{"title":"Yamaha 4-Stroke 8-9.9HP Outboard Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px 0;max-width:980px;margin:0 auto;\"\u003e\n  \u003cp\u003eThis page is dedicated to Yamaha 4-Stroke 8–9.9HP outboard engines and helps you find compatible parts and practical service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse our main Yamaha collection any time. Scroll down to begin, and remember that on the collection page you can use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category\/section.\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha\" style=\"display:inline-block;padding:10px 16px;background:#0a4a82;color:#fff;text-decoration:none;border-radius:6px;\"\u003eBrowse All Yamaha Parts\u003c\/a\u003e\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width:980px;margin:24px auto;\"\u003e\n  \u003ch2\u003eHow to Identify Your 8–9.9HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the nameplate\/serial sticker on the transom bracket (often on the port side). Record the full model code and serial number.\u003c\/li\u003e\n    \u003cli\u003eRead the model code: “F9.9” denotes a 4‑stroke 9.9HP; suffix letters\/numbers indicate features such as shaft length (S\/L\/XL), tiller vs. remote control, and starting system. A trailing year\/series code may identify generation.\u003c\/li\u003e\n    \u003cli\u003ePlatform tip: standard 8–9.9HP units are compact twin‑cylinder 4‑stroke models; High‑Thrust versions typically show a “T\/FT” designation and run a larger gearcase with a big‑diameter prop.\u003c\/li\u003e\n    \u003cli\u003e4‑Stroke quick check: verify the engine oil dipstick and spin‑on oil filter location; confirm whether your model is carbureted or late‑series with updated fuel\/ignition components.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"max-width:980px;margin:24px auto;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n\n  \u003ch3\u003ePortable 8–9.9HP (Standard)\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;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eTwin‑cylinder, carbureted 4‑stroke portable outboards\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eF8A\/B, F9.9A\/B, later series such as F9.9F\/H (naming varies by market \u0026amp; year)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eLightweight, quiet running, economical at trolling and cruise speeds\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eService parts (impeller, anodes, plugs, filters) are model‑year specific; confirm with the full model\/serial code before ordering.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eHigh‑Thrust 8–9.9HP (T\/FT Series)\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;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eTwin‑cylinder 4‑stroke with larger gearcase and low gear ratio for thrust\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eFT8D, FT9.9G and other T\/FT variants (market dependent)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eExcellent low‑speed control and push for heavy hulls, sailboats, or kicker duty\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eSome parts differ from standard models (prop, gearcase components, anodes). Verify by model code 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=\"max-width:980px;margin:24px auto;\"\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 official Yamaha service schedule for your exact model and operating conditions.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eWarm engine before draining; replace crush washer if applicable\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/oil-filters\"\u003eOil Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eInspect for water (milky oil) and metal flakes; renew seals if contamination is found\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-lower-unit-seal-kits\"\u003eYamaha Lower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eInspect every 100 hours; replace 200 hours or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eCheck gap and color; replace if fouled or worn\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 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:8px 0;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eDrain\/replace more often with ethanol fuel or dirty tanks\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\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 0;\"\u003eWater pump impeller\/kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eEvery 2–3 seasons or 200 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eReplace sooner if weak tell‑tale, overheat alarms, or sand use\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-water-pump-repair-kits\"\u003eYamaha Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eAnodes (internal \u0026amp; external)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eInspect every 50 hours; replace when 50% depleted\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eMatch alloy to water type (salt, brackish, fresh)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-anodes\"\u003eYamaha