n \u003ctd\u003e9.9-20\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e334-65021-0\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eNSF9.9\/15\/18\/20\u003c\/td\u003e\n \u003ctd\u003e9.9-20\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e334-65021-0\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTohatsu\u003c\/td\u003e\n \u003ctd\u003eM9.9\/15\/18\/20\u003c\/td\u003e\n \u003ctd\u003e9.9-20\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e334-65021-0\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNissan\u003c\/td\u003e\n \u003ctd\u003eNS9.9\/15\/18\/20\u003c\/td\u003e\n \u003ctd\u003e9.9-20\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e334-65021-0\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003eF8\/F9.9\/F10\/F15\/F18\/F20\u003c\/td\u003e\n \u003ctd\u003e8-20\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e47-803748\u003c\/td\u003e\n \u003ctd\u003eAlso fits Bigfoot gearcase models\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Marine\u003c\/td\u003e\n \u003ctd\u003e8M0135803\u003c\/td\u003e\n \u003ctd\u003e9.9-20\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e8M0214944\u003c\/td\u003e\n \u003ctd\u003eService kit part number\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHonda\u003c\/td\u003e\n \u003ctd\u003eBF7.5\/BF10\u003c\/td\u003e\n \u003ctd\u003e7.5-10\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e19210-935-003\u003c\/td\u003e\n \u003ctd\u003eCross-compatible\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eEvinrude\u003c\/td\u003e\n \u003ctd\u003eE15\u003c\/td\u003e\n \u003ctd\u003e15\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e5040046\u003c\/td\u003e\n \u003ctd\u003eCross-compatible\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\u003eWater Pump Impeller\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM Replacement\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eKey-driven Shaft Mount\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eHigh-quality Rubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eShaft Mount with Key\u003c\/dd\u003e\n \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eSalt water resistant\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 (334-65021-0\/47-803748)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the spark plug wires and battery cables for safety.\u003c\/li\u003e\n \u003cli\u003ePlace a drain pan under the gearcase and remove the drain plug to empty the gear oil.\u003c\/li\u003e\n \u003cli\u003eUnbolt and carefully lower the gearcase (lower unit) from the outboard's main housing.\u003c\/li\u003e\n \u003cli\u003eLocate the water pump housing on top of the gearcase and remove its retaining bolts.\u003c\/li\u003e\n \u003cli\u003eSlide the housing up and off the driveshaft to expose the old impeller. Note the orientation of the vanes.\u003c\/li\u003e\n \u003cli\u003eRemove the old impeller and key. Clean any debris or corrosion from the housing and wear plate.\u003c\/li\u003e\n \u003cli\u003eInstall the new key and slide the new impeller onto the driveshaft. Rotate the shaft clockwise while pushing down to seat the vanes correctly.\u003c\/li\u003e\n \u003cli\u003eApply a light coat of marine grease to the inside of the housing and reinstall it.\u003c\/li\u003e\n \u003cli\u003eRe-bolt the water pump housing to the specified torque.\u003c\/li\u003e\n \u003cli\u003eReattach the gearcase to the outboard, ensuring the driveshaft, shift shaft, and water tube align correctly.\u003c\/li\u003e\n \u003cli\u003eRefill the gearcase with new lubricant and start the engine in water to verify proper water flow from the tell-tale outlet.\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 when to replace my water pump impeller?\u003c\/summary\u003e\n \u003cp\u003eSigns of a failing impeller include a weak or intermittent water stream from the \"tell-tale\" outlet, engine overheating alarms, or a noticeable drop in cooling performance. It's recommended to replace it as part of regular annual service, or every 100-200 hours of use, whichever comes first.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the symptoms of complete impeller failure?\u003c\/summary\u003e\n \u003cp\u003eComplete failure will result in a total loss of cooling water flow, leading to rapid engine overheating, which can cause severe and permanent damage. You will likely get an overheat warning on your console or engine management system.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this impeller compatible with both 2-stroke and 4-stroke engines?\u003c\/summary\u003e\n \u003cp\u003eYes, as specified in the compatibility table, this impeller fits a range of both 2-stroke and 4-stroke models from Tohatsu and Nissan, and 4-stroke models from Mercury\/Mariner and Honda.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eCan I install this myself?\u003c\/summary\u003e\n \u003cp\u003eWhile DIY installation is possible for those with mechanical experience, it involves removing the lower unit of your outboard. We recommend professional installation to ensure correct seating of the impeller, proper alignment of shafts, and to prevent damage to the engine.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eMy engine model is listed, but the year is not. Will it fit?\u003c\/summary\u003e\n \u003cp\u003eThis part is listed by engine model and horsepower range. While specific year ranges are not provided, it is designed to fit the models listed. Always compare the photos and part numbers to your existing impeller to be certain. When in doubt, consult a professional mechanic.\u003c\/p\u003e´\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat is the difference between this and an OEM impeller?\u003c\/summary\u003e\n \u003cp\u003eThis is an aftermarket replacement part, not an original equipment manufacturer (OEM) component. It is engineered to meet or exceed OEM specifications for fit, form, and function, using high-quality, salt-water resistant rubber for reliable performance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow fast is shipping, and what is the cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options will appear at checkout where available for your location.\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 number. Returns are accepted within our standard return window for items that are unused and in their original packaging.\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 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 quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717907976507,"sku":"24KM103-QM","price":18.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24KM103-QM.png?v=1762938137"},{"product_id":"water-pump-impeller-fits-mercury-mariner-8-20-hp-four-stroke-replaces-47-803748","title":"Water Pump Impeller – Fits Mercury\/Mariner 8-20 HP Four-Stroke (Replaces 47-803748)","description":"\u003csection\u003e\n\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n \/* Base table styles *\/\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n }\n\n \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n table.ss-table th {\n white-space:nowrap; \/* Do not wrap *\/\n word-break:normal; \/* Don’t break words *\/\n letter-spacing:normal; \/* Prevent theme styles from stretching letters *\/\n font-weight:600;\n background:#f8fafc;\n }\n\n \/* Small screen optimization *\/\n @media (max-width:480px){\n table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller – Fits Mercury\/Mariner 8-20 HP Four-Stroke Outboards (Replaces 47-803748)\u003c\/strong\u003e is a crucial cooling system component designed for Mercury and Mariner 8, 9.9, 10, 15, and 20 HP four-stroke outboard motors manufactured between 2005 and 2023. It ensures proper water circulation to prevent engine overheating.\u003c\/p\u003e\n\u003cp\u003eThis part is a direct interchange for Mercury part numbers 47-803748, 47-8M0214944, 47-8M0135803, 47-803748002; Sierra 18-8921; and CEF Marine 500383.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered as a direct replacement for original equipment.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable neoprene rubber for reliable performance.\u003c\/li\u003e\n\u003cli\u003eIncludes one impeller for a complete replacement.\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 \u003cth\u003eSuperseded By\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\u003e47-803748\u003c\/td\u003e\n \u003ctd\u003e47-8M0214944\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-8M0135803\u003c\/td\u003e\n \u003ctd\u003e47-8M0214944\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e47-803748002\u003c\/td\u003e\n \u003ctd\u003e47-8M0214944\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-8921\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCEF Marine\u003c\/td\u003e\n \u003ctd\u003e500383\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\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Mercury and Mariner models, it is critical to verify your engine's serial number falls within the specified ranges 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\u003c\/td\u003e\n \u003ctd\u003e8 HP (209cc)\u003c\/td\u003e\n \u003ctd\u003e8\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2005–2023\u003c\/td\u003e\n \u003ctd\u003e47-803748\/47-8M0214944\u003c\/td\u003e\n \u003ctd\u003eSerial #: 0P325500 \u0026amp; Up, 0R042475 \u0026amp; Up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e9.9 HP (209cc)\u003c\/td\u003e\n \u003ctd\u003e9.9\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2005–2023\u003c\/td\u003e\n \u003ctd\u003e47-803748\/47-8M0214944\u003c\/td\u003e\n \u003ctd\u003eSerial #: 0P325500 \u0026amp; Up, 0R042475 \u0026amp; Up, 0N059858 \u0026amp; Up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e10 HP (2CYL)\u003c\/td\u003e\n \u003ctd\u003e10\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2005–2023\u003c\/td\u003e\n \u003ctd\u003e47-803748\/47-8M0214944\u003c\/td\u003e\n \u003ctd\u003eSerial #: 0R575531-0R833819\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e15 HP (2CYL)\u003c\/td\u003e\n \u003ctd\u003e15\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2005–2023\u003c\/td\u003e\n \u003ctd\u003e47-803748\/47-8M0214944\u003c\/td\u003e\n \u003ctd\u003eSerial #: 0R235949-0R833819, 0N001590 \u0026amp; Up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e15 HP Sea Pro\u003c\/td\u003e\n \u003ctd\u003e15\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2005–2023\u003c\/td\u003e\n \u003ctd\u003e47-803748\/47-8M0214944\u003c\/td\u003e\n \u003ctd\u003eSerial #: 0R051685-0R123564, 0R123565 \u0026amp; Up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e18 HP (2CYL)\u003c\/td\u003e\n \u003ctd\u003e18\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2005–2023\u003c\/td\u003e\n \u003ctd\u003e47-803748\/47-8M0214944\u003c\/td\u003e\n \u003ctd\u003eSerial #: 0N001590-0N055284, 0N055285 \u0026amp; Up\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e20 HP (2CYL)\u003c\/td\u003e\n \u003ctd\u003e20\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2005–2023\u003c\/td\u003e\n \u003ctd\u003e47-803748\/47-8M0214944\u003c\/td\u003e\n \u003ctd\u003eSerial #: 0R235168-0R833819\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMariner\u003c\/td\u003e\n \u003ctd\u003e20 HP\u003c\/td\u003e\n \u003ctd\u003e20\u003c\/td\u003e\n \u003ctd\u003e4-Stroke\u003c\/td\u003e\n \u003ctd\u003e2008\u003c\/td\u003e\n \u003ctd\u003e47-803748\/47-8M0214944\u003c\/td\u003e\n \u003ctd\u003eModels: 7F20201ZK, 7F20211ZK, 7F20302ZK, 7F20311ZK, 7F20312ZK, 7F20411ZK, 7F20412ZK\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\u003eWater Pump Impeller\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement for original equipment\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e41.2 mm diameter × 23.8 mm height (1.62 in × 0.94 in)\u003c\/dd\u003e\n \u003cdt\u003eHub Shaft Diameter\u003c\/dt\u003e\n\u003cdd\u003e14.0 mm (0.55 in)\u003c\/dd\u003e\n \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e6\u003c\/dd\u003e\n \u003cdt\u003eInternal Shaft Insert Diameter\u003c\/dt\u003e\n\u003cdd\u003e16.03 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 (47-803748\/47-8M0214944)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the engine's battery and remove the lower unit (gearcase).\u003c\/li\u003e\n \u003cli\u003eUnbolt and carefully remove the water pump housing cover.\u003c\/li\u003e\n \u003cli\u003eObserve the rotational direction of the old impeller's blades before removal.\u003c\/li\u003e\n \u003cli\u003eRemove the old impeller, key, gaskets, and wear plate.\u003c\/li\u003e\n \u003cli\u003eThoroughly clean the inside of the pump housing and all mating surfaces.\u003c\/li\u003e\n \u003cli\u003eLightly lubricate the new impeller and the inside of the pump housing with marine-grade silicone grease.\u003c\/li\u003e\n \u003cli\u003eInstall the new wear plate, gasket, and drive key.\u003c\/li\u003e\n \u003cli\u003eSlide the new impeller onto the driveshaft while turning the shaft clockwise to correctly seat the blades.\u003c\/li\u003e\n \u003cli\u003eReinstall the water pump housing with a new gasket and tighten bolts to the manufacturer's specified torque.\u003c\/li\u003e\n \u003cli\u003eReattach the lower unit and test the engine's cooling system at the ramp, ensuring a steady tell-tale stream.\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 is the right one for my motor?\u003c\/summary\u003e\n \u003cp\u003eThe best way to ensure compatibility is to check your engine's model, year, and serial number against the detailed list in our Engine \u0026amp; Model Compatibility table. Even if your HP and year match, serial number ranges are critical for confirming the fit.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the common signs of a failing water pump impeller?\u003c\/summary\u003e\n \u003cp\u003eCommon symptoms include the engine overheating alarm sounding, a weak or non-existent water stream from the \"tell-tale\" outlet port, and in some cases, a steamy exhaust. Failure to replace a worn impeller can lead to severe engine damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should I replace my outboard's impeller?\u003c\/summary\u003e\n \u003cp\u003eAs a general maintenance rule, it is recommended to replace the water pump impeller every 1 to 2 years or every 100-200 hours of operation, whichever comes first. This interval can be shorter if you frequently operate in sandy, silty, or saltwater conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this aftermarket impeller as good as the original Mercury part?\u003c\/summary\u003e\n \u003cp\u003eOur aftermarket impellers are manufactured to meet or exceed OEM specifications using high-quality neoprene rubber for durability and performance. While not an OEM part, it offers a reliable and cost-effective alternative without compromising on quality.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs any lubricant required during installation?\u003c\/summary\u003e\n \u003cp\u003eYes, applying a light coat of marine-grade silicone grease or a soap-and-water mixture to the impeller blades and inside the pump housing will ease installation and prevent damage to the impeller during the first dry start.\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 an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials. All our parts are manufactured in an ISO 9002 facility and are batch-inspected for quality and consistency.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow fast is shipping and what does it cost?\u003c\/summary\u003e\n \u003cp\u003eWe ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free to most regions; expedited options will appear at checkout if they are available for your location.\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 part is covered by a 1-year warranty against manufacturing defects under normal use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for parts that are unused and in their original condition. See our full policy page or reach out for instructions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify images and specifications against your original part before purchase. If anything differs—even if your model appears on the compatibility list—do not purchase.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement component, not an Original Equipment Manufacturer (OEM) part.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is highly recommended for safety, proper function, and to prevent engine damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Enjoy free standard delivery to most regions worldwide, typically within 5–15 days.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — We offer fair pricing by eliminating intermediaries, without ever compromising on materials or quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717908009275,"sku":"17IT004R","price":17.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17IT004R.png?v=1762938139"},{"product_id":"water-pump-impeller-repair-kit-fits-mercury-marine-13-5-25-hp-outboards-replaces-mercury-47-85089t7-47-85089q4","title":"Water Pump Impeller Repair Kit for Mercury and Force 13.5–25 HP Outboards – Replaces Mercury 47-85089T7 and 47-85089Q4","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003ewater pump impeller repair kit\u003c\/strong\u003e is designed for selected Mercury Marine and Force outboard engines. It provides replacement components for servicing the lower-unit cooling system on specified Mercury 4-stroke and 2-stroke 13.5 HP, 15 HP, 18 HP, and 25 HP models from 1984–2005, as well as selected Force 25 HP engines manufactured between 1996 and 1998. Always confirm the exact engine model, year, serial number, and original component before ordering.\u003c\/p\u003e\n\u003cp\u003eThe kit is listed as a replacement for Mercury part numbers \u003cstrong\u003e47-85089T7\u003c\/strong\u003e and \u003cstrong\u003e47-85089Q4\u003c\/strong\u003e, with aftermarket reference numbers \u003cstrong\u003eSierra 18-3215\u003c\/strong\u003e and \u003cstrong\u003eGLM 12107\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Location:\u003c\/strong\u003e Water pump assembly in the lower-unit gearcase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpeller Material:\u003c\/strong\u003e Marine-grade CR-neoprene for water-pump service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWear Plate Material:\u003c\/strong\u003e Stainless steel SS316 for corrosion resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Kit:\u003c\/strong\u003e Includes an impeller, wear plate, and gaskets for the listed applications.\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 the following references together with your original part and engine identification to check compatibility.