{"title":"Mercury 8-9.9HP 2-Stroke Outboard Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"max-width:1000px;margin:0 auto;padding:16px 12px;\"\u003e\n  \u003cp\u003eThis page is for Mercury 2‑Stroke 8–9.9HP outboard engines. It helps you find compatible parts and service information, including maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Mercury 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\/mercury-outboard-parts\" style=\"display:inline-block;margin-top:8px;padding:10px 14px;background:#004080;color:#fff;text-decoration:none;border-radius:4px;\"\u003eBrowse All Mercury Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width:1000px;margin:0 auto;padding:20px 12px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 8–9.9HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eNameplate\/serial plate location: usually on the starboard side of the transom bracket (or swivel bracket under the clamp screws). Record both the model designation and the serial number.\u003c\/li\u003e\n    \u003cli\u003eReading the code and suffix: examples include 8M\/8ML and 9.9M\/9.9ML\/9.9EL. Suffix letters commonly indicate features such as L = 20\" long shaft, M = manual start tiller, E = electric start, and R = remote steering. Match these when selecting parts.\u003c\/li\u003e\n    \u003cli\u003e2‑Stroke identification: no engine oil dipstick or crankcase oil fill. Models may have an oil‑injection tank and lines or require 50:1 pre‑mix. Decals or the owner’s manual typically specify the lubrication method.\u003c\/li\u003e\n    \u003cli\u003eShaft length check: measure from the transom clamp mounting surface to the anti‑ventilation plate. Short is ~15\"; long is ~20\" on most small engines.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"max-width:1000px;margin:0 auto;padding:20px 12px;\"\u003e\n  \u003ch2\u003eEngine Overview\u003c\/h2\u003e\n  \u003ch3\u003eMercury 8–9.9HP 2‑Stroke Platform\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInline‑2, carbureted 2‑stroke with CDI ignition; manual or electric start; tiller or remote control variants.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e8M \/ 8ML, 9.9M \/ 9.9ML \/ 9.9EL (various year ranges; verify by serial).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eLight weight, simple maintenance, strong low‑speed thrust for trolling and small craft.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eMany gearcase components are shared across related small‑hp Mercury 2‑strokes of the same era. Match shaft length (15\" vs 20\"), start type, and control type for correct parts and prop selection.\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=\"max-width:1000px;margin:0 auto;padding:20px 12px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for small 2‑stroke outboards. Always follow the procedures and specifications in your official service manual.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect for water or metal; replace drain\/fill plug gaskets at service.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCheck gap\/spec; replace if fouled or worn.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\"\u003eMercury Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eFuel filter \/ in‑line strainer\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eReplace or clean; use fresh, stabilized fuel.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEvery 2–3 seasons or 100 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eReplace more frequently in sandy\/silty water or if stream is weak.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\"\u003eMercury Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAnodes (corrosion protection)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect each season; replace when ≥50% worn\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eChoose zinc (fresh), aluminum (brackish), or magnesium (fresh, low mineral) per environment.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e2‑Stroke oiling (injection or pre‑mix)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePre‑run check; seasonal inspection\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eOil‑injected: inspect tank, lines, and prime system. Pre‑mix: many small Mercurys use 50:1 TC‑W3; follow your manual.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\"\u003eMercury Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePropeller \u0026amp; hardware check\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEvery trip\/seasonally\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect for dings, fishing line at seal, and correct cotter\/nut torque.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"max-width:1000px;margin:0 auto;padding:20px 12px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service — \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System — \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\"\u003eMercury Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase \u0026amp; Seals — \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\"\u003eMercury Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropellers \u0026amp; Hubs — \u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection — \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System — \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\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  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"max-width:1000px;margin:0 auto;padding:20px 12px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWeak tell‑tale stream or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect water inlets for debris; verify impeller condition; confirm thermostat operation.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWater pump kit, thermostat, intake screens, anodes near inlets\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eUse fresh fuel; confirm correct oil mix; prime bulb; check plug condition and gap; inspect for air leaks and carb settings.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eSpark plugs, fuel filter, fuel hose\/primer bulb, carburetor kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eExcessive smoke (2‑stroke)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eVerify mix ratio or injection setting; check choke operation; ensure engine is fully warmed.