Anodes\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:980px;margin:24px auto;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service — \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-service-maintenance-kits\"\u003eYamaha Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System — \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-water-pump-repair-kits\"\u003eYamaha Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System — \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\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\u003ePropulsion — \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-propellers\"\u003eYamaha Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection — \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-anodes\"\u003eYamaha Anodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase Seals — \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-lower-unit-seal-kits\"\u003eYamaha Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"max-width:980px;margin:24px auto;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eWeak tell‑tale or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eInspect intake screens for debris; verify impeller condition; check thermostat\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eWater pump kit, intake screen, thermostat\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eExamine prop for dings and spun hub; replace fuel filter; inspect\/replace spark plugs; confirm clean fuel\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003ePropeller, fuel filter, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003ePrime fuel, drain stale fuel, clean carburetor circuits, check plug gap\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eCarburetor service components, spark plugs, fuel filter\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eGearcase noise or metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eVerify correct gear oil level; look for water intrusion; pressure\/vacuum test seals\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eLower unit seal kit, bearings, gear oil\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eVibration at mid‑throttle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003eCheck prop balance and hub; inspect engine mounts and anti‑vibration bushings\u003c\/td\u003e\n        \u003ctd style=\"padding:8px 0;\"\u003ePropeller, bushings\/mounts\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:980px;margin:24px auto;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eSome service parts overlap across 8–9.9HP Yamaha models, but many items vary by generation, shaft length, and whether the engine is a standard or High‑Thrust variant. Always confirm with the full model code and serial number.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the impeller?\u003c\/summary\u003e\n    \u003cp\u003eReplace the impeller every 2–3 seasons (about 200 hours) under normal use, or sooner if you see a weak tell‑tale, run in sandy\/silty water, or the engine has overheated.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change gear oil?\u003c\/summary\u003e\n    \u003cp\u003eInspect and change lower‑unit gear oil every 100 hours or annually. If the oil appears milky or metallic, service seals and inspect internal components before further use.\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 complete Yamaha model code, serial number, shaft length, control type (tiller\/remote), and any visible part numbers. Photos of the nameplate and the part to be replaced can also help verify fitment.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"max-width:980px;margin:24px auto;\"\u003e\n  \u003cp\u003eReady to find parts for your Yamaha 4‑Stroke 8–9.9HP? Browse the main Yamaha collection and refine by horsepower, year, and model.\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha\" style=\"display:inline-block;padding:10px 16px;background:#0a4a82;color:#fff;text-decoration:none;border-radius:6px;\"\u003eShop Yamaha Parts\u003c\/a\u003e\n  \u003c\/p\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-repair-kit-fits-yamaha-9-9-25hp-outboards-replaces-61n-w0078-01-00","title":"Water Pump Repair Kit for Yamaha F25 and C30 Outboards – Replaces 61N-W0078-01","description":"\u003csection\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003ewater pump repair kit\u003c\/strong\u003e is designed to service the cooling-water pump in selected Yamaha outboards. The kit is installed in the lower unit and includes the pump housing, cartridge components, impeller, seal damper, outer plate, fasteners, washer, O-ring, and Woodruff key listed below.\u003c\/p\u003e\n\u003cp\u003eThe primary Yamaha reference associated with this replacement is \u003cstrong\u003e61N-W0078-01\u003c\/strong\u003e. Related Yamaha and aftermarket reference numbers are provided for comparison only; always confirm the complete engine model, year, shaft configuration, and existing pump parts before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete water pump service kit for selected Yamaha outboards.\u003c\/li\u003e\n  \u003cli\u003eInstalls in the lower unit of the outboard motor.