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-85089Q4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3215\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e12107\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\u003eCompatibility depends on the complete engine configuration. Confirm the brand, model, horsepower, stroke, production year, and serial-number range before purchase.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMercury Marine:\u003c\/strong\u003e Listed applications include selected 4-stroke and 2-stroke 13.5 HP, 15 HP, 18 HP, and 25 HP outboards manufactured from 1984–2005. Some applications require a specific serial-number range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eForce:\u003c\/strong\u003e Listed compatibility includes selected 25 HP models manufactured from 1996–1998 with serial numbers E127700–E344999.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eReference Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e13.5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–2005\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eVerify exact model and serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–2005\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eVerify exact model and serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–2005\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eVerify exact model and serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–2005\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eVerify exact model and serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25 XD\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–2005\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eVerify exact model and serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25 SeaPro\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–2005\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eVerify exact model and serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e3 Cylinder\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eUp to 2005\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eSerial number E268781 and later.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForce\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003e1996–1998\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eSerial numbers E127700–E344999.\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 Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater pump impeller repair kit\u003c\/dd\u003e\n\u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eLower-unit gearcase water pump assembly\u003c\/dd\u003e\n\u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade CR-neoprene\u003c\/dd\u003e\n\u003cdt\u003eWear Plate Material\u003c\/dt\u003e\n\u003cdd\u003eMarine-grade SS316 stainless steel\u003c\/dd\u003e\n\u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eAftermarket replacement kit for selected Mercury Marine and Force outboard applications\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 × Impeller, references 47-85089-3 \/ 47-85089-10\u003c\/li\u003e\n\u003cli\u003e1 × Wear plate, reference 85083\u003c\/li\u003e\n\u003cli\u003e2 × Gaskets, reference 27-993261\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the battery and place the outboard in neutral.\u003c\/li\u003e\n\u003cli\u003eRemove the lower unit from the engine midsection according to the manufacturer's service procedure.\u003c\/li\u003e\n\u003cli\u003ePlace the lower unit on a stable workbench and remove the water-pump housing fasteners.\u003c\/li\u003e\n\u003cli\u003eLift off the housing and note the orientation of the old impeller, key, gaskets, and wear plate.\u003c\/li\u003e\n\u003cli\u003eClean all mating surfaces and remove old gasket material and sealant residue.\u003c\/li\u003e\n\u003cli\u003eInstall the new wear plate and gaskets. Lightly lubricate the housing and impeller with a suitable marine lubricant.\u003c\/li\u003e\n\u003cli\u003eInstall the impeller key on the driveshaft and slide the impeller into position while turning the shaft clockwise so the vanes seat correctly.\u003c\/li\u003e\n\u003cli\u003eReinstall the water-pump housing and tighten the fasteners to the manufacturer's specified torque.\u003c\/li\u003e\n\u003cli\u003eReattach the lower unit, ensuring the driveshaft and shift shaft align correctly.\u003c\/li\u003e\n\u003cli\u003eTest the engine with an appropriate flushing attachment or test tank and confirm a steady tell-tale water stream.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFollow the engine manufacturer's service manual for model-specific removal, installation, torque, and safety procedures. Professional installation is recommended when the correct procedure is not familiar.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this kit fits my engine?\u003c\/summary\u003e\u003cp\u003eThis kit is intended for selected Mercury and Force outboards. Compare your existing component with the listed Mercury, Sierra, and GLM references, then verify the complete engine model, year, horsepower, stroke, and serial-number requirements. For Force 25 HP applications, verify serial numbers E127700–E344999. Do not rely on horsepower alone.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon signs include a weak or absent tell-tale water stream, an overheating warning, or rising engine temperature. A damaged impeller may also cause abnormal noise from the lower unit. Stop operating the engine if it overheats and inspect the cooling system.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace a water-pump impeller?\u003c\/summary\u003e\u003cp\u003eInspect the impeller as part of regular maintenance and replace it according to the engine manufacturer's service schedule. Frequent operation in sandy, silty, or saltwater conditions may require more frequent inspection and replacement.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eMy 20 HP Mercury is not listed. Is it compatible?\u003c\/summary\u003e\u003cp\u003e20 HP compatibility is not confirmed by the listed application information. Do not purchase this kit for a 20 HP model unless the original component and application data confirm an exact match to 47-85089T7 or 47-85089Q4.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between this and an OEM part?\u003c\/summary\u003e\u003cp\u003eThis listing is for an aftermarket replacement kit, not an original-equipment Mercury component. It is intended to provide comparable service for the listed applications. Confirm dimensions, component shape, and part-number references before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow fast is shipping and what does it cost?\u003c\/summary\u003e\u003cp\u003eStandard shipping is free where offered. Typical transit time is 5–15 days for many regions. Available expedited shipping methods and costs are shown at checkout based on destination and service availability.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal marine use. Returns are accepted within the applicable return period for unused items in their original condition. Contact support with your order details for warranty or return instructions.\u003c\/p\u003e\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 original part number, dimensions, engine model, year, horsepower, stroke, and serial number before ordering.\u003c\/li\u003e\n\u003cli\u003eDo not operate an outboard without an adequate water supply for cooling.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement kit, not an OEM Mercury 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\u003ePro-Grade Standards\u003c\/strong\u003e — Marine replacement parts designed for demanding real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions where available, with typical transit times of 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Practical replacement solutions with attention to materials and quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718267244859,"sku":"19KM001-QM","price":31.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/19KM001-QM.png?v=1762958583"},{"product_id":"water-pump-impeller-fits-mercury-mariner-25-50hp-replaces-47-8m0024502-47-850893","title":"Water Pump Impeller – Replacement for Mercury\/Mariner and Force\/Chrysler Outboard Applications","description":"\u003csection\u003e\n\u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003ewater pump impeller\u003c\/strong\u003e is intended for specified Mercury\/Mariner and Force\/Chrysler outboard water-pump applications. Fitment depends on the engine model, stroke, model year, gear-case configuration, and serial-number range, so compare your engine details and the reference numbers below before ordering.\u003c\/p\u003e\n\u003cp\u003eThe impeller is listed as a replacement for the Mercury Marine reference \u003cstrong\u003e47-850893\u003c\/strong\u003e and related reference numbers including \u003cstrong\u003e47-8M0024502\u003c\/strong\u003e. The 2019 Sierra catalog identifies Sierra 18-3057 as an impeller associated with Mercury reference 47-850893; aftermarket and OEM reference numbers should be used for identification and fitment checking, not as a claim that the product is a genuine OEM component.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAftermarket replacement for the water-pump impeller.\u003c\/li\u003e\n\u003cli\u003eSix-blade configuration for water circulation through the cooling system.\u003c\/li\u003e\n\u003cli\u003eNeoprene rubber construction with an internal hub mount.\u003c\/li\u003e\n\u003cli\u003eConfirm the engine serial number and water-pump assembly before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThe following numbers are reference identifiers associated with this impeller application. Verify the number, dimensions, and engine serial range against your original part.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand or source\u003c\/th\u003e\n\u003cth\u003eReference number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-85089\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-8508920\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-8M0024502\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-8M0027792\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e8M0204712\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3057\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e89640\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-45303\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-45303-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine and Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe application list below is provided as a fitment guide. Always confirm the exact model and serial number because engines with the same horsepower rating may use different water-pump components.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel or application\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYear or serial condition\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e18HP\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984 and later; S\/N 5837437 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eVerify model and pump assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e20HP\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984 and later; S\/N 6443973 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eVerify model and pump assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e25, 25XD, 25 Sea Pro\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984 and later; S\/N 5705532 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eVerify model and pump assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e25 three-cylinder\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eS\/N E268781 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eVerify model and pump assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e30 Jet\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eS\/N G590000 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eJet applications require serial-number confirmation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e30 two-cylinder\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eS\/N G053314 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eVerify model and pump assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e40 two-cylinder\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eS\/N G053314 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eVerify model and pump assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e40 three-cylinder\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eS\/N G531301 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eVerify model and pump assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e40 standard\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eS\/N G231123–G760299\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eSerial range is required for confirmation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e40 with 2:1 ratio\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eS\/N G760300–T408999\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eSerial range is required for confirmation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e45 Bodensee\u003c\/td\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eS\/N G231123 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eVerify model and pump assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e50 three-cylinder\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984 and later; S\/N G590000 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eVerify model and pump assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e50 standard\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eS\/N G231123 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eVerify model and pump assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eBigFoot\u003c\/td\u003e\n\u003ctd\u003e8–15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eListed for models with the BigFoot gear case; verify before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForce\/Chrysler\u003c\/td\u003e\n\u003ctd\u003e25HP\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–1998; S\/N E127700–E344999\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eSerial range is required for confirmation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForce\/Chrysler\u003c\/td\u003e\n\u003ctd\u003e40\/50HP\u003c\/td\u003e\n\u003ctd\u003e40\/50\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995–1999; S\/N E093700–E369299\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eSerial range is required for confirmation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForce\/Chrysler\u003c\/td\u003e\n\u003ctd\u003e75HP\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999; S\/N E345000 and later\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eSerial range is required for confirmation.\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 impeller\u003c\/dd\u003e\n\u003cdt\u003eProduct construction\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber impeller with internal hub mount\u003c\/dd\u003e\n\u003cdt\u003eBlade configuration\u003c\/dt\u003e\n\u003cdd\u003e6 blades\u003c\/dd\u003e\n\u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n\u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eDiameter: 73.00 mm (2.906 in); height: 12.60 mm (0.496 in); internal hub: 16.00 mm (0.629 in)\u003c\/dd\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e41 g (0.09 lb)\u003c\/dd\u003e\n\u003cdt\u003eInstallation type\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement in a compatible water-pump assembly\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e1 × Water pump impeller\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003eThis listing is for the impeller only. The key, gaskets, wear plate, housing, seals, and other water-pump components are not included unless specifically supplied with the compatible pump assembly.\u003c\/p\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eConfirm the engine model, stroke, serial number, and original impeller dimensions before beginning work.\u003c\/li\u003e\n\u003cli\u003ePlace the outboard in a secure upright position and follow the engine manufacturer's procedure for removing the lower unit.\u003c\/li\u003e\n\u003cli\u003eRemove the water-pump housing and inspect the housing, wear plate, key, gaskets, and driveshaft for wear or damage.\u003c\/li\u003e\n\u003cli\u003eRemove the old impeller and clean all mating surfaces and debris from the pump housing.\u003c\/li\u003e\n\u003cli\u003eReuse the existing key only if it is in good condition and correctly matches the engine; replace damaged or missing components as required by the engine manufacturer.\u003c\/li\u003e\n\u003cli\u003eInstall the impeller in the correct rotational orientation. A light coating of clean marine lubricant may be used where appropriate; do not use petroleum products that can damage the rubber.\u003c\/li\u003e\n\u003cli\u003eReinstall the housing and related components using the manufacturer's torque specifications.\u003c\/li\u003e\n\u003cli\u003eReattach the lower unit, supply cooling water, and confirm a steady tell-tale stream before operating the engine under load.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting and FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm fitment?\u003c\/summary\u003e\u003cp\u003eCompare the original impeller's dimensions and reference number, then confirm the engine brand, model, horsepower, stroke, gear-case configuration, and serial number against the application table. A matching horsepower rating alone is not sufficient.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs of a worn impeller?\u003c\/summary\u003e\u003cp\u003eSymptoms may include a weak or missing tell-tale stream, overheating warnings, reduced cooling-water flow, damaged blades, cracking, brittleness, or visible wear. A tell-tale stream does not by itself rule out a worn impeller.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the impeller be inspected?\u003c\/summary\u003e\u003cp\u003eInspect the impeller according to the engine manufacturer's maintenance schedule and replace it when the blades are worn, cracked, permanently set, or damaged. More frequent inspection may be appropriate in sandy, silty, or debris-filled water.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the impeller include a key or gasket set?\u003c\/summary\u003e\u003cp\u003eNo. The box contains one water pump impeller only. A compatible key, gaskets, wear plate, housing, and other service parts must be sourced separately when required by the engine model.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a genuine OEM component?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement impeller. The OEM and aftermarket numbers shown on this page are reference numbers for identification and fitment.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect the battery and follow the engine manufacturer's service and safety procedures before working on the outboard.