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eSpark plugs, choke linkage\/solenoid parts, carburetor components\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect prop for damage or fishing line; check for slipping hub; replace fuel filter; verify compression and ignition.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePropeller\/hub kit, fuel filter, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eGearcase noise or metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eDrain and inspect oil; check for water; assess seals and bearing wear.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eLower unit seal kit, bearings, drain\/fill plug gaskets\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"max-width:1000px;margin:0 auto;padding:20px 12px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different years or nearby horsepower models?\u003c\/summary\u003e\n    \u003cp\u003eMany service items and hardware interchange across 8–9.9HP Mercury 2‑strokes, and some gearcase components overlap with related small‑hp models of the same era. Always confirm by model\/serial and match shaft length and start\/control configuration.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the water pump impeller?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule of thumb, replace the impeller every 2–3 seasons or about 100 hours—sooner if operating in sand, silt, or with a weak tell‑tale stream. Inspect the housing and key components during service.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should the lower unit gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eChange gear oil annually or every 100 hours. Look for water, metal, or burnt odor. Replace drain\/fill plug gaskets at each service to ensure a proper seal.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003ePlease provide the model designation and serial number, shaft length (15\" or 20\"), start type (manual or electric), and control type (tiller or remote). Photos of the nameplate and the part area can further speed verification.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"max-width:1000px;margin:0 auto;padding:20px 12px;\"\u003e\n  \u003cp\u003eReady to find parts for your Mercury 8–9.9HP 2‑Stroke? Browse the main Mercury collection and use the filters to narrow by horsepower, year, and model.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block;margin:8px 0 6px;padding:10px 14px;background:#004080;color:#fff;text-decoration:none;border-radius:4px;\"\u003eShop Mercury Outboard Parts\u003c\/a\u003e\n  \u003cp style=\"font-size:0.95em;color:#333;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"water-pump-impeller-kit-fits-mercury-mariner-6-15-hp-outboards-replaces-47-42038-2-47-42038q02","title":"Water Pump Impeller Kit – Fits Mercury\/Mariner 6-15 HP Outboards (Replaces 47-42038-2, 47-42038Q02)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n\t\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\t\u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller Kit – Fits Mercury\/Mariner 6-15 HP Outboards (Replaces 47-42038-2, 47-42038Q02)\u003c\/strong\u003e is a direct replacement part designed to restore your engine's cooling system. It is engineered for a broad range of models, including Mercury\/Mariner 6-15 HP 2-Stroke (Serial 0A197112 \u0026amp; Up), 8-9.9 HP 4-Stroke (2004 \u0026amp; Prior), 15 HP 4-Stroke (323cc), and Force 9.9-15 HP (1998) outboards.\u003c\/p\u003e\n\t\u003cp\u003eThis kit serves as a direct interchange for Mercury part numbers 47-42038, 47-42038-2, 47-42038Q02, 47-420381, and 47-420382, as well as common aftermarket cross-references including Sierra 18-3062, GLM 89451, and Mallory 9-45309.\u003c\/p\u003e\n\t\u003cul\u003e\n\t\t\u003cli\u003eImpeller is molded from a durable neoprene compound for reliable performance and long service life in marine environments.\u003c\/li\u003e\n\t\t\u003cli\u003eIncludes the essential gaskets and impeller key required for a complete water pump service.\u003c\/li\u003e\n\t\t\u003cli\u003eEngineered to meet or exceed original equipment specifications for fit, form, and function.\u003c\/li\u003e\n\t\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\t\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\t\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\t\u003cdiv class=\"ss-table-wrap\"\u003e\n\t\t\u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n\t\t\t\u003cthead\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003cth\u003eBrand\u003c\/th\u003e\n\t\t\t\t\t\u003cth\u003ePart Number\u003c\/th\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\u003c\/thead\u003e\n\t\t\t\u003ctbody\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038Q02\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-420381\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-420382\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eSierra\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e18-3062\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eGLM\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e89451\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMallory\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e9-45309\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMallory\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e9-45309-10\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\u003c\/tbody\u003e\n\t\t\u003c\/table\u003e\n\t\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\t\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\t\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\t\u003cp\u003eFor Mercury\/Mariner models, fitment is often defined by serial number. Please verify your engine's serial number against the ranges provided before ordering.\u003c\/p\u003e\n\t\u003cp\u003eFor Force outboards, this kit fits specific 9.9 HP and 15 HP models from the 1998 model year.