{"title":"Force 2-Stroke 18HP Outboard Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px 0;\"\u003e\n  \u003cp\u003eThis page covers Force 2-Stroke 18HP outboard engines. Use it to find compatible parts and practical service information, including maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Force collection. Scroll to the bottom of this page to start browsing parts for this engine. On the collection page, use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/force-outboard-parts\" style=\"display:inline-block;padding:10px 14px;border:1px solid #0b5; border-radius:6px; text-decoration:none;\"\u003eBrowse All Force Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eHow to Identify Your 18HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the identification plate on the transom clamp bracket or swivel bracket. It lists the model and serial number.\u003c\/li\u003e\n    \u003cli\u003eRecord the full model code and serial number. Suffix letters typically indicate shaft length (S\/L), starting method (manual\/electric), and revision level.\u003c\/li\u003e\n    \u003cli\u003eThese are 2-stroke models: confirm whether your engine is premix or has an oil-injection system. Look for an external oil tank or premix instructions on the cowl.\u003c\/li\u003e\n    \u003cli\u003eNote configuration details like short vs. long shaft and manual vs. electric start to verify parts compatibility.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eEngine Overview\u003c\/h2\u003e\n  \u003ch3\u003eForce 18HP 2‑Stroke Platform\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:960px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInline‑2, carbureted 2‑stroke; manual or electric start; tiller or remote options depending on model.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e18HP 2‑Stroke models in short- and long‑shaft variants; manual (rope) and electric‑start versions.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eLight weight, simple upkeep, strong low‑end thrust for small skiffs, jons, and tenders.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eSome components cross‑reference with Chrysler\/Mercury‑era designs. Cooling and ignition parts can vary by year—confirm with full model and serial.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for typical recreational use. Always follow the procedures and schedules in your official service manual.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;max-width:960px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInspect for water intrusion (milky) or metal. Replace seals if contamination is found.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/force-outboard-parts\"\u003eForce Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eCheck heat range and gap; replace fouled or worn plugs to restore idle and throttle response.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\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:6px 0;\"\u003eFuel filter \/ inline filter\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEvery 100 hrs or each season\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eReplace clogged filters; inspect primer bulb and fuel lines for cracks or air leaks.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInspect annually; replace every 1–2 seasons\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEssential for cooling. Replace sooner if weak telltale or overheat alarm occurs.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/force-water-pump-repair-kits\"\u003eForce Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eAnodes (zincs)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eQuarterly in salt\/brackish; seasonally in fresh\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eReplace when ~50% consumed. Match anode material to your water type.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\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:6px 0;\"\u003e2‑Stroke oil \/ premix\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEach fuel fill\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eUse NMMA TC‑W3 marine oil. Follow your manual for the exact ratio (many vintage models run 50:1).\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/force-outboard-parts\"\u003eForce Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eThermostat\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEvery 2–3 seasons or if running cold\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eA stuck‑open stat can cause rich running and excess smoke; replace if out of spec.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/force-outboard-parts\"\u003eForce Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eLower unit seals (if leaking)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eAs needed after pressure\/vac test\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eIf gear oil shows water or fishing line damage at the propshaft, reseal the gearcase.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/force-lower-unit-seal-kits\"\u003eForce Lower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service: \u003ca href=\"https:\/\/seasierra.com\/collections\/force-outboard-parts\"\u003eForce Outboard Parts\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System: \u003ca href=\"https:\/\/seasierra.com\/collections\/force-water-pump-repair-kits\"\u003eForce Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System: \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropellers \u0026amp; Hardware: \u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase Seals \u0026amp; Gaskets: \u003ca href=\"https:\/\/seasierra.com\/collections\/force-lower-unit-seal-kits\"\u003eForce Lower Unit Seal Kits\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=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;max-width:960px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eWeak telltale or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInspect intake screen for blockage; verify impeller condition; test thermostat; confirm telltale hose is clear.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eWater pump kit, intake screen, thermostat, gaskets\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eCheck prop for damage\/cavitation; replace fuel filter; verify primer bulb stays firm; inspect and clean carburetor circuits; confirm compression.