\u003c\/li\u003e\n\u003cli\u003eNever run the engine without an adequate supply of cooling water.\u003c\/li\u003e\n\u003cli\u003eDo not rely on horsepower alone; verify the complete model and serial-number application.\u003c\/li\u003e\n\u003cli\u003eStop installation if the replacement part differs in dimensions, hub design, blade count, or material from the required original part.\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\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine replacement parts\u003c\/strong\u003e — Replacement components for common outboard service applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment-focused information\u003c\/strong\u003e — Product references and application details are provided to support model and serial-number verification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAftermarket value\u003c\/strong\u003e — A practical replacement option for servicing a compatible water-pump assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718267310395,"sku":"17IM007R","price":20.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17IM007R.png?v=1762958585"},{"product_id":"water-pump-impeller-service-kit-fits-mercury-mariner-13-5-25-hp-outboards-replaces-47-8508910-47-850893-47-8m0027792","title":"Water Pump Impeller Service Kit for Mercury\/Mariner Outboards – 4-Stroke 9.9–25 HP and 2-Stroke 20–30 HP – Replaces 47-8508910, 47-85089-3 and 47-8M0204712","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller Service Kit\u003c\/strong\u003e is an aftermarket replacement for selected Mercury and Mariner outboard water-pump applications. Catalog-supported applications include Mercury 4-Stroke models from 9.9 HP through 25 HP and selected 2-Stroke 20, 25, and 30 HP models. Exact fitment depends on the engine model, water-pump design, gear ratio, and serial-number range.\u003c\/p\u003e\n\u003cp\u003eThe impeller is listed as a replacement for multiple manufacturer and aftermarket references, including Mercury \u003cstrong\u003e47-8508910\u003c\/strong\u003e, \u003cstrong\u003e47-85089-3\u003c\/strong\u003e, and \u003cstrong\u003e47-8M0204712\u003c\/strong\u003e, Sierra \u003cstrong\u003e18-3057\u003c\/strong\u003e, Mallory \u003cstrong\u003e9-45303\u003c\/strong\u003e, and CEF \u003cstrong\u003e500315\u003c\/strong\u003e. These references are provided for identification and interchange checking only; always compare the original part and verify the engine-specific conditions before ordering.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned as a direct replacement for compatible water-pump impeller applications.\u003c\/li\u003e\n\u003cli\u003eNeoprene rubber impeller with a metal-alloy hub for dependable cooling-water circulation.\u003c\/li\u003e\n\u003cli\u003eKit includes the impeller key and additional sealing components listed below.\u003c\/li\u003e\n\u003c\/ul\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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these references to compare the replacement with your original component. A part-number match does not replace engine-specific fitment verification.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-85089-3\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-8M0204712\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-8M0027792\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-8M0024502\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3057\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-45303\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCEF\u003c\/td\u003e\n\u003ctd\u003e500315\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe applications below summarize catalog-supported examples for the listed impeller reference. Serial-number, model-designation, gear-ratio, and water-pump configuration conditions must remain together when checking fitment.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel or Application\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eSerial or Application Condition\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e13.5 International\u003c\/td\u003e\n\u003ctd\u003e13.5 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial 0P134638 through 0P400999\u003c\/td\u003e\n\u003ctd\u003e47-8M0204712\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.9, 323 cc\u003c\/td\u003e\n\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial 0G760300 through 1B226999\u003c\/td\u003e\n\u003ctd\u003e47-8M0204712\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.9, 323 cc\u003c\/td\u003e\n\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial 0P075166 through 0P400999\u003c\/td\u003e\n\u003ctd\u003e47-8M0204712\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e15 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSelected serial ranges including 0G590000 through 1B727495\u003c\/td\u003e\n\u003ctd\u003e47-8M0204712\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e18 HP\u003c\/td\u003e\n\u003ctd\u003eConfiguration varies\u003c\/td\u003e\n\u003ctd\u003eSelected serial ranges; verify the exact pump design\u003c\/td\u003e\n\u003ctd\u003e47-8M0204712\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e20, 2-cylinder\u003c\/td\u003e\n\u003ctd\u003e20 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSelected serial ranges including 0B238464 through 0P325499\u003c\/td\u003e\n\u003ctd\u003e47-8M0204712\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25, 2-cylinder\u003c\/td\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSelected serial ranges including 0B238464 through 1B000001 and newer\u003c\/td\u003e\n\u003ctd\u003e47-8M0204712\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSelected serial ranges including 0G590000 through 0P388282\u003c\/td\u003e\n\u003ctd\u003e47-8M0204712\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e30, 2-cylinder\u003c\/td\u003e\n\u003ctd\u003e30 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSelected serial ranges including 0G055314 through 1B000001 and newer\u003c\/td\u003e\n\u003ctd\u003e47-8M0204712\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 table is not an exhaustive fitment list. Mariner applications may use equivalent Mercury powerhead and gearcase configurations, but the exact model and serial number must be checked before installation. The previously stated Force\/Chrysler and 40 HP applications are not included here because the available catalog evidence did not establish those relationships for this impeller reference.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater Pump Impeller Service Kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement for compatible applications\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber impeller with metal-alloy hub\u003c\/dd\u003e\n \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e6\u003c\/dd\u003e\n \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eImpeller height: 12.6 mm (0.50 in); overall diameter: 73.8 mm (2.91 in); hub shaft diameter: 16.0 mm (0.63 in)\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e40 g (1.41 oz)\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eWarranty coverage varies by seller and manufacturer; review the applicable order terms before purchase.\u003c\/dd\u003e\n \u003cdt\u003eInstallation Requirement\u003c\/dt\u003e\n\u003cdd\u003eImpeller key required; a key is included in this service kit.\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 Water pump impeller\u003c\/li\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Impeller key, reference 28-85119\u003c\/li\u003e\n \u003cli\u003e2 x Seal\u003c\/li\u003e\n \u003cli\u003e1 x O-ring\u003c\/li\u003e\n \u003cli\u003e1 x Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the negative battery cable before starting work.\u003c\/li\u003e\n \u003cli\u003eRemove the gearcase or lower unit according to the engine manufacturer's service procedure.\u003c\/li\u003e\n \u003cli\u003eUnbolt and remove the water-pump housing to access the impeller.\u003c\/li\u003e\n \u003cli\u003eNote the direction of the old impeller blades before removal.\u003c\/li\u003e\n \u003cli\u003eRemove the old impeller, key, gaskets, seals, and O-ring. Clean the mating surfaces thoroughly.\u003c\/li\u003e\n \u003cli\u003eInstall the supplied seals, O-ring, and gasket in the correct positions for your water-pump housing.\u003c\/li\u003e\n \u003cli\u003eInstall the impeller key into the driveshaft.\u003c\/li\u003e\n \u003cli\u003eSlide the new impeller onto the driveshaft while rotating it in the correct direction to seat the blades.\u003c\/li\u003e\n \u003cli\u003eReinstall the water-pump housing and tighten fasteners to the engine manufacturer's specifications.\u003c\/li\u003e\n \u003cli\u003eReattach the lower unit, reconnect the battery, and test the cooling-water flow in a suitable test tank or in the water.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm fitment for my engine?\u003c\/summary\u003e\u003cp\u003eCheck the engine brand, exact model designation, horsepower, stroke, water-pump configuration, and serial number against the compatibility information. Compare the original impeller's diameter, height, hub, blade count, and keyway before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include a weak or missing telltale stream, an overheating warning, irregular cooling-water flow, or visible cracks, stiffness, deformation, or missing blades on the old impeller.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\u003cp\u003eInspect the impeller regularly and replace it when the blades become worn, stiff, cracked, permanently bent, or damaged. Replacement intervals depend on operating hours, storage conditions, and whether the engine is used in saltwater, silt, sand, or other abrasive environments.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs everything needed for installation included?\u003c\/summary\u003e\u003cp\u003eThe kit includes the impeller, key, seals, O-ring, and gasket listed in the box contents. Standard mechanic's tools and any engine-specific service materials are not included.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM component?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement intended for compatible applications. Mercury, Mariner, Sierra, Mallory, CEF, and other names and part numbers are used only to identify referenced applications and are not claims that this product is manufactured by those brands.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat should I do if my engine is not listed?\u003c\/summary\u003e\u003cp\u003eDo not rely on horsepower alone. Confirm the complete model and serial-number condition, compare the original component dimensions, and contact support before ordering if any detail differs.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eFollow the engine manufacturer's service instructions and use appropriate personal protective equipment.\u003c\/li\u003e\n \u003cli\u003eVerify the original impeller, keyway, dimensions, and engine serial number before purchase.\u003c\/li\u003e\n \u003cli\u003eDo not operate an outboard with inadequate cooling-water flow or an overheating warning.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended if you are not familiar with lower-unit and water-pump service.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine replacement parts selected for dependable service in real-world operating conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Standard delivery options and estimated transit times are shown at checkout based on the destination.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Practical replacement parts at competitive pricing without unnecessary markup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718267343163,"sku":"24KM109-QM","price":20.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24KM109-QM.png?v=1762958587"},{"product_id":"99157t2-water-pump-impeller-repair-kit-with-47-85089-impeller-for-mercury-mariner-8-9-9-13-5-15-18-20-jet-25-seapro-marathon-outboard-motor","title":"99157T2 Water Pump Impeller Repair Kit with 47-85089 Impeller for Mercury Mariner 8–25 HP Outboards","description":"\u003csection\u003e\n\u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003ewater pump impeller repair kit\u003c\/strong\u003e is designed for servicing the cooling system on selected Mercury, Mariner, and Force outboard motors. The kit includes a replacement pump housing assembly, impeller, plates, gaskets, seals, key, and related service components. Confirm your engine model, year, stroke, and serial number before ordering.\u003c\/p\u003e\n\u003cp\u003eThe kit is listed as an aftermarket replacement for the following Mercury reference numbers: \u003cstrong\u003e99157T2\u003c\/strong\u003e, \u003cstrong\u003e46-99157T2\u003c\/strong\u003e, \u003cstrong\u003e46-99157A2\u003c\/strong\u003e, \u003cstrong\u003e46-85098A2\u003c\/strong\u003e, \u003cstrong\u003e85098A2\u003c\/strong\u003e, and \u003cstrong\u003e99157A2\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eReplacement water pump service kit for selected 8–25 HP outboards.\u003c\/li\u003e\n \u003cli\u003eIncludes a stainless-steel pump housing assembly and neoprene rubber impeller.\u003c\/li\u003e\n \u003cli\u003eSupplies gaskets, seals, plates, key, and other components for a water pump overhaul.\u003c\/li\u003e\n \u003cli\u003eAftermarket replacement; not a Mercury, Mariner, or Force original-equipment part.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these reference numbers when comparing the original water pump parts. Reference numbers alone do not confirm fitment; verify the complete engine application and serial range.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e46-99157T2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e46-99157A2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e46-85098A2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e85098A2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e99157A2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe applications below are the listed model and serial-number references for this repair kit. Match the brand, horsepower, stroke, model variant, year, and serial number to your engine before purchase. If any condition differs, consult an authorized marine-parts supplier.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eSerial or Model Notes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e8 HP\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998 and later\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eSerial 0P086824–0P400999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998 and later\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eSerial 0P075166–0P400999; 0G760300–1B226999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e13.5 HP\u003c\/td\u003e\n\u003ctd\u003e13.5\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998 and later\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eSerial 0P134638 and later\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e15 HP XD \/ Marathon XD\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eSerial 0P017000–0P325499\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e15 HP\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998 and later\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eSerial 0P075166 and later; 0G760300–1B727495\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e15 HP XD Bigfoot\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eBEL serial 9927000 and later\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e18 HP\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 5837437 and later; AUS 8071973 and later; BEL 9308306 and later\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e20 HP\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–1987\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 6443973–0T800749; BEL 9415101 and later; CAN 7209533 and later\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e20 HP Jet\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997 and later\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eSerial 0G760300–0T999999; 0P017000–0P325499; 1B000001 and later\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1987\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 5705532 and later; AUS 8073158 and later\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25 HP, 3-cylinder\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997 and later\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 0E268781 and later\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25 HP Sea Pro \/ Marathon\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eIncludes listed Sea Pro, Marathon, and Super 15 variants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForce\u003c\/td\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eSerial 0E127700–0E344999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater pump impeller repair kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement service installation\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eStainless steel, listed as SS316\u003c\/dd\u003e\n \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber\u003c\/dd\u003e\n \u003cdt\u003eApproximate Weight\u003c\/dt\u003e\n\u003cdd\u003e290–295 g (10.2–10.4 oz)\u003c\/dd\u003e\n \u003cdt\u003eIncluded Components\u003c\/dt\u003e\n\u003cdd\u003ePump housing assembly, impeller, plates, gaskets, seals, key, washers, water tube guide sleeve, insulators, and related service components as listed below\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 × Pump housing assembly, 46-99157A02\u003c\/li\u003e\n \u003cli\u003e1 × Gasket, 27-993261\u003c\/li\u003e\n \u003cli\u003e1 × Plate, 85083\u003c\/li\u003e\n \u003cli\u003e1 × Impeller, 47-85089-3, 47-85089-10, or 8M0024502 reference\u003c\/li\u003e\n \u003cli\u003e1 × Key, 8M0032838\u003c\/li\u003e\n \u003cli\u003e3 × O-rings\u003c\/li\u003e\n \u003cli\u003e4 × Insulators, 23-85095\u003c\/li\u003e\n \u003cli\u003e1 × Water tube guide sleeve\u003c\/li\u003e\n \u003cli\u003e2 × Gear-lube fill and vent screw O-rings\u003c\/li\u003e\n \u003cli\u003e2 × Face plates\u003c\/li\u003e\n \u003cli\u003e2 × Transparent washers, 12-86645-1 reference\u003c\/li\u003e\n \u003cli\u003e1 × Seal, 85090 or 85090001 reference\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eComponent markings and supplied quantities should be compared with the parts removed from the engine before installation. Do not combine components from separate water pump kits.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eReview the engine service manual and disconnect the battery and spark plug leads where applicable.\u003c\/li\u003e\n \u003cli\u003ePlace a drain pan below the lower unit. Remove the gearcase drain and vent screws and drain the lubricant if required for the service procedure.