\u003c\/p\u003e\n\t\u003cdiv class=\"ss-table-wrap\"\u003e\n\t\t\u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n\t\t\t\u003cthead\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003cth\u003eBrand\u003c\/th\u003e\n\t\t\t\t\t\u003cth\u003eModel\u003c\/th\u003e\n\t\t\t\t\t\u003cth\u003eRated HP\u003c\/th\u003e\n\t\t\t\t\t\u003cth\u003eStroke\u003c\/th\u003e\n\t\t\t\t\t\u003cth\u003eYears\u003c\/th\u003e\n\t\t\t\t\t\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\t\t\t\t\t\u003cth\u003eNotes\u003c\/th\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\u003c\/thead\u003e\n\t\t\t\u003ctbody\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e6 HP\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e6\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eSerial A197112 \u0026amp; Up\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e6 HP\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e6\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eSerial OT800749 \u0026amp; Up\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e8 HP\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e8\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eSerial A197112 \u0026amp; Up\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e8 HP (Bodensee)\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e8\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eSerial G760300 \u0026amp; Up\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eInternational model\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e9.9\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eSerial A197112 \u0026amp; Up\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e9.9\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e2004 \u0026amp; Prior\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eStandard case\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e9.9\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eSerial G760300-T979999\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eXR10 SeaPro\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e10\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eSerial D038000 \u0026amp; Up\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e15 HP\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e15\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eSerial B292414 \u0026amp; Up\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e15 HP\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e15\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e323cc, MY2008 \u0026amp; Prior\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e15 SeaPro\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e15\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003eSerial G044365 \u0026amp; Up\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eForce\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e9.9 HP\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e9.9\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e1998\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\t\u003ctr\u003e\n\t\t\t\t\t\u003ctd\u003eForce\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e15 HP\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e15\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e1998\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\t\t\t\t\t\u003ctd\u003e\u003c\/td\u003e\n\t\t\t\t\u003c\/tr\u003e\n\t\t\t\u003c\/tbody\u003e\n\t\t\u003c\/table\u003e\n\t\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\t\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\t\u003cdl\u003e\n\t\t\u003cdt\u003eProduct Type\u003c\/dt\u003e\n\t\t\u003cdd\u003eWater Pump Impeller Kit\u003c\/dd\u003e\n\t\t\u003cdt\u003eMaterial\u003c\/dt\u003e\n\t\t\u003cdd\u003eNeoprene\u003c\/dd\u003e\n\t\t\u003cdt\u003eDimensions\u003c\/dt\u003e\n\t\t\u003cdd\u003e58.8mm diameter × 11.7-11.9mm depth (2.315\" × 0.469\")\u003c\/dd\u003e\n\t\t\u003cdt\u003eShaft Diameter\u003c\/dt\u003e\n\t\t\u003cdd\u003e12.6-13mm (0.496-0.512\")\u003c\/dd\u003e\n\t\t\u003cdt\u003eWarranty\u003c\/dt\u003e\n\t\t\u003cdd\u003e1 Year\u003c\/dd\u003e\n\t\u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\t\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\t\u003cul\u003e\n\t\t\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Neoprene Impeller (47-42038-2)\u003c\/li\u003e\n\t\t\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Gasket (27-19202)\u003c\/li\u003e\n\t\t\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Gasket (27-19204-3)\u003c\/li\u003e\n\t\t\u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Impeller Key\u003c\/li\u003e\n\t\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\t\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\t\u003col\u003e\n\t\t\u003cli\u003eDisconnect the battery and spark plug leads for safety.\u003c\/li\u003e\n\t\t\u003cli\u003eRemove the bolts securing the lower unit (gearcase) to the engine.\u003c\/li\u003e\n\t\t\u003cli\u003eCarefully drop the lower unit to gain access to the water pump assembly.\u003c\/li\u003e\n\t\t\u003cli\u003eUnscrew the bolts on the water pump housing and remove the cover.\u003c\/li\u003e\n\t\t\u003cli\u003eTake note of the old impeller's vane direction before removing it and the woodruff key.\u003c\/li\u003e\n\t\t\u003cli\u003eInspect the pump housing and wear plate for grooves, warping, or damage. Clean all surfaces.\u003c\/li\u003e\n\t\t\u003cli\u003eInstall the new key and slide the new impeller onto the driveshaft. Turn the driveshaft clockwise to help bend the vanes into the correct orientation.\u003c\/li\u003e\n\t\t\u003cli\u003ePosition the new gaskets correctly and reinstall the water pump housing, tightening bolts to the manufacturer's specified torque.\u003c\/li\u003e\n\t\t\u003cli\u003eReattach the lower unit, ensuring the shift shaft and water tube are properly aligned.\u003c\/li\u003e\n\t\t\u003cli\u003eOnce assembled, use a water source (like flushing muffs) to run the engine and verify a strong, steady stream from the tell-tale outlet.\u003c\/li\u003e\n\t\u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\t\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\t\u003cdetails\u003e\n\t\t\u003csummary\u003eHow do I know if this impeller will fit my engine?\u003c\/summary\u003e\n\t\t\u003cp\u003eThe most accurate method is to check your engine's serial number against the compatibility chart. While this kit fits a wide range of models, serial number breaks are the definitive guide for ensuring a proper match, especially for Mercury\/Mariner engines.\u003c\/p\u003e\n\t\u003c\/details\u003e\n\t\u003cdetails\u003e\n\t\t\u003csummary\u003eWhat are the signs of a failing water pump impeller?