\u003c\/li\u003e\n  \u003cli\u003eIncludes a neoprene impeller and replacement pump hardware.\u003c\/li\u003e\n  \u003cli\u003eAftermarket replacement; not manufactured by Yamaha.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number References\u003c\/h2\u003e\n\u003cp\u003eThe following numbers are associated with this product or its documented water-pump repair-kit applications. A reference number alone does not confirm fitment for every engine model.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number References\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eReference Type\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-01\u003c\/td\u003e\n\u003ctd\u003ePrimary replacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-10-00\u003c\/td\u003e\n\u003ctd\u003eWater pump repair-kit catalog reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-11-00\u003c\/td\u003e\n\u003ctd\u003eWater pump repair-kit catalog reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-13-00\u003c\/td\u003e\n\u003ctd\u003eWater pump repair-kit catalog reference for selected later F25 applications\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e69P-W0078-00\u003c\/td\u003e\n\u003ctd\u003eAssociated aftermarket mapping\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e69P-W0078-01\u003c\/td\u003e\n\u003ctd\u003eAssociated aftermarket mapping\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e69P-W0078-02\u003c\/td\u003e\n\u003ctd\u003eAssociated aftermarket mapping\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3432\u003c\/td\u003e\n\u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eCatalog records specifically identify water pump repair-kit applications for the Yamaha models and years shown below. Model suffixes, shaft lengths, and production changes can affect fitment, so match the complete model designation before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine Compatibility\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eDocumented Reference\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC30ELRR\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1993\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-10-00\u003c\/td\u003e\n\u003ctd\u003eRepair Kit 2 catalog occurrence\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC30ELRS\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-10-00\u003c\/td\u003e\n\u003ctd\u003eRepair Kit 2 catalog occurrence\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC30MLHS\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1994\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-10-00\u003c\/td\u003e\n\u003ctd\u003eRepair Kit 2 catalog occurrence\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eC30ELRT\u003c\/td\u003e\n\u003ctd\u003e30\u003c\/td\u003e\n\u003ctd\u003e2-Stroke\u003c\/td\u003e\n\u003ctd\u003e1995\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-10-00\u003c\/td\u003e\n\u003ctd\u003eRepair Kit 2 catalog occurrence\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF25ELHW, F25ELRW, F25ESHW, F25TLRW\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1998\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-11-00\u003c\/td\u003e\n\u003ctd\u003eRepair Kit 3 catalog occurrences\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF25ELHX, F25ELRX, F25ESHX, F25MLHX, F25MSHX, F25TLRX\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1999\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-11-00\u003c\/td\u003e\n\u003ctd\u003eRepair Kit 3 catalog occurrences\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF25ELHY, F25ELRY, F25ESHY, F25MLHY, F25MSHY, F25TLRY\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2000\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-11-00\u003c\/td\u003e\n\u003ctd\u003eRepair Kit 3 catalog occurrences\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF25ELHZ, F25ELRZ, F25ESHZ, F25ESRZ\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2001\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-11-00\u003c\/td\u003e\n\u003ctd\u003eRepair Kit 3 catalog occurrences\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF25LA\u003c\/td\u003e\n\u003ctd\u003e25\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2019\u003c\/td\u003e\n\u003ctd\u003e61N-W0078-13-00\u003c\/td\u003e\n\u003ctd\u003eRepair-kit and scheduled-service catalog occurrence\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e The table lists documented catalog applications, not a guarantee that every engine in a model family uses the same pump assembly. Do not rely on horsepower alone. Verify the full model code, year, shaft configuration, and the reference number on the original water-pump assembly.