\u003c\/li\u003e\n \u003cli\u003eRemove the fasteners securing the lower unit to the midsection and carefully lower the gearcase.\u003c\/li\u003e\n \u003cli\u003eRemove the water pump housing assembly and note the orientation and order of all components.\u003c\/li\u003e\n \u003cli\u003eRemove the old impeller, key, gaskets, plates, and seals. Clean the mating surfaces without damaging the sealing areas.\u003c\/li\u003e\n \u003cli\u003eInstall the replacement gasket, wear plate, seals, and other applicable components from the kit.\u003c\/li\u003e\n \u003cli\u003eInstall the key and impeller. Apply only a suitable lubricant recommended by the engine manufacturer; do not install the impeller dry.\u003c\/li\u003e\n \u003cli\u003ePosition the impeller vanes in the correct direction for the engine's normal rotation and install the housing.\u003c\/li\u003e\n \u003cli\u003eSecure the housing using the manufacturer's tightening sequence and torque specifications.\u003c\/li\u003e\n \u003cli\u003eReinstall the lower unit, ensuring correct driveshaft, shift-shaft, and water-tube alignment.\u003c\/li\u003e\n \u003cli\u003eRefill the gearcase with the specified lubricant and install the drain and vent screws with the appropriate washers.\u003c\/li\u003e\n \u003cli\u003eRun the engine only in an appropriate test tank or with the manufacturer's approved flushing equipment. Confirm cooling-water flow and check for leaks or overheating.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I confirm fitment for my engine?\u003c\/summary\u003e\n \u003cp\u003eCompare the engine brand, horsepower, model variant, stroke, year, and complete serial number with the compatibility table. The serial-number condition is especially important because engines with similar horsepower can use different water pump parts.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are the signs of a worn water pump impeller?\u003c\/summary\u003e\n \u003cp\u003eTypical signs include overheating at idle or low speed, a weak or missing tell-tale stream, reduced cooling-water flow, or visibly cracked, stiff, damaged, or missing impeller vanes. Stop operation if the engine overheats.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow often should an outboard impeller be replaced?\u003c\/summary\u003e\n \u003cp\u003eReplacement intervals depend on the engine manufacturer's maintenance schedule and operating conditions. Frequent operation in saltwater, sandy water, or silty water can accelerate wear. Inspect and replace the impeller when the service schedule or its condition requires it.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhy does this kit use a stainless-steel housing?\u003c\/summary\u003e\n \u003cp\u003eThe listed stainless-steel housing is intended to provide a durable pump-body replacement with corrosion resistance. Actual service life depends on water conditions, installation, maintenance, and correct engine fitment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n \u003cp\u003eNo. This listing is for an aftermarket replacement kit. The reference numbers are provided for application and comparison purposes and do not indicate that the kit is manufactured by Mercury, Mariner, or Force.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat should I do if the kit does not match my original parts?\u003c\/summary\u003e\n \u003cp\u003eDo not force installation or mix unmatched components. Stop and compare the engine serial number, removed parts, reference numbers, and installation diagram with the supplier or an authorized marine technician.\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 application and serial range before ordering.\u003c\/li\u003e\n \u003cli\u003eCompare the replacement components with the original parts before installation.\u003c\/li\u003e\n \u003cli\u003eUse the engine manufacturer's service manual for torque values, lubricant specifications, and lower-unit procedures.\u003c\/li\u003e\n \u003cli\u003eDo not operate an outboard without an adequate water supply for cooling.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended when lower-unit removal or gearcase service is unfamiliar.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement kit, not an OEM component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — Parts are supplied for routine service and repair applications across a range of marine engines.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Model, year, stroke, and serial information is provided to support part comparison.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCustomer Support\u003c\/strong\u003e — Compare your original part and engine identification details before ordering, and contact support if application information is unclear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718267408699,"sku":"JC-0LPT-7OZQ","price":42.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/JC-0LPT-7OZQ.png?v=1762958591"},{"product_id":"water-pump-repair-kit-fits-mercury-mariner-2-stroke-15-25-hp-4-stroke-9-9-15-hp-replaces-99157t2-85098a2-99157a2","title":"Water Pump Repair Kit – Fits Mercury \u0026 Mariner 2-Stroke 15–25 HP \u0026 4-Stroke 9.9–15 HP (Replaces 99157T2, 85098A2, 99157A2)","description":"\u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis aftermarket \u003cstrong\u003eupper water pump repair kit\u003c\/strong\u003e is designed to service the cooling-system water pump on selected Mercury and Mariner outboards, including 2-stroke 15–25 HP models and 4-stroke Bigfoot 9.9–15 HP models. The listed applications cover model years and serial-number ranges shown in the compatibility table below.\u003c\/p\u003e\n \u003cp\u003eThe kit is listed as a replacement for Mercury references \u003cstrong\u003e46-99157T2\u003c\/strong\u003e, \u003cstrong\u003e46-99157A2\u003c\/strong\u003e, and \u003cstrong\u003e46-85098A2\u003c\/strong\u003e, along with the related reference numbers \u003cstrong\u003e99157T2\u003c\/strong\u003e, \u003cstrong\u003e99157A2\u003c\/strong\u003e, and \u003cstrong\u003e85098A2\u003c\/strong\u003e. These numbers are provided for cross-reference; always verify the complete engine model, year, and serial number before ordering.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eDesigned as a direct-fit replacement for the listed applications.\u003c\/li\u003e\n \u003cli\u003eIncludes a stainless-steel pump housing and neoprene impeller.\u003c\/li\u003e\n \u003cli\u003eIncludes gaskets, seals, washers, keys, O-rings, and related pump-service components listed below.\u003c\/li\u003e\n \u003cli\u003eSuitable for water-pump service when the original component and application match the listed references.\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 the following references to compare the kit with the part numbers associated with the listed applications.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eRelated Reference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e46-85098A2\u003c\/td\u003e\n\u003ctd\u003e85098A2 \/ 99157A2\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e46-99157A2\u003c\/td\u003e\n\u003ctd\u003e99157A2 \/ 99157T2\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e46-99157T2\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMarinepro\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGHmarine\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eUanofCn\u003c\/td\u003e\n\u003ctd\u003e99157T2\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\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm the exact engine brand, model designation, horsepower, stroke type, year, and serial number before installation. Model families can use different components across production years and serial ranges.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e15 (E, EH, EL, ELH) 4\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eBigfoot models\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e15 (MH, MLH, MLH\/ALT, MLH\/BF) 4\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eBigfoot models\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e9.9 Bigfoot\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 0G760300–0T979999; BEL serial 0P075166–0P325499\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e15 XD Bigfoot\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eBEL serial 9927000 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e18, 18XD\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985\u003c\/td\u003e\n\u003ctd\u003e85098A2 \/ 99157A2 \/ 99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 5837437 and up; AUS 8071973 and up; BEL 9308306 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e20, 20XD\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–1987\u003c\/td\u003e\n\u003ctd\u003e99157A2 \/ 99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 6443973–0T800749; BEL 9415101 and up; CAN 7209533 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25, 25XD\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1987\u003c\/td\u003e\n\u003ctd\u003e85098A2 \/ 99157A2 \/ 99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 5705532 and up; AUS 8073158 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25, 3-cylinder\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997 and up\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 0E268781 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25 Sea Pro, Marathon, Super 15\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 0B238464 and up; BEL 9507381 and up; CAN 0A730007 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e15 (E, EH, EL, EL\/BF, ELH, MH, MLH) 4\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eBigfoot models\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e15 MLA\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eModel code 70152374D\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e18, 18XD\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985\u003c\/td\u003e\n\u003ctd\u003e85098A2 \/ 99157A2 \/ 99157T2\u003c\/td\u003e\n\u003ctd\u003eVerify the engine serial number\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e20 (E, EH, EL, M, MH, ML, MLH)\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1984–1998\u003c\/td\u003e\n\u003ctd\u003e85098A2 \/ 99157A2 \/ 99157T2\u003c\/td\u003e\n\u003ctd\u003eMultiple model codes\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e25 (E, EH, EL, ELH, MH, ML, MLH)\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1998\u003c\/td\u003e\n\u003ctd\u003e85098A2 \/ 99157A2 \/ 99157T2\u003c\/td\u003e\n\u003ctd\u003eMultiple model codes\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e25 JET 20\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eVerify model and serial number\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e25 MH\/ALT, MLH\/ALT\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eVerify model and serial number\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eForce\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eVarious serial ranges; confirm before purchase\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSears\u003c\/td\u003e\n\u003ctd\u003eGamefisher\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eModels 225.582500, 225.582501, 225.582591, 225.592500, and 225.592590\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 Specifications\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eUpper water pump repair kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect-fit replacement for listed applications\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eStainless steel 316\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eSilver\/metallic\u003c\/dd\u003e\n \u003cdt\u003eApproximate Dimensions\u003c\/dt\u003e\n\u003cdd\u003e6.2 × 4.3 × 1.9 inches (157.5 × 109.2 × 48.3 mm)\u003c\/dd\u003e\n \u003cdt\u003eApproximate Weight\u003c\/dt\u003e\n\u003cdd\u003e0.5 lb (0.23 kg)\u003c\/dd\u003e\n \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene\u003c\/dd\u003e\n \u003cdt\u003eOther Components\u003c\/dt\u003e\n\u003cdd\u003eRubber O-rings, gaskets, washers, key, seal, face plate, and water-tube guide sleeve\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 × Pump housing assembly, reference 99157A02\/99157A1\u003c\/li\u003e\n \u003cli\u003e1 × Face plate, reference 85083\u003c\/li\u003e\n \u003cli\u003e1 × Gasket, reference 993261\u003c\/li\u003e\n \u003cli\u003e1 × Key, reference 8M0032838\u003c\/li\u003e\n \u003cli\u003e1 × Seal, reference 85090001\/85090\u003c\/li\u003e\n \u003cli\u003e2 × Transparent washers, reference 12-86645-1\u003c\/li\u003e\n \u003cli\u003e4 × Insulators, reference 23-85095\u003c\/li\u003e\n \u003cli\u003e3 × O-rings\u003c\/li\u003e\n \u003cli\u003e1 × Impeller, reference 47-85089\/8M0024502\/8508910\u003c\/li\u003e\n \u003cli\u003e1 × Water-tube guide sleeve\u003c\/li\u003e\n \u003cli\u003e2 × Gear-lube fill and vent screw O-rings\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003eComponent references are supplied for identification. Some parts may be unused when the kit is installed on a particular engine variation.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eDisconnect the negative battery cable, remove the engine cowling, and place the outboard in neutral.\u003c\/li\u003e\n \u003cli\u003eRemove the bolts securing the lower unit to the upper leg and carefully lower the gearcase.\u003c\/li\u003e\n \u003cli\u003eRemove the old water-pump housing and note the original impeller-vane orientation.\u003c\/li\u003e\n \u003cli\u003eClean the driveshaft and all mating surfaces, removing old gasket material and residue.\u003c\/li\u003e\n \u003cli\u003eInstall the gasket, wear plate, and key. Fit the new impeller to the driveshaft while turning the shaft clockwise so the vanes seat correctly.\u003c\/li\u003e\n \u003cli\u003eApply a light coat of suitable marine grease to the inside of the pump housing and install the housing over the impeller.\u003c\/li\u003e\n \u003cli\u003eReinstall the lower unit, making sure the water tube, driveshaft, and shift shaft align correctly before tightening the fasteners.\u003c\/li\u003e\n \u003cli\u003eReconnect the battery. Start the engine only in an appropriate water supply and confirm a strong, steady tell-tale stream.\u003c\/li\u003e\n \u003c\/ol\u003e\n \u003cp\u003eFollow the service procedures and torque specifications for the exact engine model. If you are not experienced with lower-unit removal or water-pump service, use a qualified marine technician.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\u003csummary\u003eHow do I confirm fitment?\u003c\/summary\u003e\u003cp\u003eCompare the complete engine model, year, horsepower, stroke type, and serial number with the compatibility table. Also compare the original pump components and reference numbers before ordering.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon signs include overheating at idle or low speed, a weak or intermittent tell-tale stream, no water flow, or a brittle, cracked, or deformed impeller.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eHow often should the impeller be inspected or replaced?\u003c\/summary\u003e\u003cp\u003eInspect the impeller according to the engine manufacturer's maintenance schedule. More frequent inspection may be appropriate for engines used in saltwater, sandy, or silty conditions.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement kit intended for the listed applications and reference numbers. It is not manufactured by Mercury, Mariner, Force, or Sears.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eDo the included gaskets require sealant?\u003c\/summary\u003e\u003cp\u003eInstall gaskets according to the service instructions for the exact engine. Do not apply sealant to the impeller or any surface where it could restrict cooling-water flow. Use only a compatible non-hardening sealant when the engine service procedure specifically calls for one.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eWhy are there multiple O-rings and extra parts?\u003c\/summary\u003e\u003cp\u003eThe kit covers several engine variations. Some included components may not be required for every application. Match each part with the service diagram for your exact model before installation.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eWhat should I do after installation?\u003c\/summary\u003e\u003cp\u003eRun the engine only in a suitable water supply and check for a steady tell-tale stream, leaks, abnormal noise, or overheating. Stop the engine immediately if cooling flow is weak or absent.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eConfirm the engine model, year, stroke type, serial number, and original component before purchase.\u003c\/li\u003e\n \u003cli\u003eDo not operate an outboard without an adequate water supply.\u003c\/li\u003e\n \u003cli\u003eAllow the engine to cool before servicing the cooling system.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended when lower-unit service experience or the correct service tools are not available.\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 — Marine replacement parts selected for dependable service in real-world operating conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Standard delivery options are available to many regions; delivery times vary by destination.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Competitive replacement-part pricing with practical application information.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718267441467,"sku":"FYS12111508","price":31.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/FYS12111508.png?v=1762958593"},{"product_id":"water-pump-repair-kit-fits-mercury-marine-2-stroke-15-25-hp-4-stroke-9-9-15-hp-replaces-99157t2-46-99157t2","title":"Water Pump Repair Kit for Mercury and Mariner Outboards – 2-Stroke 15–25 HP and 4-Stroke 9.9–15 HP","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Repair Kit\u003c\/strong\u003e is an aftermarket replacement for selected Mercury and Mariner outboards, including 2-stroke 15–25 HP models and 4-stroke 9.9–15 HP BigFoot models. It also covers selected Force 25 HP and Sears Gamefisher 25 HP 2-stroke applications. Always verify the complete engine model, year, stroke, and serial-number range before ordering.\u003c\/p\u003e\n\u003cp\u003eThis kit is listed as a replacement or cross-reference for Mercury part numbers \u003cstrong\u003e99157T2\u003c\/strong\u003e, \u003cstrong\u003e46-99157T2\u003c\/strong\u003e, \u003cstrong\u003e85098A2\u003c\/strong\u003e, \u003cstrong\u003e99157A2\u003c\/strong\u003e, and \u003cstrong\u003e46-85098A2\u003c\/strong\u003e, and Quicksilver part number \u003cstrong\u003e85089Q4\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete upper water-pump service kit for applicable outboard lower units.\u003c\/li\u003e\n\u003cli\u003eIncludes the impeller, pump housing, face plate, gaskets, seal, key, washers, insulators\/grommets, and O-rings listed below.