\u003c\/summary\u003e\n\t\t\u003cp\u003eThe most common sign is a weak, intermittent, or non-existent water stream from the \"tell-tale\" cooling outlet. Other indicators include an engine overheating alarm, steam from the exhaust, or the engine itself feeling excessively hot to the touch.\u003c\/p\u003e\n\t\u003c\/details\u003e\n\t\u003cdetails\u003e\n\t\t\u003csummary\u003eHow often should I replace the impeller?\u003c\/summary\u003e\n\t\t\u003cp\u003eFor preventative maintenance, it's best practice to inspect the impeller annually and replace it every 1-2 years or 100-200 hours of operation. If you frequently operate in sandy, silty, or saltwater, more frequent replacement is recommended.\u003c\/p\u003e\n\t\u003c\/details\u003e\n\t\u003cdetails\u003e\n\t\t\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n\t\t\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n\t\u003c\/details\u003e\n\t\u003cdetails\u003e\n\t\t\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n\t\t\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n\t\u003c\/details\u003e\n\t\u003cdetails\u003e\n\t\t\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n\t\t\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n\t\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\t\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\t\u003cul\u003e\n\t\t\u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n\t\t\u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\t\t\u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\t\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\t\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\t\u003cul\u003e\n\t\t\u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n\t\t\u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n\t\t\u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\t\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717909057851,"sku":"23KM110","price":26.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_kit_for_Mercury_6_8_99_15_HP___47-42038-2____47-420381____47-42038Q02_-_JLM_MARINE-8286377.jpg?v=1763031532"},{"product_id":"water-pump-impeller-fits-tohatsu-nissan-mercury-40-90hp-2-stroke-replaces-3b7-65021-2","title":"Water Pump Impeller for Nissan\/Tohatsu 2-Stroke 60–140 HP – Replaces 3C7-65021-1 and 3B7-65022-0","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\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\u003csection\u003e\n    \u003ch2\u003eProduct Details\u003c\/h2\u003e\n    \u003cp\u003eThis aftermarket \u003cstrong\u003ewater pump impeller\u003c\/strong\u003e is designed for selected Nissan and Tohatsu marine outboards. It is a replacement cooling-system component for the applications listed below, including selected 2-stroke 60–140 HP engines and Nissan 70\/90 TLDI and 120A\/140A models.\u003c\/p\u003e\n    \u003cp\u003eThe impeller is sold as a \u003cstrong\u003esingle replacement component\u003c\/strong\u003e. It is listed as an aftermarket replacement for \u003cstrong\u003eSierra Marine 18-8924\u003c\/strong\u003e and is cross-referenced with the manufacturer part numbers shown in the matrix below.\u003c\/p\u003e\n    \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Water pump impeller for an outboard cooling system.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Selected Nissan and Tohatsu marine outboards.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eEngine range:\u003c\/strong\u003e Listed applications include 2-stroke 60\/70\/90 HP and 2-stroke 115\/120\/140 HP models.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFitment requirement:\u003c\/strong\u003e Confirm the complete engine model and original part number before ordering.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n    \u003cp\u003eUse these manufacturer and aftermarket references to compare the replacement impeller with your existing part. A part-number match should still be checked against the engine model.\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\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\u003eTohatsu\/Nissan manufacturer reference\u003c\/td\u003e\n            \u003ctd\u003e3C7-65021-1\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd\u003eTohatsu\/Nissan manufacturer reference\u003c\/td\u003e\n            \u003ctd\u003e3C7650211M\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd\u003eTohatsu\/Nissan manufacturer reference\u003c\/td\u003e\n            \u003ctd\u003e3B7-65022-0\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd\u003eTohatsu\/Nissan manufacturer reference\u003c\/td\u003e\n            \u003ctd\u003e3B7650220M\u003c\/td\u003e\n          \u003c\/tr\u003e\n          \u003ctr\u003e\n            \u003ctd\u003eAftermarket reference\u003c\/td\u003e\n            \u003ctd\u003eSierra Marine 18-8924\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 company fitment information identifies the following Nissan and Tohatsu applications. Engine model, year, and serial-number coverage can vary, so verify all identifying details 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 or Application\u003c\/th\u003e\n                    \u003cth\u003eRated HP\u003c\/th\u003e\n                    \u003cth\u003eStroke\u003c\/th\u003e\n                    \u003cth\u003eReference\u003c\/th\u003e\n                    \u003cth\u003eFitment Notes\u003c\/th\u003e\n                \u003c\/tr\u003e\n            \u003c\/thead\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eNissan\/Tohatsu\u003c\/td\u003e\n                    \u003ctd\u003e60 HP applications\u003c\/td\u003e\n                    \u003ctd\u003e60 HP\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e3C7-65021-1 \/ 3B7-65022-0\u003c\/td\u003e\n                    \u003ctd\u003eConfirm the exact engine model and original impeller number.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eNissan\/Tohatsu\u003c\/td\u003e\n                    \u003ctd\u003e70 HP applications\u003c\/td\u003e\n                    \u003ctd\u003e70 HP\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e3C7-65021-1 \/ 3B7-65022-0\u003c\/td\u003e\n                    \u003ctd\u003eConfirm the exact engine model and original impeller number.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eNissan\/Tohatsu\u003c\/td\u003e\n                    \u003ctd\u003e90 HP applications\u003c\/td\u003e\n                    \u003ctd\u003e90 HP\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e3C7-65021-1 \/ 3B7-65022-0\u003c\/td\u003e\n                    \u003ctd\u003eIncludes selected Nissan\/Tohatsu 90 TLDI applications; verify model details.