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater pump repair kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation Location\u003c\/dt\u003e\n\u003cdd\u003eOutboard lower unit\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003ePlastic housing with stainless-steel pump components as supplied\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n  \u003cdt\u003eProduct Classification\u003c\/dt\u003e\n\u003cdd\u003eAftermarket replacement\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 housing, 61N-44311-01-00\u003c\/li\u003e\n  \u003cli\u003e1 x Cartridge insert, 61N-44322-00-00\u003c\/li\u003e\n  \u003cli\u003e1 x Impeller, 6H4-44352-02-00\u003c\/li\u003e\n  \u003cli\u003e1 x Water seal damper, 61N-44323-00-00\u003c\/li\u003e\n  \u003cli\u003e1 x Cartridge outer plate, 6L2-44367-00-00\u003c\/li\u003e\n  \u003cli\u003e4 x Plain washer, 92990-06600-00\u003c\/li\u003e\n  \u003cli\u003e1 x Woodruff key, 90280-03024-00\u003c\/li\u003e\n  \u003cli\u003e1 x O-ring, 93210-45161-00\u003c\/li\u003e\n  \u003cli\u003e4 x Bolt, 97095-06040-00\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and remove the ignition key. Follow the engine manufacturer's service procedures.\u003c\/li\u003e\n  \u003cli\u003eSupport the outboard securely and remove the gearcase according to the appropriate service manual.\u003c\/li\u003e\n  \u003cli\u003eRemove the water-pump fasteners and lift the old pump housing from the gearcase.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller, key, plate, seals, and related pump components. Clean the mating surfaces and driveshaft area.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement key, plate, seals, impeller, and housing in the same order as the original assembly.\u003c\/li\u003e\n  \u003cli\u003eWhen fitting the impeller into the housing, rotate the driveshaft in the correct direction specified by the service manual.\u003c\/li\u003e\n  \u003cli\u003eInstall and tighten the fasteners to the manufacturer's torque specifications.\u003c\/li\u003e\n  \u003cli\u003eReinstall the gearcase and complete any required gear-oil service.\u003c\/li\u003e\n  \u003cli\u003eStart the engine only with an adequate water supply and confirm cooling-water flow from the tell-tale outlet.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm fitment?\u003c\/summary\u003e\n  \u003cp\u003eCompare the complete Yamaha model code and year with the compatibility table, then compare the original pump assembly and reference number. Model family, shaft length, production year, and serial-number changes may affect fitment.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are signs of a worn water-pump impeller?\u003c\/summary\u003e\n  \u003cp\u003eTypical signs include weak or absent tell-tale water flow, overheating, an overheat warning, or visible damage to the impeller. Stop operating the engine if cooling flow is inadequate.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\n  \u003cp\u003eInspect the impeller during routine maintenance and replace it when it is damaged, deformed, cracked, hardened, or no longer provides proper cooling flow. Service intervals depend on the engine manufacturer and operating conditions, especially saltwater, sand, and silt exposure.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM Yamaha part?\u003c\/summary\u003e\n  \u003cp\u003eNo. This is an aftermarket replacement repair kit intended for the documented applications and reference numbers shown on this page.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this kit fit every Yamaha 9.9–30 HP outboard?\u003c\/summary\u003e\n  \u003cp\u003eNo. Horsepower alone is not sufficient to confirm fitment. Use the complete model designation, year, shaft configuration, and original pump-part reference when checking compatibility.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eRead the applicable service manual before removing the gearcase or servicing the water pump.\u003c\/li\u003e\n  \u003cli\u003eUse the correct torque values, sealants, lubricants, and installation procedures for your engine.\u003c\/li\u003e\n  \u003cli\u003eNever operate the outboard without a reliable water supply.\u003c\/li\u003e\n  \u003cli\u003eVerify the complete engine model and original part before purchase; do not rely on horsepower alone.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when the required service procedures are unfamiliar.\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 — Replacement components for routine outboard maintenance and repair.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Information\u003c\/strong\u003e — Product references and documented applications are provided to help customers verify fitment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAftermarket Value\u003c\/strong\u003e — Practical replacement solutions for marine service work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723800023355,"sku":"23KY083","price":21.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Yamaha_99-25HP_61N-W0078-01_-_JLM_MARINE-8289035.jpg?v=1763032127"},{"product_id":"engine-timing-belt-fits-yamaha-f9-9-ft9-9-t9-9-outboards-replaces-6g8-46241-00-00-18-15133","title":"Yamaha Outboard Oil Pump Drive Belt – Fits F9.9, FT9.9 and T9.9 (Replaces 6G8-46241-00-00, Sierra 18-15133)","description":"\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis aftermarket \u003cstrong\u003eoil pump drive belt\u003c\/strong\u003e is designed for select Yamaha 4-stroke outboard applications. It drives the engine oil pump and helps maintain proper oil circulation for reliable lubrication. This is a single replacement belt, not a kit.