\u003c\/li\u003e\n\u003cli\u003eAftermarket replacement components intended for freshwater and saltwater service when installed and maintained correctly.\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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these manufacturer and aftermarket references to compare the kit with the parts removed from your engine. These references do not replace model, year, stroke, and serial-number verification.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e99157T2 \/ 46-99157T2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e85098A2 \/ 99157A2 \/ 46-85098A2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuicksilver\u003c\/td\u003e\n\u003ctd\u003e85089Q4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEngine and Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe applications below are the listed fitment scope for this replacement kit. Confirm the engine model, horsepower, stroke, year, and serial number before purchase. A number appearing in a parts catalog alone does not confirm fitment outside the conditions shown here.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eSerial or Model Notes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eBigFoot\u003c\/td\u003e\n\u003ctd\u003e9.9 (323cc)\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998–2005\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 0G760300–0T979999; BEL serial 0P075166–0P325499\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eBigFoot\u003c\/td\u003e\n\u003ctd\u003e15 (323cc)\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 0G590000 and up; BEL serial 9973100 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003eXD, BigFoot\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eBEL serial 9927000 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e18, 18XD\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 5837437 and up; AUS serial 8071973 and up; BEL serial 9308306 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e20, 20XD\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–1987\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 6443973–0T800749; BEL serial 9415101 and up; CAN serial 7209533 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25, 25XD\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1987\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 5705532 and up; AUS serial 8073158 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25 3-Cylinder\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997 and up\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 0E268781 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e25 Sea Pro, Marathon, Super 15\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eUSA serial 0B238464 and up; BEL serial 9507381 and up; CAN serial 0A730007 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eBigFoot\u003c\/td\u003e\n\u003ctd\u003e9.9 (323cc)\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998–2005\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eVerify the corresponding Mercury-derived serial range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003eBigFoot\u003c\/td\u003e\n\u003ctd\u003e15 (323cc)\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eVerify the corresponding Mercury-derived serial range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e15 XD, BigFoot\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eVerify the corresponding Mercury-derived serial range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e18, 18XD\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eVerify the corresponding Mercury-derived serial range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e20, 20XD\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–1987\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eVerify the corresponding Mercury-derived serial range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e25, 25XD\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1987\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eVerify the corresponding Mercury-derived serial range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e25 3-Cylinder\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997 and up\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eVerify the corresponding Mercury-derived serial range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMariner\u003c\/td\u003e\n\u003ctd\u003e25 Sea Pro, Marathon, Super 15\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eVerify the corresponding Mercury-derived serial range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForce\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eIncludes model codes such as H025201RD [MH] and H025211RD [MLH]\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSears\u003c\/td\u003e\n\u003ctd\u003eGamefisher 25\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994–1998\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eIncludes models 225.582500 and 225.592500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eUpper water pump repair kit\u003c\/dd\u003e\n\u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eReplacement for the applicable original water-pump assembly\u003c\/dd\u003e\n\u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline outboard applications\u003c\/dd\u003e\n\u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eStainless steel and plastic components\u003c\/dd\u003e\n\u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber\u003c\/dd\u003e\n\u003cdt\u003ePackage Dimensions\u003c\/dt\u003e\n\u003cdd\u003e151 × 108 × 52 mm (5.94 × 4.06 × 2.05 inches)\u003c\/dd\u003e\n\u003cdt\u003ePackage Weight\u003c\/dt\u003e\n\u003cdd\u003e0.289 kg (10.2 ounces)\u003c\/dd\u003e\n\u003cdt\u003eService Position\u003c\/dt\u003e\n\u003cdd\u003eUpper water-pump components in the lower unit\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Water pump impeller — 47-85089-3, 47-85089-10, or 8508910 reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Pump housing assembly — 99157A02 or 99157A1 reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Face plate — 85083 reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Gasket — 993261 reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Key — 8M0032838 reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Seal — 85090 or 85090001 reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Washer — 12-86645-1 reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e4 x\u003c\/span\u003e Insulator\/grommet — 23-85095 reference\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e3 x\u003c\/span\u003e O-ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the negative battery cable and remove the engine cowling.\u003c\/li\u003e\n\u003cli\u003ePlace a drain pan under the lower unit and remove the gearcase oil drain\/fill screw if the gearcase lubricant must be drained during service.\u003c\/li\u003e\n\u003cli\u003eRemove the fasteners securing the lower unit to the driveshaft housing.\u003c\/li\u003e\n\u003cli\u003eCarefully lower and separate the gearcase, taking care around the shift shaft and water tube.\u003c\/li\u003e\n\u003cli\u003eRemove the old water-pump housing, impeller, face plate, gaskets, seal, and related components.\u003c\/li\u003e\n\u003cli\u003eClean the driveshaft and all mating surfaces. Remove gasket residue, debris, and corrosion without damaging the sealing surfaces.\u003c\/li\u003e\n\u003cli\u003eInstall the new key and impeller on the driveshaft, then install the face plate, gaskets, seal, and pump housing in the correct order for the engine.\u003c\/li\u003e\n\u003cli\u003eLightly lubricate the appropriate O-rings and the inside of the pump cup with a suitable marine lubricant. Do not install a neoprene impeller dry.\u003c\/li\u003e\n\u003cli\u003eTighten the pump-housing fasteners to the engine manufacturer's specified torque.\u003c\/li\u003e\n\u003cli\u003eReinstall the lower unit, ensuring that the driveshaft, shift shaft, and water tube are correctly aligned.\u003c\/li\u003e\n\u003cli\u003eRefill the gearcase with the correct marine gear lubricant if it was drained.\u003c\/li\u003e\n\u003cli\u003eRun the engine only in water or with an appropriate flushing attachment, and verify a steady tell-tale stream before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting and FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if my water pump is failing?\u003c\/summary\u003e\u003cp\u003eCommon signs include a weak or absent tell-tale stream, an overheating warning, reduced cooling-water flow, or a damaged, brittle, cracked, or deformed impeller found during inspection.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace the water-pump impeller?\u003c\/summary\u003e\u003cp\u003eReplacement intervals depend on use, storage, water conditions, and the engine manufacturer's maintenance schedule. Many operators replace an impeller every one to two years or at the recommended service-hour interval, with more frequent inspection in saltwater or debris-heavy conditions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this kit fit an engine whose serial number is not listed?\u003c\/summary\u003e\u003cp\u003eDo not assume compatibility when the serial number is outside the ranges shown. Compare the original water-pump part numbers and consult the applicable engine parts catalog or a qualified marine technician before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM kit?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement kit. Mercury, Mariner, Force, Sears, Quicksilver, and other referenced names and part numbers are used only to identify applicable engines or replacement references.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need special tools for installation?\u003c\/summary\u003e\u003cp\u003eBasic hand tools are typically required. A torque wrench is recommended so the pump-housing and lower-unit fasteners can be tightened to the manufacturer's specifications.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs lubricant required during installation?\u003c\/summary\u003e\u003cp\u003eUse a suitable marine lubricant on O-rings and appropriate assembly surfaces. Do not start the engine with a dry impeller, and follow the engine manufacturer's instructions for initial priming and lubrication.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow fast do you ship?\u003c\/summary\u003e\u003cp\u003eTypical transit is 5–15 days. Standard shipping is free, and expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eParts are covered by a 1-year warranty against manufacturing defects under normal use. Returns are accepted within the standard return window for unused items in their original condition. Contact support with your order details for warranty or return instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the engine brand, model, horsepower, stroke, year, serial number, and original part number before purchase.\u003c\/li\u003e\n\u003cli\u003eCompare the supplied components with the original assembly before installation. Do not operate the engine if any component, seal, or fastener is missing or incorrectly installed.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement part, not an OEM component. Referenced brand names and part numbers identify compatibility only.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended. Incorrect water-pump installation can cause insufficient cooling and severe engine damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine replacement parts selected for reliable fit and service performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Standard delivery is available to most regions, with typical transit of 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — We work with manufacturing partners to provide replacement parts at competitive prices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718267474235,"sku":"18KM006-QM","price":42.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/18KM006-QM.png?v=1762958595"},{"product_id":"inline-fuel-filter-fits-mercury-tohatsu-nissan-4-30hp-outboards-replaces-35-16248-369-02230-0","title":"Inline Fuel Filter for Mercury, Mariner, Tohatsu and Nissan Outboards — Replaces Mercury 35-16248 and Tohatsu\/Nissan 369-02230-0","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;\n 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 \u003cstrong\u003eInline Fuel Filter\u003c\/strong\u003e is a single replacement filter for selected Mercury, Mariner, Tohatsu, and Nissan outboard fuel systems. It helps screen contaminants from the fuel supply before they reach the engine. The translucent housing makes it possible to check fuel flow and visible debris during routine maintenance.\u003c\/p\u003e\n \u003cp\u003eFor Mercury and Mariner applications, it replaces part number \u003cstrong\u003e35-16248\u003c\/strong\u003e. The corresponding Tohatsu\/Nissan fuel-filter reference is \u003cstrong\u003e369-02230-0\u003c\/strong\u003e, also written as \u003cstrong\u003e369022300M\u003c\/strong\u003e in some parts systems. Always compare the part number, hose connection, and engine application before installation.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eSingle inline fuel filter for gasoline outboard fuel systems.\u003c\/li\u003e\n \u003cli\u003eInstalls in the fuel hose under the engine cowl or at the listed fuel-system location.\u003c\/li\u003e\n \u003cli\u003eTranslucent housing allows a quick visual check of fuel and contamination.\u003c\/li\u003e\n \u003cli\u003eSuitable for the specific applications and model families listed below; model, year, stroke, and serial conditions must be confirmed.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eThese are reference numbers associated with the listed replacement applications. They are not the internal product identifier.\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\u003eReference Part Number\u003c\/th\u003e\n\u003cth\u003eReference Type\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003ctd\u003eReplacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\u003c\/td\u003e\n\u003ctd\u003eFuel filter assembly reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu \/ Nissan\u003c\/td\u003e\n\u003ctd\u003e369022300M\u003c\/td\u003e\n\u003ctd\u003eAlternate formatting used in parts listings\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\u003eCompatibility is application-specific. Confirm the exact model designation, year, stroke type, serial range where applicable, and the reference number on your original filter before ordering.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel or Application\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYear \/ Condition\u003c\/th\u003e\n\u003cth\u003eReference No.\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003eSelected 2-cylinder outboards\u003c\/td\u003e\n\u003ctd\u003e4–5 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999 and newer\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003eSelected 4-stroke outboards\u003c\/td\u003e\n\u003ctd\u003e4–6 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999 and newer\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003eSelected 4-stroke outboards\u003c\/td\u003e\n\u003ctd\u003e8–9.9 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2005 and newer\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003eSelected 4-stroke outboards\u003c\/td\u003e\n\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995–1998\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n\u003ctd\u003eSelected 4-stroke outboards\u003c\/td\u003e\n\u003ctd\u003e15 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998 and newer\u003c\/td\u003e\n\u003ctd\u003e35-16248\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM4C \/ M5B\u003c\/td\u003e\n\u003ctd\u003e4–5 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2013–2018 catalog applications\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eM6B \/ M8B \/ M9.8B\u003c\/td\u003e\n\u003ctd\u003e6–9.8 HP\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e2013–2018 catalog applications\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS4 \/ MFS5 \/ MFS6C\u003c\/td\u003e\n\u003ctd\u003e4–6 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2013–2018 catalog applications\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS8 \/ MFS9.8A3 and related MFS8–MFS9.8 models\u003c\/td\u003e\n\u003ctd\u003e8–9.8 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2013–2018 catalog applications\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTohatsu\u003c\/td\u003e\n\u003ctd\u003eMFS9.9 \/ MFS15 \/ MFS20C or MFS20D\u003c\/td\u003e\n\u003ctd\u003e9.9–20 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2013–2018 catalog applications\u003c\/td\u003e\n\u003ctd\u003e369-02230-0\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 available catalog evidence confirms the Tohatsu model families and applications shown above. It does not establish blanket compatibility with every 4–30 HP Mercury, Tohatsu, or Nissan outboard. Do not rely on horsepower alone.\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\u003eInline fuel filter\u003c\/dd\u003e\n \u003cdt\u003eProduct Format\u003c\/dt\u003e\n\u003cdd\u003eSingle replacement filter\u003c\/dd\u003e\n \u003cdt\u003eFuel System\u003c\/dt\u003e\n\u003cdd\u003eGasoline outboard fuel system\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eInstalled inline with the fuel hose at the applicable engine fuel-system location\u003c\/dd\u003e\n \u003cdt\u003eHousing\u003c\/dt\u003e\n\u003cdd\u003eTranslucent plastic housing\u003c\/dd\u003e\n \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eVerify hose size and connection dimensions against the original filter before installation\u003c\/dd\u003e\n \u003cdt\u003eMercury \/ Mariner Reference\u003c\/dt\u003e\n\u003cdd\u003e35-16248\u003c\/dd\u003e\n \u003cdt\u003eTohatsu \/ Nissan Reference\u003c\/dt\u003e\n\u003cdd\u003e369-02230-0; alternate format 369022300M\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 Inline Fuel Filter\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003eNo hose clamps, fuel hose, primer bulb, or other fuel-system components are included unless specifically shown in the order details.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eTurn the engine off, allow it to cool, and work in a well-ventilated area away from ignition sources.\u003c\/li\u003e\n \u003cli\u003eClose or disconnect the fuel supply as appropriate for your engine and keep absorbent material ready for spilled fuel.\u003c\/li\u003e\n \u003cli\u003eLocate the existing filter and note the direction of fuel flow indicated by the arrow on the filter.\u003c\/li\u003e\n \u003cli\u003eRemove the hose clamps and carefully disconnect the fuel lines from the old filter.\u003c\/li\u003e\n \u003cli\u003eInstall the replacement filter with the flow arrow pointing toward the engine.