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eNissan\/Tohatsu\u003c\/td\u003e\n                    \u003ctd\u003e115 HP applications\u003c\/td\u003e\n                    \u003ctd\u003e115 HP\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e3C7-65021-1 \/ 3B7-65022-0\u003c\/td\u003e\n                    \u003ctd\u003eConfirm the exact engine model and original impeller number.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eNissan\/Tohatsu\u003c\/td\u003e\n                    \u003ctd\u003e120A applications\u003c\/td\u003e\n                    \u003ctd\u003e120 HP\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e3C7-65021-1 \/ 3B7-65022-0\u003c\/td\u003e\n                    \u003ctd\u003eListed by the company as a Nissan application; verify the complete model designation.\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eNissan\/Tohatsu\u003c\/td\u003e\n                    \u003ctd\u003e140A applications\u003c\/td\u003e\n                    \u003ctd\u003e140 HP\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e3C7-65021-1 \/ 3B7-65022-0\u003c\/td\u003e\n                    \u003ctd\u003eListed by the company as a Nissan application; verify the complete model designation.\u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n    \u003cdl\u003e\n        \u003cdt\u003eProduct Type\u003c\/dt\u003e\n        \u003cdd\u003eWater pump impeller\u003c\/dd\u003e\n        \u003cdt\u003eApplication\u003c\/dt\u003e\n        \u003cdd\u003eSelected Nissan and Tohatsu marine outboards\u003c\/dd\u003e\n        \u003cdt\u003eStroke Applications\u003c\/dt\u003e\n        \u003cdd\u003e2-stroke applications listed by the company\u003c\/dd\u003e\n        \u003cdt\u003eHorsepower Range\u003c\/dt\u003e\n        \u003cdd\u003e60–140 HP, subject to the specific model and application\u003c\/dd\u003e\n        \u003cdt\u003eAftermarket Reference\u003c\/dt\u003e\n        \u003cdd\u003eSierra Marine 18-8924\u003c\/dd\u003e\n        \u003cdt\u003eManufacturer References\u003c\/dt\u003e\n        \u003cdd\u003e3C7-65021-1, 3C7650211M, 3B7-65022-0, 3B7650220M\u003c\/dd\u003e\n    \u003c\/dl\u003e\n\n    \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003e1 × Water pump impeller\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n    \u003col\u003e\n        \u003cli\u003eDisconnect the battery and follow the engine manufacturer’s safety procedures before beginning work.\u003c\/li\u003e\n        \u003cli\u003eRemove the lower unit or gearcase according to the service manual for your specific engine.\u003c\/li\u003e\n        \u003cli\u003eRemove the water pump housing and take out the old impeller.\u003c\/li\u003e\n        \u003cli\u003eInspect the pump housing, wear plate, seals, and related components for wear or damage.\u003c\/li\u003e\n        \u003cli\u003eClean the pump housing and mating surfaces before installing the replacement impeller.\u003c\/li\u003e\n        \u003cli\u003eInstall the impeller in the correct orientation for the engine’s normal rotation.\u003c\/li\u003e\n        \u003cli\u003eReassemble the water pump and lower unit using the service manual’s gasket, seal, and torque procedures.\u003c\/li\u003e\n        \u003cli\u003eRestore the shift linkage and battery connections, then run the engine with an appropriate water supply.\u003c\/li\u003e\n        \u003cli\u003eConfirm that cooling-water circulation and the telltale stream are functioning normally before use.\u003c\/li\u003e\n    \u003c\/ol\u003e\n\n    \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n    \u003cdetails\u003e\n        \u003csummary\u003eHow do I know if this impeller fits my engine?\u003c\/summary\u003e\n        \u003cp\u003eCompare your complete engine model and original impeller number with the Engine \u0026amp; Model Compatibility and Part Number Matrix sections. This listing is intended for selected Nissan and Tohatsu applications, including the 2-stroke 60\/70\/90 HP and 115\/120\/140 HP applications identified above.\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 warning signs can include overheating, a weak or missing telltale stream, or reduced cooling-water circulation. Inspect the impeller and the complete water pump assembly if any of these symptoms occur.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n        \u003csummary\u003eDoes this listing include a complete water pump kit?\u003c\/summary\u003e\n        \u003cp\u003eNo. This listing is for one water pump impeller only. Gaskets, keys, wear plates, housings, and other water-pump components are not included unless specifically stated.\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 impeller. The listed manufacturer and aftermarket numbers are provided for compatibility cross-reference only.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n        \u003csummary\u003eShould I verify the part before installation?\u003c\/summary\u003e\n        \u003cp\u003eYes. Compare the replacement with the original part and verify the engine model, horsepower, stroke, and applicable part number before installation. Do not install the impeller if the dimensions, hub, or other identifying features do not match.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003eVerify the complete engine model and original part number before ordering.\u003c\/li\u003e\n        \u003cli\u003eFitment references are application-specific and should not be extended to unlisted engine models.\u003c\/li\u003e\n        \u003cli\u003eThis is an aftermarket replacement component, not an original equipment manufacturer part.\u003c\/li\u003e\n        \u003cli\u003eProfessional installation is recommended when lower-unit removal or water-pump service is outside your experience.\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 supply replacement components for routine marine maintenance and repair.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Fitment\u003c\/strong\u003e — Product references are provided to help customers compare engine models and original part numbers.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003ePractical Value\u003c\/strong\u003e — Aftermarket replacement parts offer a practical option for maintaining compatible marine engines.