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003ePropeller, fuel filter, spark plugs, carburetor rebuild kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eHard starting or rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eVerify choke\/enrichment function; inspect fuel lines for air leaks; set plug gap; clean low‑speed jets; synchronize throttle plates.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eSpark plugs, fuel line\/primer bulb, carburetor kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eExcessive smoke (2‑stroke)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eConfirm correct fuel\/oil ratio; avoid extended idling; check for stuck choke; ensure thermostat isn’t stuck open.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eSpark plugs, thermostat, carburetor kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eGearcase noise or metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eDrain and inspect oil; check for fishing line at propshaft; perform pressure\/vacuum test; verify prop nut\/cotter is secure.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eLower unit seal kit, bearings, shims, fresh gear lube\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable across different years of Force 18HP engines?\u003c\/summary\u003e\n    \u003cp\u003eMany Force components carry over between nearby model years, but ignition, cooling, and gearcase parts can change with production revisions. Always confirm with the full model and serial number 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\u003eInspect annually and replace every 1–2 seasons, or immediately if you see a weak telltale, overheating, or sand\/silt use. Preventive replacement is inexpensive insurance on older motors.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change lower unit gear oil?\u003c\/summary\u003e\n    \u003cp\u003eEvery 100 hours or once per year. Change sooner after any impact, suspected water intrusion, or submersion. If the oil is milky or metallic, service seals and investigate internal wear.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the model and serial number, shaft length (short\/long), start type (manual\/electric), and any observed differences (cowl style, control type). Photos of the ID plate and the part needing replacement help ensure a precise match.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px 0;\"\u003e\n  \u003cp\u003eReady to find parts that fit your Force 2‑Stroke 18HP? Browse the main Force collection by horsepower, year, and model to narrow results quickly.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/force-outboard-parts\" style=\"display:inline-block;padding:10px 14px;border:1px solid #0b5; border-radius:6px; text-decoration:none;\"\u003eShop Force Outboard Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px;color:#555;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"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-kit-fits-mercury-mariner-force-8-25-hp-replaces-99157t2-46-99157t2","title":"Water Pump Impeller Repair Kit – Replaces Sierra 18-3214 and Force 46-43024A7","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis \u003cstrong\u003ewater pump impeller repair kit\u003c\/strong\u003e is intended for servicing the cooling-water pump of compatible marine outboards. The available catalog reference identifies the kit as Sierra \u003cstrong\u003e18-3214\u003c\/strong\u003e, an impeller repair kit that replaces Force part number \u003cstrong\u003e46-43024A7\u003c\/strong\u003e.\u003c\/p\u003e\n  \u003cp\u003eThe catalog evidence identifies this product as an impeller repair kit, not as a complete water-pump housing assembly. Use the part-number and application information below together with your engine's exact model, year, serial number, and original component before ordering.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Water pump impeller repair kit\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstallation location:\u003c\/strong\u003e Water pump in the outboard lower unit or gearcase\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCatalog reference:\u003c\/strong\u003e Sierra 18-3214\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eReplacement reference:\u003c\/strong\u003e Force 46-43024A7\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eThese references are shown as product or replacement numbers in the available catalog material. They are not a guarantee of fit for every engine carrying the same brand, horsepower, or year range.\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 or source\u003c\/th\u003e\n          \u003cth\u003ePart number\u003c\/th\u003e\n          \u003cth\u003eRelationship\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\u003eSierra\u003c\/td\u003e\n          \u003ctd\u003e18-3214\u003c\/td\u003e\n          \u003ctd\u003eProduct catalog number\u003c\/td\u003e\n          \u003ctd\u003eListed as an impeller repair kit.\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eChrysler\/Force\u003c\/td\u003e\n          \u003ctd\u003e46-43024A7\u003c\/td\u003e\n          \u003ctd\u003eReplaced reference\u003c\/td\u003e\n          \u003ctd\u003eShown in the catalog as the replacement reference for Sierra 18-3214.\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 available catalog places Sierra 18-3214 in the Chrysler\/Force outboard cooling-system section and identifies it as an impeller repair kit. The catalog page does not provide a complete engine model, year, serial-number, or stroke list specifically tied to this kit. Do not rely on a broad horsepower range alone to confirm compatibility.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Compatibility Information\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003eApplication information\u003c\/th\u003e\n          \u003cth\u003eStroke\u003c\/th\u003e\n          \u003cth\u003eYear or serial condition\u003c\/th\u003e\n          \u003cth\u003eVerification required\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eChrysler\/Force\u003c\/td\u003e\n          \u003ctd\u003eCooling-system impeller repair-kit application\u003c\/td\u003e\n          \u003ctd\u003eNot specified in the product entry\u003c\/td\u003e\n          \u003ctd\u003eNot specified for 18-3214 in the product entry\u003c\/td\u003e\n          \u003ctd\u003eMatch the original impeller, pump components, model, year, and serial number.