\u003c\/li\u003e\n \u003cli\u003eSecure the fuel lines with suitable clamps and check that the connections are fully seated.\u003c\/li\u003e\n \u003cli\u003ePrime the fuel system according to the engine manufacturer's procedure.\u003c\/li\u003e\n \u003cli\u003eInspect the filter and both connections for fuel leaks before starting the engine.\u003c\/li\u003e\n \u003cli\u003eDo not operate the engine if leakage, damaged hose, loose clamps, or an incorrect connection is found.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\n \u003csummary\u003eHow do I confirm that this filter fits my engine?\u003c\/summary\u003e\n \u003cp\u003eMatch your original filter's reference number and compare the exact engine model, year, stroke type, and hose connection with the compatibility information above. The listed references are Mercury\/Mariner 35-16248 and Tohatsu\/Nissan 369-02230-0 or 369022300M.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eDoes this fit every Mercury, Tohatsu, Nissan, or Mariner outboard from 4 to 30 HP?\u003c\/summary\u003e\n \u003cp\u003eNo blanket 4–30 HP fitment should be assumed. The confirmed applications in the available catalog evidence are narrower, particularly for Mercury\/Mariner and Tohatsu models. Check the exact application and original part number before ordering.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a restricted fuel filter?\u003c\/summary\u003e\n \u003cp\u003ePossible symptoms include hard starting, stalling, hesitation, reduced acceleration, or loss of power. Inspect the filter and the rest of the fuel system before replacing parts, since similar symptoms can have other causes.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eCan I install the filter in either direction?\u003c\/summary\u003e\n \u003cp\u003eNo. Install it in the direction of fuel flow, with the arrow pointing toward the engine. A reversed filter may restrict fuel delivery.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs this an OEM filter?\u003c\/summary\u003e\n \u003cp\u003eThis listing is for an aftermarket replacement filter. Mercury, Mariner, Tohatsu, and Nissan names and part numbers are used only to identify reference applications and compatibility.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat should I do if the connection does not match?\u003c\/summary\u003e\n \u003cp\u003eDo not force the filter or stretch the hose over an unsuitable connection. Stop installation and verify the part number, hose size, flow direction, and engine application.\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\u003eFuel is flammable. Work in a well-ventilated area and keep the filter away from flames, sparks, and hot surfaces.\u003c\/li\u003e\n \u003cli\u003eVerify the part number and physical connections before installation.\u003c\/li\u003e\n \u003cli\u003eInspect the fuel hose and clamps whenever the filter is replaced.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended if you are not familiar with marine fuel systems.\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\u003eMarine replacement parts selected for practical maintenance and repair applications.\u003c\/li\u003e\n \u003cli\u003eClear reference-number and fitment information to help customers compare replacement parts.\u003c\/li\u003e\n \u003cli\u003eSupport for choosing the correct component based on the engine model and original part number.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718270554427,"sku":"12111055-fys","price":20.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/12111055-fys.png?v=1762958709"},{"product_id":"water-pump-impeller-fits-mercury-mariner-15-50-hp-replaces-47-85089-10-821354a2","title":"Water Pump Impeller for Mercury\/Mariner and Chrysler\/Force Outboards – Replaces 47-85089-3, Sierra 18-3057","description":"\u003cstyle\u003e\n\/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n.ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n\/* Base table styles *\/\ntable.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\ntable.ss-table th, table.ss-table td {\n padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n}\n\ntable.ss-table th {\n white-space:nowrap;\n word-break:normal;\n letter-spacing:normal;\n font-weight:600;\n background:#f8fafc;\n}\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 impeller\u003c\/strong\u003e is intended as a replacement impeller for selected Mercury\/Mariner and Chrysler\/Force outboard cooling systems. The impeller circulates cooling water through the engine when the water pump is operating.\u003c\/p\u003e\n\u003cp\u003eCatalog references identify this impeller as a replacement for \u003cstrong\u003eMercury Marine 47-85089-3\u003c\/strong\u003e and \u003cstrong\u003eSierra 18-3057\u003c\/strong\u003e. Do not rely on horsepower or brand alone when ordering; water-pump components can vary by model, year, serial number, and gearcase configuration.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eAftermarket replacement water pump impeller.\u003c\/li\u003e\n \u003cli\u003eDesigned for use in the applicable outboard water-pump assembly.\u003c\/li\u003e\n \u003cli\u003eSingle impeller supplied; housing, gaskets, wear plates, keys, and other service parts are not included unless separately stated.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following references to compare the replacement part with the impeller removed from your engine.\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 \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury Marine\u003c\/td\u003e\n \u003ctd\u003e47-85089-3\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSierra\u003c\/td\u003e\n \u003ctd\u003e18-3057\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eChrysler\/Force\u003c\/td\u003e\n \u003ctd\u003e47-85089-3\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis reference is associated with selected Mercury\/Mariner and Chrysler\/Force outboard cooling-system applications. The available catalog evidence does not establish one universal horsepower, year, or serial-number range for every engine using this reference.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore ordering:\u003c\/strong\u003e match the complete engine model, year, serial number, water-pump housing, and the original impeller or manufacturer part number. Confirm the impeller dimensions, hub, keyway, blade configuration, and rotation against the original component and service information for your engine.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine Compatibility Guidance\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eEngine Brand\u003c\/th\u003e\n \u003cth\u003eApplicable Reference\u003c\/th\u003e\n \u003cth\u003eFitment Requirement\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n \u003ctd\u003e47-85089-3\u003c\/td\u003e\n \u003ctd\u003eConfirm exact model, year, serial range, and water-pump assembly.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eChrysler\/Force\u003c\/td\u003e\n \u003ctd\u003e47-85089-3\u003c\/td\u003e\n \u003ctd\u003eConfirm exact engine application and compare the original impeller before installation.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n \u003cdd\u003eWater pump impeller\u003c\/dd\u003e\n \u003cdt\u003eProduct Format\u003c\/dt\u003e\n \u003cdd\u003eSingle replacement impeller\u003c\/dd\u003e\n \u003cdt\u003eConstruction\u003c\/dt\u003e\n \u003cdd\u003eFlexible impeller material intended for outboard water-pump service\u003c\/dd\u003e\n \u003cdt\u003eApplication\u003c\/dt\u003e\n \u003cdd\u003eSelected Mercury\/Mariner and Chrysler\/Force outboard cooling systems\u003c\/dd\u003e\n \u003cdt\u003eReplacement References\u003c\/dt\u003e\n \u003cdd\u003eMercury Marine 47-85089-3; Sierra 18-3057\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\u003c\/ul\u003e\n\u003cp\u003eWater-pump housing, gaskets, wear plates, keys, seals, and installation hardware are not included unless specifically listed with the product.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eTurn off the engine and follow the manufacturer’s service-manual safety procedures.\u003c\/li\u003e\n \u003cli\u003eRemove the lower unit and water-pump housing according to the engine manufacturer’s instructions.\u003c\/li\u003e\n \u003cli\u003eInspect the housing, wear plate, key, seals, and related components for scoring, wear, debris, or damage.\u003c\/li\u003e\n \u003cli\u003eCompare the replacement impeller with the removed part before installation, including the hub, keyway, dimensions, blade configuration, and rotation.\u003c\/li\u003e\n \u003cli\u003eInstall the impeller in the correct orientation for the pump shaft’s rotation. Use only a lubricant approved by the engine or impeller manufacturer; do not install or operate a new impeller dry.\u003c\/li\u003e\n \u003cli\u003eReassemble the water pump and lower unit using the manufacturer’s torque specifications.\u003c\/li\u003e\n \u003cli\u003eTest the cooling-water discharge and confirm that the engine does not overheat. Never run the outboard without adequate cooling-water supply.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I confirm that this impeller fits my engine?\u003c\/summary\u003e\n \u003cp\u003eMatch the original part number to 47-85089-3 or Sierra 18-3057, then verify the complete engine model, year, serial number, water-pump housing, and impeller dimensions. Brand and horsepower alone are not sufficient for a reliable fitment check.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are common symptoms of a worn impeller?\u003c\/summary\u003e\n \u003cp\u003ePossible symptoms include reduced or intermittent tell-tale water flow, an overheating warning, higher-than-normal operating temperature, or visible damage when the water-pump housing is opened. Inspect the complete cooling system rather than replacing the impeller alone without checking for related damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eShould the impeller be replaced with other water-pump parts?\u003c\/summary\u003e\n \u003cp\u003eInspect the housing, wear plate, key, seals, and gaskets during service. Replace worn or damaged components as required by the engine manufacturer’s service procedure. Those parts are not included with this single impeller.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n \u003cp\u003eNo. This listing is for an aftermarket replacement impeller. Mercury Marine and Sierra numbers are shown only as manufacturer or aftermarket reference numbers for identification and cross-reference purposes.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eCan I install it without checking the serial number?\u003c\/summary\u003e\n \u003cp\u003eNo. Some outboard models use different impellers or water-pump assemblies within the same horsepower family. Always verify the serial-number range and the original part before installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify the part number, dimensions, and physical configuration against the original component before purchase and installation.\u003c\/li\u003e\n \u003cli\u003eDo not assume compatibility from horsepower, brand, or a visually similar impeller alone.\u003c\/li\u003e\n \u003cli\u003eFollow the engine manufacturer’s service manual for removal, installation, torque values, lubrication, and testing.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended if you are not experienced with outboard lower-unit or water-pump service.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM Mercury or Sierra component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — Practical replacement components for outboard maintenance and repair.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Information\u003c\/strong\u003e — Use manufacturer references and complete engine details to confirm fitment before ordering.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSupport for Installation Decisions\u003c\/strong\u003e — Compare the original component and consult the correct service information for your engine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718270587195,"sku":"XK-N08X-FZNE","price":16.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/XK-N08X-FZNE.png?v=1762958710"},{"product_id":"water-pump-repair-kit-fits-mercury-mariner-2-stroke-15-25-hp-4-stroke-9-9-15-hp-replaces-47-85089t7-47-85089q4","title":"Water Pump Repair Kit for Mercury\/Mariner 2-Stroke 15–25 HP and 4-Stroke 9.9–15 HP — Replaces 47-85089T7 and 47-85089Q4","description":"\u003csection\u003e\n\u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003ewater pump repair kit\u003c\/strong\u003e is intended to service the cooling system on selected Mercury and Mariner outboard engines. The listed applications include 2-stroke models from 15 HP through 25 HP produced during the applicable model-year and serial-number ranges, together with specific 4-stroke BigFoot models from 9.9 HP through 15 HP.\u003c\/p\u003e\n\u003cp\u003eThe kit is listed as a replacement for Mercury references \u003cstrong\u003e47-85089T7\u003c\/strong\u003e, \u003cstrong\u003e47-85089Q4\u003c\/strong\u003e, and \u003cstrong\u003e47-85089T4\u003c\/strong\u003e. Related aftermarket reference numbers include Sierra \u003cstrong\u003e18-3215\u003c\/strong\u003e and GLM \u003cstrong\u003e12107\u003c\/strong\u003e. Always compare the original pump components and verify the complete engine model, year, and serial number before ordering.\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eReplacement water-pump service kit for selected Mercury and Mariner outboards.\u003c\/li\u003e\n \u003cli\u003eImpeller made from CR rubber, with stainless-steel pump components as applicable to the kit.\u003c\/li\u003e\n \u003cli\u003eIncludes the listed impeller, washers, gaskets, key, wear plate, and O-ring.\u003c\/li\u003e\n \u003cli\u003eSuitable for routine cooling-system service in saltwater or freshwater applications when correctly matched to the engine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these manufacturer and aftermarket references as cross-reference information only. Part-number comparison does not replace model and serial-number verification.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-85089Q4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-85089T4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3215\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGLM\u003c\/td\u003e\n\u003ctd\u003e12107\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine and Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm the engine brand, model, rated horsepower, stroke, model year, and serial-number range before purchase. The following applications are the listed fitment references for this repair kit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMercury\/Mariner 2-Stroke Engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Mercury and Mariner 2-Stroke Engine Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eSerial or Application Notes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e15 XD\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997–1998\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eBEL serial number 9927000 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e18, 18XD\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1985\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eUSA serial number 5837437 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e20, 20XD\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–1987\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eUSA serial numbers 6443973 through 0T800749\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e25, 25XD\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1987\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eUSA serial number 5705532 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e25, 25XD\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1980–1983\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eAUS serial number 8073158 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e25, 3-cylinder\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1997 and later\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eUSA serial number 0E268781 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e25 Sea Pro; Super 15\u003c\/td\u003e\n\u003ctd\u003e25; 15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1988–1998\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eUSA serial number 0B238464 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e\u003cstrong\u003eMercury\/Mariner 4-Stroke Engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Mercury and Mariner 4-Stroke Engine Compatibility\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eSerial or Application Notes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eBigFoot, 323 cc\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eUSA serial number 0G590000 and up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eBigFoot, 323 cc\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998 and later\u003c\/td\u003e\n\u003ctd\u003e47-85089T7\u003c\/td\u003e\n\u003ctd\u003eUSA serial numbers 0G760300 through 0T979999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater pump repair kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eReplacement water-pump service components\u003c\/dd\u003e\n \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eCR rubber\u003c\/dd\u003e\n \u003cdt\u003eOther Component Material\u003c\/dt\u003e\n\u003cdd\u003eStainless steel, where specified for the included components\u003c\/dd\u003e\n \u003cdt\u003ePackage Dimensions\u003c\/dt\u003e\n\u003cdd\u003e6.57 × 5.98 × 1.34 inches (167 × 152 × 34 mm)\u003c\/dd\u003e\n \u003cdt\u003ePackage Weight\u003c\/dt\u003e\n\u003cdd\u003e0.11 kg (0.24 lb)\u003c\/dd\u003e\n \u003cdt\u003eApplication\u003c\/dt\u003e\n\u003cdd\u003eSelected Mercury and Mariner outboards operating in freshwater or saltwater\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 × Impeller; replacement reference 47-85089-10\u003c\/li\u003e\n \u003cli\u003e2 × Plastic washers; replacement reference 12-86645-1\u003c\/li\u003e\n \u003cli\u003e2 × Gaskets; replacement reference 27-99326\u003c\/li\u003e\n \u003cli\u003e1 × Key; replacement reference 28-8M0032838\u003c\/li\u003e\n \u003cli\u003e1 × Wear plate; replacement reference 85083\u003c\/li\u003e\n \u003cli\u003e1 × O-ring; replacement reference 25-69202\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery or follow the engine manufacturer's applicable safety procedure, then remove the lower unit from the outboard.\u003c\/li\u003e\n \u003cli\u003eDisassemble the water-pump housing carefully and note the order and orientation of the existing components.\u003c\/li\u003e\n \u003cli\u003eClean all mating surfaces and inspect the pump housing, wear plate area, and driveshaft for scoring, distortion, corrosion, or debris.\u003c\/li\u003e\n \u003cli\u003eInstall the supplied wear plate, gaskets, washers, O-ring, and key in the correct order for the specific engine.