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718264394043,"sku":"17IT005","price":17.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_for_Tohatsu_-_Mercury_3B7-65021-2_3B7650210M_3B7650212M_3C7-65021-1_-_JLM_MARINE-8289714.jpg?v=1762958470"},{"product_id":"water-pump-impeller-kit-fits-mercury-mariner-6-15-hp-replaces-47-42038q02-18-3062","title":"Water Pump Impeller with Key – Fits Mercury\/Mariner 6–15 HP 2-Stroke and Select 4-Stroke Models (Replaces 47-42038Q02, Sierra 18-3062)","description":"\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\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\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003ewater pump impeller with drive key\u003c\/strong\u003e is designed for selected Mercury and Mariner outboards. The product is supplied as a single impeller-and-key replacement, not as a complete water-pump gasket kit. Company fitment information covers 2-stroke engines from 6 to 15 HP and selected 4-stroke models including 8 HP, 9.9 HP with 323cc displacement, 13.5 HP international models, and 15 HP models.\u003c\/p\u003e\n\u003cp\u003eThe impeller is listed as an aftermarket replacement for Mercury references \u003cstrong\u003e47-42038\u003c\/strong\u003e, \u003cstrong\u003e47-42038-2\u003c\/strong\u003e, \u003cstrong\u003e47-42038Q02\u003c\/strong\u003e, \u003cstrong\u003e47-42038-1\u003c\/strong\u003e, and \u003cstrong\u003e47-420382\u003c\/strong\u003e. Sierra \u003cstrong\u003e18-3062\u003c\/strong\u003e is a corresponding aftermarket reference.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-volume, long-vane water pump impeller design for the specified applications.\u003c\/li\u003e\n\u003cli\u003eIncludes the matching drive key for installation with the impeller.\u003c\/li\u003e\n\u003cli\u003eSuitable for routine water-pump service when the engine model and serial number match the applicable application information.\u003c\/li\u003e\n\u003cli\u003eAftermarket replacement; Mercury and Mariner are manufacturer trademarks used only to identify compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these references to compare the replacement impeller with the part being removed. Part-number references do not replace model, stroke, and serial-number verification.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n\u003cth\u003eBrand or Source\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eReference Type\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-42038\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-42038-2\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-42038Q02\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-42038-1\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e47-420382\u003c\/td\u003e\n\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3062\u003c\/td\u003e\n\u003ctd\u003eAftermarket reference\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eFitment depends on the complete engine application. Before ordering, compare the engine brand, model, horsepower, stroke, displacement where applicable, and serial number with your service information and the original impeller.\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\u003eApplication\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eAdditional Conditions\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eSelected outboard models\u003c\/td\u003e\n        \u003ctd\u003e6–15\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003eVerify the exact model and serial number before installation.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eSelected 8 HP models\u003c\/td\u003e\n        \u003ctd\u003e8\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eIncludes the company-listed Bodensee\/international application; verify the exact engine identification.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eSelected 9.9 HP models\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e323cc application listed by the company; verify model and serial number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eSelected international models\u003c\/td\u003e\n        \u003ctd\u003e13.5\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eInternational application listed by the company; verify the exact engine identification.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eSelected 15 HP models\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eVerify the exact model and serial number before ordering.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The 2-stroke and 4-stroke applications are not interchangeable solely because the horsepower is similar. Do not use this part unless the engine application and original impeller reference match.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n \u003cdt\u003eProduct Type\u003c\/dt\u003e\n \u003cdd\u003eWater pump impeller with drive key\u003c\/dd\u003e\n \u003cdt\u003eVane Design\u003c\/dt\u003e\n \u003cdd\u003eHigh-volume, long-vane impeller\u003c\/dd\u003e\n \u003cdt\u003eApproximate Outside Diameter\u003c\/dt\u003e\n \u003cdd\u003e2.3125 in (58.74 mm)\u003c\/dd\u003e\n \u003cdt\u003eApproximate Inside Diameter\u003c\/dt\u003e\n \u003cdd\u003e0.500 in (12.70 mm)\u003c\/dd\u003e\n \u003cdt\u003eInstallation\u003c\/dt\u003e\n \u003cdd\u003eDirect replacement for compatible applications; follow the engine service manual.\u003c\/dd\u003e\n \u003cdt\u003eBrand Status\u003c\/dt\u003e\n \u003cdd\u003eAftermarket replacement, not an OEM component.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Water pump impeller\u003c\/li\u003e\n  \u003cli\u003e1 x Matching impeller drive key\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGaskets are not included.\u003c\/strong\u003e Inspect the water-pump housing, plate, and existing gaskets during service and purchase any required replacement gaskets separately for your specific engine.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eFollow the engine manufacturer’s service manual for the correct procedure, torque values, sealing requirements, and model-specific precautions. General service steps are:\u003c\/p\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and place the outboard in neutral.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit according to the service manual.\u003c\/li\u003e\n  \u003cli\u003eRemove the water-pump housing and take out the old impeller and key.