\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 repair kit\u003c\/dd\u003e\n    \u003cdt\u003eCatalog Number\u003c\/dt\u003e\n    \u003cdd\u003eSierra 18-3214\u003c\/dd\u003e\n    \u003cdt\u003eReplacement Reference\u003c\/dt\u003e\n    \u003cdd\u003eForce 46-43024A7\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n    \u003cdd\u003eWater pump assembly in the outboard lower unit or gearcase\u003c\/dd\u003e\n    \u003cdt\u003eEngine Stroke\u003c\/dt\u003e\n    \u003cdd\u003eNot specified in the verified product entry\u003c\/dd\u003e\n    \u003cdt\u003eHousing Included\u003c\/dt\u003e\n    \u003cdd\u003eNot identified as included; this listing should not be treated as a complete pump-housing assembly\u003c\/dd\u003e\n    \u003cdt\u003eWarranty\u003c\/dt\u003e\n    \u003cdd\u003eWarranty terms are not specified in the available product evidence.\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\n  \u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n  \u003cp\u003eThe available catalog identifies this item as an \u003cstrong\u003eimpeller repair kit\u003c\/strong\u003e but does not provide a component-by-component contents list for Sierra 18-3214. Do not assume that a pump housing, wear plate, gasket, key, or other individual component is included unless it is shown in the current package or confirmed by the seller.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x Water pump impeller repair kit\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eConfirm the original part number and engine model, year, and serial number before beginning work.\u003c\/li\u003e\n    \u003cli\u003eDisconnect the battery and place the outboard in neutral, following the engine manufacturer's service instructions.\u003c\/li\u003e\n    \u003cli\u003eRemove the lower unit or gearcase according to the manufacturer's procedure.\u003c\/li\u003e\n    \u003cli\u003eRemove the water-pump cover and inspect the impeller, wear surfaces, key, gaskets, and housing for damage or corrosion.\u003c\/li\u003e\n    \u003cli\u003eClean the mating surfaces and remove all old gasket material without damaging the sealing surfaces.\u003c\/li\u003e\n    \u003cli\u003eInstall the repair-kit components that are supplied in the package, using the manufacturer's service manual for orientation and assembly details.\u003c\/li\u003e\n    \u003cli\u003eUse the manufacturer's specified fastener sequence and torque values; do not substitute a generic torque value.\u003c\/li\u003e\n    \u003cli\u003eReinstall the lower unit, ensuring correct alignment of the driveshaft, water tube, and shift mechanism.\u003c\/li\u003e\n    \u003cli\u003eRun the engine only in an appropriate test tank or in the water and confirm a normal cooling-water tell-tale stream before regular operation.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does this product replace?\u003c\/summary\u003e\n    \u003cp\u003eThe available catalog identifies Sierra 18-3214 as replacing Force part number 46-43024A7.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a complete water-pump housing assembly?\u003c\/summary\u003e\n    \u003cp\u003eNo complete housing assembly is established by the available product evidence. The item is identified as an impeller repair kit. Confirm the package contents before installation.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill this fit every Mercury, Mariner, or Force 8–25 HP engine?\u003c\/summary\u003e\n    \u003cp\u003eNo broad 8–25 HP fitment claim is confirmed for this specific product entry. Brand and horsepower alone are insufficient; verify the exact model, year, serial number, and original pump components.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes the kit include a gasket, key, wear plate, or housing?\u003c\/summary\u003e\n    \u003cp\u003eThe available catalog entry does not itemize the contents of this kit. Do not assume that these components are included unless they are shown in the package or confirmed before purchase.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n    \u003cp\u003eThis listing represents an aftermarket replacement identified by the Sierra catalog number 18-3214. It is not presented as a genuine OEM component.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should an impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eInspect the impeller according to the engine manufacturer's maintenance schedule and whenever cooling performance is reduced. Replace it sooner if the engine has been run without adequate water flow or if the impeller shows cracking, hardening, deformation, or vane damage.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify the exact model, year, serial number, original part number, and pump configuration before ordering.\u003c\/li\u003e\n    \u003cli\u003eDo not use a horsepower-only match as confirmation of compatibility.\u003c\/li\u003e\n    \u003cli\u003eDo not operate an outboard with inadequate cooling-water flow.\u003c\/li\u003e\n    \u003cli\u003eFollow the engine manufacturer's service manual for removal, installation, clearances, and torque specifications.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended if you are not familiar with outboard lower-unit 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 servicing and maintaining marine engines.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Information\u003c\/strong\u003e — Use the exact part number and engine identification details to select the correct component.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSupport When You Need It\u003c\/strong\u003e — Contact support with your engine model, year, serial number, and original part information when fitment assistance is required.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718267375931,"sku":"Mgnv8KM006","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Mgnv8KM006.png?v=1762958590"},{"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-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":"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-15-25hp-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-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\/force-2-stroke-18hp-outboard-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}