\u003c\/li\u003e\n \u003cli\u003eLubricate the impeller and pump housing with a suitable marine lubricant or soapy water before assembly. Do not use a petroleum product that may damage the rubber.\u003c\/li\u003e\n \u003cli\u003eInstall the impeller on the driveshaft, turning the shaft in the manufacturer's specified direction so the vanes enter the housing correctly.\u003c\/li\u003e\n \u003cli\u003eReassemble the pump housing, tighten fasteners to the engine manufacturer's specified torque, and reinstall the lower unit.\u003c\/li\u003e\n \u003cli\u003eAfter installation, run the engine according to the manufacturer's procedure and confirm a normal cooling-water discharge before returning the boat to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting and FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I confirm that this kit fits my Mercury or Mariner engine?\u003c\/summary\u003e\n \u003cp\u003eMatch the engine's brand, model, horsepower, stroke, model year, and serial number with the compatibility tables. Serial-number verification is especially important for transition-year engines. Compare the original impeller, wear plate, key, and gasket arrangement before installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a worn water-pump impeller?\u003c\/summary\u003e\n \u003cp\u003ePossible symptoms include overheating at idle or low speed, a weak or missing telltale stream, reduced cooling-water flow, and an engine warning or alarm. Stop operating an overheating engine and investigate the cooling system before further use.\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 during routine maintenance and replace it when the vanes are cracked, permanently set, damaged, or worn. Replacement intervals vary with usage and water conditions; sandy, silty, and saltwater operation can increase wear.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this an OEM Mercury part?\u003c\/summary\u003e\n \u003cp\u003eNo. This listing is for an aftermarket replacement kit intended to correspond to the listed Mercury, Sierra, and GLM reference numbers. Mercury, Mariner, Sierra, and GLM are trademarks of their respective owners.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDoes the kit include all components shown in the package list?\u003c\/summary\u003e\n \u003cp\u003eThe listed package contains one impeller, two plastic washers, two gaskets, one key, one wear plate, and one O-ring. Confirm the contents against the package and compare them with the original pump assembly before beginning installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eVerify the complete engine model and serial number before ordering; horsepower alone is not sufficient to confirm fitment.\u003c\/li\u003e\n \u003cli\u003eCompare the original part and pump assembly with the listed references and package contents before installation.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement product, not an original equipment manufacturer component.\u003c\/li\u003e\n \u003cli\u003eFollow the engine manufacturer's service instructions, torque specifications, and safety procedures.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended if you are not experienced with outboard lower-unit or water-pump service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — We provide replacement components for common marine maintenance and repair applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFitment-Focused Listings\u003c\/strong\u003e — Product references and application details are provided to help customers compare parts before ordering.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eService-Ready Components\u003c\/strong\u003e — Replacement parts are selected for practical maintenance and repair use in marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718270619963,"sku":"O0-ILG7-8CVQ","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/O0-ILG7-8CVQ.png?v=1762958712"},{"product_id":"water-pump-repair-kit-fits-mercury-mariner-2-stroke-15-25hp-4-stroke-9-9-15hp-replaces-99157t2-46-99157t2","title":"Water Pump Repair Kit for Mercury\/Mariner 2-Stroke 15XD, 18XD, 20XD, 25XD \u0026 25 HP 3-Cylinder Outboards – Replaces 46-99157T2","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003ewater pump repair kit with housing\u003c\/strong\u003e is designed to service the cooling system on selected Mercury and Mariner 2-stroke outboards. Catalog references identify the applicable engine group as the 15XD, 18XD, 20XD, 25XD, and 25 HP 3-cylinder models from 1984 onward. Always compare your engine model, serial number, and original pump components before ordering.\u003c\/p\u003e\n\u003cp\u003eThe kit is associated with the Mercury OEM reference \u003cstrong\u003e46-99157T2\u003c\/strong\u003e. This is an aftermarket replacement kit intended to restore water-pump performance when the original housing, impeller, gaskets, seals, or related components are worn.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eService-style replacement for the original water pump assembly.\u003c\/li\u003e\n\u003cli\u003eIncludes a pump housing and the listed service components.\u003c\/li\u003e\n\u003cli\u003eSuitable for selected Mercury and Mariner 2-stroke applications only; it is not listed here as a universal fit for all 15–25 HP engines.\u003c\/li\u003e\n\u003c\/ul\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\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following reference to compare this replacement with the number shown on your original pump component or parts catalog.\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\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\u003eMercury OEM\u003c\/td\u003e\n \u003ctd\u003e46-99157T2\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury related housing reference\u003c\/td\u003e\n \u003ctd\u003e46-99157A02\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eGLM catalog reference\u003c\/td\u003e\n \u003ctd\u003e12014\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe catalog relationship for 46-99157T2 identifies the following Mercury and Mariner 2-stroke engine group. The year condition shown in the catalog is 1984 and later; serial-number coverage can vary by market and production change, so verify the complete engine identification before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Engine 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\u003eYear Condition\u003c\/th\u003e\n \u003cth\u003eOEM 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\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e15XD\u003c\/td\u003e\n \u003ctd\u003e15\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1984 and later\u003c\/td\u003e\n \u003ctd\u003e46-99157T2\u003c\/td\u003e\n \u003ctd\u003eVerify serial number and original pump configuration.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e18XD\u003c\/td\u003e\n \u003ctd\u003e18\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1984 and later\u003c\/td\u003e\n \u003ctd\u003e46-99157T2\u003c\/td\u003e\n \u003ctd\u003eVerify serial number and original pump configuration.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e20XD\u003c\/td\u003e\n \u003ctd\u003e20\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1984 and later\u003c\/td\u003e\n \u003ctd\u003e46-99157T2\u003c\/td\u003e\n \u003ctd\u003eVerify serial number and original pump configuration.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e25XD\u003c\/td\u003e\n \u003ctd\u003e25\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1984 and later\u003c\/td\u003e\n \u003ctd\u003e46-99157T2\u003c\/td\u003e\n \u003ctd\u003eVerify serial number and original pump configuration.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMercury\u003c\/td\u003e\n \u003ctd\u003e25 HP 3-cylinder\u003c\/td\u003e\n \u003ctd\u003e25\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1984 and later\u003c\/td\u003e\n \u003ctd\u003e46-99157T2\u003c\/td\u003e\n \u003ctd\u003eVerify serial number and original pump configuration.\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMariner\u003c\/td\u003e\n \u003ctd\u003e15XD, 18XD, 20XD, 25XD and 25 HP 3-cylinder\u003c\/td\u003e\n \u003ctd\u003e15–25\u003c\/td\u003e\n \u003ctd\u003e2-Stroke\u003c\/td\u003e\n \u003ctd\u003e1984 and later\u003c\/td\u003e\n \u003ctd\u003e46-99157T2\u003c\/td\u003e\n \u003ctd\u003eVerify market-specific serial number and original pump configuration.\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\u003eWater pump repair kit with housing\u003c\/dd\u003e\n \u003cdt\u003eApplication\u003c\/dt\u003e\n \u003cdd\u003eSelected Mercury and Mariner 2-stroke outboards\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n \u003cdd\u003eReplacement service installation\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n \u003cdd\u003eStainless steel 316\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n \u003cdd\u003eMetallic\u003c\/dd\u003e\n \u003cdt\u003ePackage Dimensions\u003c\/dt\u003e\n \u003cdd\u003e151 × 103 × 52 mm (5.94 × 4.06 × 2.05 inches)\u003c\/dd\u003e\n \u003cdt\u003ePackage Weight\u003c\/dt\u003e\n \u003cdd\u003e0.29 kg (10.2 ounces)\u003c\/dd\u003e\n \u003cdt\u003eWarranty\u003c\/dt\u003e\n \u003cdd\u003e1-year limited warranty\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e1 × Pump housing assembly — 99157A02, 99157A1\u003c\/li\u003e\n \u003cli\u003e1 × Face plate — 85083\u003c\/li\u003e\n \u003cli\u003e1 × Gasket — 993261\u003c\/li\u003e\n \u003cli\u003e1 × Key — 8M0032838\u003c\/li\u003e\n \u003cli\u003e1 × Seal — 85090001, 85090\u003c\/li\u003e\n \u003cli\u003e2 × Transparent washer — 12-86645-1\u003c\/li\u003e\n \u003cli\u003e4 × Insulator — 23-85095\u003c\/li\u003e\n \u003cli\u003e3 × O-ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n \u003cli\u003eDisconnect the battery or spark plug leads as appropriate for the engine and secure the propeller before servicing.\u003c\/li\u003e\n \u003cli\u003ePlace a drain pan under the gearcase and drain the gear oil if required by the service procedure.\u003c\/li\u003e\n \u003cli\u003eRemove the fasteners securing the lower unit to the driveshaft housing.\u003c\/li\u003e\n \u003cli\u003eLower the gearcase carefully and disconnect or move the speedometer tube if fitted.\u003c\/li\u003e\n \u003cli\u003eRemove the existing water pump housing, face plate, impeller, key, gaskets, seals, and related parts.\u003c\/li\u003e\n \u003cli\u003eClean the mating surfaces thoroughly and remove old gasket material or debris.\u003c\/li\u003e\n \u003cli\u003eInstall the new gasket, face plate, impeller, key, seal, and housing in the correct order. Lubricate the impeller with a suitable lubricant before assembly.\u003c\/li\u003e\n \u003cli\u003eReinstall the lower unit while aligning the driveshaft, shift shaft, and water tube.\u003c\/li\u003e\n \u003cli\u003eTighten the fasteners according to the engine manufacturer’s service procedure and refill the gearcase with the correct lubricant.\u003c\/li\u003e\n \u003cli\u003eRun the engine only in a suitable water supply and confirm a steady tell-tale stream before returning the boat to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n \u003csummary\u003eHow do I confirm this kit fits my engine?\u003c\/summary\u003e\n \u003cp\u003eMatch the engine brand, exact model, stroke, year condition, and serial number against the compatibility information. The most reliable check is to compare the original pump assembly and its OEM reference with 46-99157T2 before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDoes this listing fit Mercury or Mariner 4-stroke 9.9–15 HP engines?\u003c\/summary\u003e\n \u003cp\u003eThis listing is described for the cataloged Mercury and Mariner 2-stroke applications shown above. Do not use the 4-stroke 9.9–15 HP description from an earlier listing as confirmation of fitment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eDoes this kit fit every Mercury or Mariner 15–25 HP engine?\u003c\/summary\u003e\n \u003cp\u003eNo. Horsepower alone is not sufficient for identification. Confirm the exact model, production year, serial number, and pump configuration before installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a failing water pump?\u003c\/summary\u003e\n \u003cp\u003eSymptoms may include overheating at idle or low speed, a weak or missing tell-tale stream, an overheat alarm, or a damaged impeller with cracked or missing vanes.\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 during routine seasonal maintenance and replace it when the service schedule, operating conditions, or visible wear indicate replacement is necessary. Saltwater, sand, and long periods of storage can accelerate wear.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n \u003cp\u003eNo. This is an aftermarket replacement kit associated with the Mercury OEM reference 46-99157T2. Mercury and Mariner are referenced only for application identification.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eIs everything needed for installation included?\u003c\/summary\u003e\n \u003cp\u003eThe listed housing, face plate, gasket, key, seal, washers, insulators, and O-rings are included. You will need suitable tools, the correct service information, and fresh gearcase lubricant if the service procedure requires it.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n \u003csummary\u003eWhat should I do if the engine still overheats after installation?\u003c\/summary\u003e\n \u003cp\u003eStop operation and check impeller orientation, key engagement, gasket and seal seating, water-tube alignment, cooling-water intake passages, and the tell-tale outlet. If the cause is not clear, have the cooling system inspected by a qualified marine technician.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003eConfirm the exact engine model, year, serial number, stroke, and original pump configuration before purchase.\u003c\/li\u003e\n \u003cli\u003eDo not rely on horsepower alone to determine compatibility.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not a Mercury or Mariner OEM component.\u003c\/li\u003e\n \u003cli\u003eFollow the engine manufacturer’s service instructions and use appropriate personal protective equipment.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended if you are not experienced with outboard lower-unit or water-pump service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — Practical aftermarket components for routine outboard maintenance and repair.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Fitment\u003c\/strong\u003e — Check model and serial details before ordering to help ensure the correct replacement.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSupport for Maintenance Work\u003c\/strong\u003e — Parts are supplied for repair and service applications using the information provided on this page.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718270652731,"sku":"18KM006OC","price":31.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/18KM006OC.png?v=1762958713"},{"product_id":"water-pump-repair-kit-fits-mercury-mariner-9-9-25-hp-replaces-46-99157t2-46-85098a2","title":"Water Pump Repair Kit with Housing – Fits Mercury\/Mariner 2-Stroke 15–25 HP \u0026 4-Stroke 9.9–15 HP","description":"\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis \u003cstrong\u003ewater pump repair kit with pump housing\u003c\/strong\u003e is designed to service the upper water pump assembly on selected Mercury and Mariner outboard engines. It covers listed 2-stroke applications including 15XD, 18, 18XD, 20XD, 25XD, Sea Pro, Marathon, and Super 15 models, plus listed 4-stroke 9.9 HP and 15 HP Bigfoot models with 323 cc engines.\u003c\/p\u003e\n \u003cp\u003eThe kit is an aftermarket replacement for the Mercury\/Mariner water pump references listed below. Always compare the original pump, engine model, and serial number before ordering.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003eUpper water pump service kit supplied with pump housing.\u003c\/li\u003e\n \u003cli\u003eDesigned for selected Mercury and Mariner outboard applications.\u003c\/li\u003e\n \u003cli\u003eIncludes a neoprene marine impeller and replacement sealing components.\u003c\/li\u003e\n \u003cli\u003eStainless-steel pump housing for corrosion-resistant marine service.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n \u003cp\u003eUse these manufacturer and aftermarket references to compare the kit with your existing water pump components.\u003c\/p\u003e\n \u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n \u003c\/style\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eReference type\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e46-99157T2\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e46-99157A02\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e46-99157A2\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e46-85098A2\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e85098A2\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e99157A2\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e99157T2\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGLM Marine\u003c\/td\u003e\n\u003ctd\u003e12014\u003c\/td\u003e\n\u003ctd\u003eAftermarket 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\n\u003csection\u003e\n \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eFitment depends on the complete engine model and serial-number range. The following applications are listed for this pump kit; confirm the original part and serial number before installation.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Mercury and Mariner Compatibility\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel or application\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eSerial or application notes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e15XD \/ Bigfoot\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e18 \/ 18XD\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e20XD\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e25XD\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003eSea Pro \/ Marathon \/ Super 15\u003c\/td\u003e\n\u003ctd\u003e15–25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eConfirm the exact model and serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e3-cylinder application listed in the company catalog\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eVerify the original pump and serial number carefully before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e9.9 Bigfoot, 323 cc\u003c\/td\u003e\n\u003ctd\u003e9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine serial number.\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\u003ctd\u003e15 Bigfoot, 323 cc\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eConfirm the engine serial number.