\u003c\/li\u003e\n  \u003cli\u003eClean the housing, plate, and shaft area. Remove debris and inspect the housing and wear surfaces for damage.\u003c\/li\u003e\n  \u003cli\u003eInstall the supplied drive key and impeller in the same orientation as the original part.\u003c\/li\u003e\n  \u003cli\u003eInstall the water-pump housing, guiding the impeller vanes in the correct direction of rotation. Replace damaged or unsuitable gaskets separately.\u003c\/li\u003e\n  \u003cli\u003eReinstall the lower unit and confirm that the driveshaft, shift shaft, and water tube are correctly aligned.\u003c\/li\u003e\n  \u003cli\u003eRun the engine in water or with the correct flushing equipment and confirm a steady cooling-water discharge before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm that this impeller fits my engine?\u003c\/summary\u003e\n  \u003cp\u003eCompare your engine brand, model, horsepower, stroke, displacement where applicable, and serial number with the application information. Also compare the original impeller’s dimensions and part-number reference. Horsepower alone is not sufficient to confirm fitment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\n  \u003cp\u003eCommon signs include a weak or irregular tell-tale stream, overheating warnings, elevated operating temperature, or reduced cooling-water discharge. Vanes may become brittle, damaged, or permanently deformed with use.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this product include a gasket kit?\u003c\/summary\u003e\n  \u003cp\u003eNo. This product includes one water-pump impeller and one matching drive key. Gaskets are not included and must be sourced separately if required for your engine.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM Mercury or Mariner part?\u003c\/summary\u003e\n  \u003cp\u003eNo. This is an aftermarket replacement that references Mercury and Mariner applications and part numbers for compatibility identification.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should an impeller be replaced?\u003c\/summary\u003e\n  \u003cp\u003eReplacement timing depends on the engine manufacturer’s maintenance schedule, operating hours, storage conditions, and water quality. Inspect the impeller regularly and replace it whenever the vanes show cracking, wear, deformation, or damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I use it on any 6–15 HP outboard?\u003c\/summary\u003e\n  \u003cp\u003eNo. The listed 6–15 HP range applies to selected Mercury and Mariner applications, primarily the company-listed 2-stroke range. Selected 4-stroke applications are also listed separately. Confirm the exact model and serial number before purchase.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the application and original part before ordering; similar horsepower ratings do not guarantee interchangeability.\u003c\/li\u003e\n  \u003cli\u003eDo not operate an outboard without an adequate cooling-water supply.\u003c\/li\u003e\n  \u003cli\u003eStop the engine immediately if the tell-tale stream is weak or the engine overheats.\u003c\/li\u003e\n  \u003cli\u003eUse the service manual for installation procedure and torque specifications. Professional installation is recommended when servicing the lower unit or water pump.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMarine replacement parts selected for practical service and routine maintenance applications.\u003c\/li\u003e\n  \u003cli\u003eClear compatibility information to help match the part to the correct engine application.\u003c\/li\u003e\n  \u003cli\u003eAftermarket value for watercraft owners and marine technicians.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723776102715,"sku":"17IM009-K","price":18.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Mercury-_Mariner_Impeller_6_to_15_HP_2-Stroke_-_4-Stroke_47-42038_2_-_JLM_MARINE-8289804.jpg?v=1763031531"},{"product_id":"water-pump-impeller-kit-fits-yamaha-9-9-15-hp-outboard-replaces-682-w0078-a1-00","title":"Water Pump Impeller Repair Kit for Yamaha 9.9\/15 HP Outboards – Replaces 682-W0078-A1-00","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 {\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 aftermarket water pump impeller repair kit is intended for selected Yamaha 9.9 HP and 15 HP outboard applications using the Yamaha reference \u003cstrong\u003e682-W0078-A1-00\u003c\/strong\u003e. Cataloged applications include specific Yamaha 9.9 and 15 HP models, including selected 1984–1985 2-stroke models and selected T9.9 applications. Always verify the complete model code, year, stroke, and serial-number range before ordering.\u003c\/p\u003e\n\u003cp\u003eThe part reference is associated with Yamaha water-pump repair-kit applications. It is an aftermarket replacement and is not manufactured by Yamaha. The kit is supplied for water-pump service; it does not include a complete lower unit or an assembled water-pump system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReplacement water-pump service component for compatible Yamaha outboards.\u003c\/li\u003e\n\u003cli\u003eDesigned to restore water-pump impeller service during routine cooling-system maintenance.\u003c\/li\u003e\n\u003cli\u003eUse the exact engine model and year to confirm fitment; horsepower alone is not sufficient.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number References\u003c\/h2\u003e\n\u003cp\u003eThe following manufacturer reference is used to identify the compatible water-pump repair-kit application.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number References\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eReference Number\u003c\/th\u003e\n\u003cth\u003eReference Type\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e682-W0078-A1-00\u003c\/td\u003e\n        \u003ctd\u003eManufacturer reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e682-W0078-01-00\u003c\/td\u003e\n        \u003ctd\u003eRelated water-pump repair-kit reference; verify against the engine model\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\u003eFitment depends on the complete model designation and production year. The catalog evidence identifies the following application families for this reference. This is not a universal fit for every Yamaha 9.9 or 15 HP outboard.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel or Application\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eDocumented Year or Range\u003c\/th\u003e\n        \u003cth\u003eReference\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e15ELN, 15ESK, 15ESN, 15LK, 15LN, 15SK, 15SN\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984–1985 catalog applications\u003c\/td\u003e\n        \u003ctd\u003e682-W0078-01-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e9.9ELK, 9.9ELN, 9.9ESK, 9.9ESN, 9.9LK, 9.9LN, 9.9SK, 9.9SN\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984 catalog applications\u003c\/td\u003e\n        \u003ctd\u003e682-W0078-01-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eT9.9ELHU, T9.9ELRU, T9.9EXHU, T9.9MLHU, T9.9MXHU\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1996\u003c\/td\u003e\n        \u003ctd\u003e682-W0078-A1-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eAdditional related references appear in parts databases for later 9.9 HP applications, including some 4-stroke and 2-stroke models. Because those records distinguish between different suffixes and component relationships, do not assume this A1 application fits an A2- or A3-designated engine without matching the original part number and model information.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket water pump impeller repair kit\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSelected Yamaha 9.9 HP and 15 HP outboard water-pump systems\u003c\/dd\u003e\n  \u003cdt\u003eManufacturer Reference\u003c\/dt\u003e\n  \u003cdd\u003e682-W0078-A1-00\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eReplacement service part; installation requires access to the water-pump assembly\u003c\/dd\u003e\n  \u003cdt\u003eHousing Included\u003c\/dt\u003e\n  \u003cdd\u003eNot confirmed as included; verify the package contents before ordering\u003c\/dd\u003e\n  \u003cdt\u003eOEM Status\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement, not a genuine Yamaha part\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eWater-pump impeller repair component(s) for the listed application\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePackage contents such as the impeller key, gaskets, wear plate, cup, seals, bolts, or pump housing are not individually confirmed for this listing. Do not assume that a complete water-pump housing or every service component is included.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eConfirm the engine model, year, stroke, and original water-pump reference before beginning service.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery where applicable, remove the lanyard, and follow the engine manufacturer's safety procedures.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit according to the service-manual procedure for the specific outboard.\u003c\/li\u003e\n  \u003cli\u003eRemove the water-pump cover and inspect the impeller, key, cup, wear plate, seals, and housing for damage or debris.\u003c\/li\u003e\n  \u003cli\u003eReplace damaged related components as required. Install the impeller with the correct key and vane orientation for the engine.\u003c\/li\u003e\n  \u003cli\u003eReassemble the water-pump cover and lower unit, ensuring that the water tube and driveshaft are correctly aligned.\u003c\/li\u003e\n  \u003cli\u003eTest the engine in an appropriate water supply and confirm a steady cooling-water tell-tale stream before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm this part fits my engine?\u003c\/summary\u003e\u003cp\u003eCompare the complete model code, production year, stroke type, and original water-pump reference with the compatibility information above. Yamaha 9.9 and 15 HP engines use more than one impeller and repair-kit design, so horsepower alone is not enough.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this fit all Yamaha 9.9 and 15 HP outboards?\u003c\/summary\u003e\u003cp\u003eNo. It is intended for selected applications associated with the 682-W0078-A1-00 or related 682-W0078-01-00 reference. Check the exact model and year before purchasing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a genuine Yamaha part?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement intended to match the listed water-pump service application.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the package include the pump housing?\u003c\/summary\u003e\u003cp\u003eA complete pump housing is not confirmed as included. Review the package contents and compare the required service parts with the components in your existing water-pump assembly.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the symptoms of a worn impeller?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include a weak or missing tell-tale stream, overheating warnings, elevated operating temperature, steam, or reduced cooling-water flow. Stop the engine if overheating occurs.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should an outboard impeller be inspected?\u003c\/summary\u003e\u003cp\u003eInspect the impeller according to the engine manufacturer's maintenance schedule. More frequent service may be needed after operation in saltwater, sand, silt, or debris.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the complete engine model and original part reference before ordering.\u003c\/li\u003e\n  \u003cli\u003eDo not operate an outboard with a weak or absent cooling-water stream.\u003c\/li\u003e\n  \u003cli\u003eUse a service manual or qualified marine technician for lower-unit and water-pump service.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement and is not affiliated with or endorsed by Yamaha.\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 boat and outboard maintenance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product information is organized around model and part-number verification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupport for Maintenance Work\u003c\/strong\u003e — Confirm fitment and required service components before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723985948987,"sku":"SIE-22KY001","price":38.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/SIE-22KY001_1_ff77d391-fb75-4b00-83a9-c8e618ea33e9.jpg?v=1763039464"}],"url":"https:\/\/seasierra.com\/collections\/mercury-8-9-9hp-2-stroke-outboard-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}