\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\u003eWater pump repair kit with pump housing\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eUpper water pump assembly\u003c\/dd\u003e\n \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eStainless steel\u003c\/dd\u003e\n \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene marine rubber\u003c\/dd\u003e\n \u003cdt\u003eGasket Material\u003c\/dt\u003e\n\u003cdd\u003eNon-asbestos\u003c\/dd\u003e\n \u003cdt\u003eProduct Status\u003c\/dt\u003e\n\u003cdd\u003eAftermarket replacement, not an OEM-manufactured component\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 \u003cp\u003eThe kit is supplied with the pump housing and the service components needed for the listed water pump applications.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e1 x Pump housing assembly\u003c\/li\u003e\n \u003cli\u003e1 x Neoprene impeller\u003c\/li\u003e\n \u003cli\u003e1 x Face plate\u003c\/li\u003e\n \u003cli\u003e1 x Gasket\u003c\/li\u003e\n \u003cli\u003e1 x Impeller key\u003c\/li\u003e\n \u003cli\u003e1 x Seal\u003c\/li\u003e\n \u003cli\u003e2 x Washers\u003c\/li\u003e\n \u003cli\u003e4 x Insulators\u003c\/li\u003e\n \u003cli\u003e3 x O-rings\u003c\/li\u003e\n \u003cli\u003e1 x Water tube guide sleeve\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cp\u003eComponent appearance may vary slightly from the original parts. Compare the supplied components with the removed parts before installation.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eDisconnect the battery and remove the engine cover.\u003c\/li\u003e\n \u003cli\u003eSupport the engine securely and remove the lower unit according to the engine service procedure.\u003c\/li\u003e\n \u003cli\u003eRemove the water pump housing from the top of the gearcase.\u003c\/li\u003e\n \u003cli\u003eRemove the old impeller, key, face plate, gaskets, seals, and related service parts.\u003c\/li\u003e\n \u003cli\u003eClean the mating surfaces and inspect the driveshaft, water tube, and pump plate for wear or damage.\u003c\/li\u003e\n \u003cli\u003eInstall the new gasket, face plate, impeller, key, seals, and housing. Ensure the impeller key is correctly seated.\u003c\/li\u003e\n \u003cli\u003eUse a marine-safe lubricant where appropriate and tighten fasteners to the engine manufacturer’s specifications.\u003c\/li\u003e\n \u003cli\u003eReinstall the lower unit, carefully aligning the driveshaft and water tube.\u003c\/li\u003e\n \u003cli\u003eTest the engine in a suitable water supply and confirm a steady cooling-water tell-tale stream before normal operation.\u003c\/li\u003e\n \u003c\/ol\u003e\n \u003cp\u003eProfessional installation is recommended when removing or reinstalling the lower unit.\u003c\/p\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 kit fits my engine?\u003c\/summary\u003e\n \u003cp\u003eMatch the engine brand, exact model, horsepower, stroke, and serial number with the compatibility information. Also compare the original pump housing, impeller, and mounting arrangement with the kit before purchase.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat are common signs of a failing water pump?\u003c\/summary\u003e\n \u003cp\u003eCommon symptoms include overheating at idle or low speed, a weak or intermittent tell-tale stream, and reduced cooling-water flow. A blocked intake, thermostat problem, or damaged water tube can produce similar symptoms.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\n \u003cp\u003eInspect the impeller regularly and replace it when the blades are damaged, hardened, permanently set, or showing signs of wear. Sandy or saltwater operation may require more frequent inspection.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eCan I install the kit myself?\u003c\/summary\u003e\n \u003cp\u003eInstallation is possible for an experienced marine technician or mechanic, but the lower unit is heavy and must be aligned correctly. Follow the engine service manual and use the specified torque values.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eWhat if the engine still overheats after installation?\u003c\/summary\u003e\n \u003cp\u003eCheck the water-intake screens, water tube alignment, thermostat, internal cooling passages, pump plate, and tell-tale passage. Confirm that the impeller key and impeller rotation are installed correctly.\u003c\/p\u003e\n \u003c\/details\u003e\n \u003cdetails\u003e\n \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n \u003cp\u003eNo. This is an aftermarket replacement kit intended to service the listed Mercury and Mariner water pump applications. Mercury and Mariner are manufacturer trademarks used only to identify compatibility.\u003c\/p\u003e\n \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify the exact engine model, stroke, horsepower, and serial number before ordering.\u003c\/li\u003e\n \u003cli\u003eDo not operate an outboard with insufficient cooling-water flow or signs of overheating.\u003c\/li\u003e\n \u003cli\u003eInspect all mating surfaces and related cooling-system components during installation.\u003c\/li\u003e\n \u003cli\u003eThis aftermarket kit is not manufactured by Mercury or Mariner.\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\u003eMarine Replacement Parts\u003c\/strong\u003e — We supply aftermarket service parts for common outboard maintenance and repair applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product information is organized around engine model, horsepower, stroke, serial range, and replacement references.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eService Support\u003c\/strong\u003e — Compare the original component and consult a qualified marine technician whenever fitment or installation is uncertain.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718270685499,"sku":"WX-1N8V-H5PI","price":42.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/WX-1N8V-H5PI.png?v=1762958715"},{"product_id":"water-pump-impeller-kit-fits-mercury-force-25-50-hp-replaces-47-8508910-47-850893-47-8m0027792","title":"Aftermarket Water Pump Impeller Kit with Key for Select Mercury\/Mariner, Force \u0026 Chrysler Outboards – Replaces 47-8508910, 47-850893, 47-8M0027792","description":"\u003cstyle\u003e\n .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003csection\u003e\n \u003ch2\u003eProduct Details\u003c\/h2\u003e\n \u003cp\u003eThis aftermarket \u003cstrong\u003ewater pump impeller kit\u003c\/strong\u003e is designed for select Mercury and Mariner outboard motors, as well as select Force and Chrysler models. The documented applications include 2-stroke and 4-stroke outboards ranging from 18 HP through 75 HP, subject to the model, year, gear ratio, and serial-number conditions listed below. Replacing a worn or damaged impeller helps maintain proper water circulation through the engine cooling system.\u003c\/p\u003e\n \u003cp\u003eThe impeller is offered as a kit with one impeller and one impeller key. It is listed as a replacement reference for Mercury Marine part numbers 47-85089-1, 47-85089-3, 47-85089-10, 47-85089-20, 47-8508910, 47-850893, 47-8M0024502, and 47-8M0027792, along with selected aftermarket references shown in the part-number matrix.\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Direct replacement for applications using the listed impeller specification; no modification is intended.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene rubber impeller with a metal-alloy hub.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eKit contents:\u003c\/strong\u003e One water pump impeller and one impeller key.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFitment verification:\u003c\/strong\u003e Match the complete engine model, stroke, year or serial range, and gear-ratio notes before ordering.\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 these references to compare the replacement with the number shown on your original part or in your engine parts catalog. Part-number correspondence does not replace verification of the complete engine application.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-85089-1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-85089-3\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-85089-10\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-85089-20\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-8M0024502\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMercury Marine\u003c\/td\u003e\n\u003ctd\u003e47-8M0027792\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3057\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCEF Marine\u003c\/td\u003e\n\u003ctd\u003e500315\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMallory Marine\u003c\/td\u003e\n\u003ctd\u003e9-45303\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eQuickMariner\u003c\/td\u003e\n\u003ctd\u003e8508910\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 and Model Compatibility\u003c\/h2\u003e\n \u003cp\u003eConfirm the engine model, stroke, year or serial range, and any ratio note in the applicable table. Similar horsepower ratings can use different water-pump components, so horsepower alone is not sufficient for fitment.\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Mercury and Mariner Outboards Compatibility\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears or Serial Condition\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003e18 HP\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial 5837437-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e20 HP\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial 6443973-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial 5705532-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e25XD, 25 Sea Pro\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial 5705532-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e25 HP, 3-cylinder\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial E268781-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998-2006\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e30 HP Jet\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial G590000-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e30 HP, 2-cylinder\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial G053314-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e30 HP\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2006\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e40 HP, 2-cylinder\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial G053314-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e40 HP, 3-cylinder\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial G531301-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e40 HP\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial G231123-G760299\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e40 HP\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial G760300-T408999\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e2:1 ratio\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e40 HP\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999-2007\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e45 HP Bodensee\u003c\/td\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial G231123-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e45 HP\u003c\/td\u003e\n\u003ctd\u003e45\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995-2000\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e50 HP, 3-cylinder\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial G590000-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e50 HP\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eSerial G231123-UP\u003c\/td\u003e\n\u003ctd\u003e47-8508910\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e50 HP\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995-2000\u003c\/td\u003e\n\u003ctd\u003e47-8508910\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 \u003cp\u003eThis kit also covers the following select Force and Chrysler applications:\u003c\/p\u003e\n \u003cdiv class=\"ss-table-wrap\"\u003e\n \u003ctable class=\"ss-table\" aria-label=\"Force and Chrysler Outboards Compatibility\"\u003e\n \u003cthead\u003e\u003ctr\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\u003eSerial Condition\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003e25 HP\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1996-1998\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eE127700-E344999\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e40 HP\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995-1999\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eE093700-E369299\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e50 HP\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995-1999\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eE093700-E369299\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e75 HP\u003c\/td\u003e\n\u003ctd\u003e75\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999\u003c\/td\u003e\n\u003ctd\u003e47-850893\u003c\/td\u003e\n\u003ctd\u003eE345000-UP\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 Specifications\u003c\/h2\u003e\n \u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater pump impeller kit\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber with metal-alloy hub\u003c\/dd\u003e\n \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e6\u003c\/dd\u003e\n \u003cdt\u003eImpeller Height\u003c\/dt\u003e\n\u003cdd\u003e12.6 mm (0.50 in)\u003c\/dd\u003e\n \u003cdt\u003eOverall Diameter\u003c\/dt\u003e\n\u003cdd\u003e73.8 mm (2.91 in)\u003c\/dd\u003e\n \u003cdt\u003eHub Shaft Diameter\u003c\/dt\u003e\n\u003cdd\u003e16.0 mm (0.63 in)\u003c\/dd\u003e\n \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e40 g (1.41 oz)\u003c\/dd\u003e\n \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n \u003cdt\u003eIncluded Key\u003c\/dt\u003e\n\u003cdd\u003eImpeller key 28-85119\u003c\/dd\u003e\n \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eWhat Is Included\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Water pump impeller\u003c\/li\u003e\n \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Impeller key, 28-85119\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n \u003col\u003e\n \u003cli\u003eDisconnect the battery and remove the spark plug wires before beginning work.\u003c\/li\u003e\n \u003cli\u003eDrain the gear lubricant from the lower unit.\u003c\/li\u003e\n \u003cli\u003eRemove the bolts securing the lower unit to the engine midsection.\u003c\/li\u003e\n \u003cli\u003eSeparate the lower unit carefully and disconnect any speedometer tube or shift linkage that is attached.\u003c\/li\u003e\n \u003cli\u003eLocate and remove the water-pump housing cover.\u003c\/li\u003e\n \u003cli\u003eNote the installed direction of the old impeller blades before removal.\u003c\/li\u003e\n \u003cli\u003eRemove the old impeller and impeller key from the driveshaft.\u003c\/li\u003e\n \u003cli\u003eClean the pump housing, wear plate, and mating surfaces.\u003c\/li\u003e\n \u003cli\u003eInstall the supplied key into the driveshaft slot.\u003c\/li\u003e\n \u003cli\u003eInstall the new impeller while turning the driveshaft in the direction required to position the blades correctly.\u003c\/li\u003e\n \u003cli\u003eReassemble the pump housing with new gaskets or seals where required, and torque fasteners according to the engine manufacturer specifications.\u003c\/li\u003e\n \u003cli\u003eReinstall the lower unit, refill the gearcase with the correct lubricant, and check the cooling-water stream during the initial test.\u003c\/li\u003e\n \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eTroubleshooting and FAQ\u003c\/h2\u003e\n \u003cdetails\u003e\u003csummary\u003eHow do I find my engine serial number?\u003c\/summary\u003e\u003cp\u003eThe serial number is commonly located on a metal plate or label on the outboard transom-mounting bracket. Use the serial number together with the model and stroke when confirming fitment.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon signs include overheating at idle or low speed, a weak or missing telltale stream, and a dry, cracked, or brittle impeller during inspection.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\u003cp\u003eReplacement intervals depend on operating conditions and the engine manufacturer recommendations. Frequent use in saltwater, sand, or silt can accelerate wear; inspect the impeller regularly and replace it when damaged, hardened, cracked, or when cooling performance declines.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eCan I install this part myself?\u003c\/summary\u003e\u003cp\u003eInstallation is possible for a person with suitable mechanical experience and tools. If you are not familiar with lower-unit removal, shift-linkage adjustment, water-pump assembly, or torque procedures, professional installation is recommended.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement part. The referenced brand names and part numbers are used to identify compatibility and cross-reference applications only.\u003c\/p\u003e\u003c\/details\u003e\n \u003cdetails\u003e\u003csummary\u003eWhat should I verify before ordering?\u003c\/summary\u003e\u003cp\u003eCompare your original impeller and key, then confirm the complete model, horsepower, stroke, year or serial range, and any gear-ratio condition listed in the compatibility tables.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n \u003ch2\u003eSafety and Important Information\u003c\/h2\u003e\n \u003cul\u003e\n \u003cli\u003eVerify the model, stroke, year or serial range, and original-part dimensions before purchase.\u003c\/li\u003e\n \u003cli\u003eDo not operate an outboard without adequate cooling-water supply during testing.\u003c\/li\u003e\n \u003cli\u003eImproper lower-unit, shift-linkage, water-pump, or gasket installation can cause overheating or engine damage.\u003c\/li\u003e\n \u003cli\u003eThis is an aftermarket replacement, not an OEM component. Brand names and part numbers are used for reference purposes only.\u003c\/li\u003e\n \u003cli\u003eProfessional installation is recommended when the required service procedures or torque specifications are unfamiliar.\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 replacement parts designed for demanding real-world operating conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGlobal Fulfillment\u003c\/strong\u003e — Delivery options and estimated transit times are shown at checkout based on destination and service availability.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — We work with manufacturing partners to provide replacement components at competitive prices.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723789242683,"sku":"24KM108-QM","price":21.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/24KM108-QM.png?v=1763031804"}],"url":"https:\/\/seasierra.com\/collections\/mercury-4-stroke-18hp-outboard-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}