\u003c\/p\u003e\n  \u003cp\u003eThe belt replaces Yamaha reference number \u003cstrong\u003e6G8-46241-00-00\u003c\/strong\u003e and Sierra aftermarket reference \u003cstrong\u003e18-15133\u003c\/strong\u003e. Confirm the engine model, year and existing belt reference before ordering.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Marine V-belt for the engine oil-pump drive\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Yamaha 4-stroke F9.9, FT9.9 and T9.9 applications listed below\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e One replacement belt\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e The company maintenance guidance recommends replacement every 5 years or 100 hours of use, whichever comes first. Inspect the belt regularly and replace it sooner if wear or damage is found.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eThese are the documented reference numbers for this replacement belt.\u003c\/p\u003e\n  \u003cstyle\u003e\n    .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n    table.ss-table { width:100%; border-collapse:collapse; min-width:320px; }\n    table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n    table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n    @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n  \u003c\/style\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eReference type\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6G8-46241-00-00\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\u003e18-15133\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\u003csection\u003e\n  \u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n  \u003cp\u003eThe company fitment record specifies the following Yamaha 4-stroke outboard model families and year ranges:\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Engine Compatibility\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel family\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1985–2005\u003c\/td\u003e\n\u003ctd\u003eOil pump drive belt\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eFT9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1985–1990\u003c\/td\u003e\n\u003ctd\u003eOil pump drive belt\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eT9.9\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1991–2005\u003c\/td\u003e\n\u003ctd\u003eOil pump drive belt\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 Model-family fitment is not a substitute for checking the exact engine model code, serial information and existing belt reference. Do not use this belt for later applications that specify a different belt number.\u003c\/p\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\u003eOil pump drive V-belt\u003c\/dd\u003e\n    \u003cdt\u003eBrand application\u003c\/dt\u003e\n\u003cdd\u003eYamaha Outboard\u003c\/dd\u003e\n    \u003cdt\u003eEngine type\u003c\/dt\u003e\n\u003cdd\u003eSelected 4-stroke outboards\u003c\/dd\u003e\n    \u003cdt\u003eReplacement quantity\u003c\/dt\u003e\n\u003cdd\u003e1 belt\u003c\/dd\u003e\n    \u003cdt\u003eOEM reference\u003c\/dt\u003e\n\u003cdd\u003e6G8-46241-00-00\u003c\/dd\u003e\n    \u003cdt\u003eAftermarket reference\u003c\/dt\u003e\n\u003cdd\u003eSierra 18-15133\u003c\/dd\u003e\n    \u003cdt\u003eRecommended maintenance interval\u003c\/dt\u003e\n\u003cdd\u003e5 years or 100 hours of use, whichever comes first\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 × oil pump drive belt\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\u003eStop the engine, allow it to cool and follow the safety procedures in the applicable Yamaha service manual.\u003c\/li\u003e\n    \u003cli\u003eRemove the required covers to access the oil pump belt and note the original belt routing before removal.\u003c\/li\u003e\n    \u003cli\u003eInspect the oil-pump pulley, drive pulley and surrounding components for wear, damage or contamination.\u003c\/li\u003e\n    \u003cli\u003eRemove the old belt and install the replacement belt in the same routing and pulley position.\u003c\/li\u003e\n    \u003cli\u003eSet belt tension according to the engine service manual. Do not guess the tension or use this belt as a camshaft or crankshaft timing belt.\u003c\/li\u003e\n    \u003cli\u003eRotate the drive system by hand as permitted by the service procedure, then reinstall all covers before starting the engine.\u003c\/li\u003e\n    \u003cli\u003eAfter installation, check for abnormal noise, belt tracking and signs of oil leakage. Professional installation is recommended if the correct routing or tension is uncertain.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eMaintenance and FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does this belt drive?\u003c\/summary\u003e\n    \u003cp\u003eThis is an oil pump drive belt. It is used in the oil-pump drive system and should not be described as a camshaft or crankshaft timing belt.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should the belt be replaced?\u003c\/summary\u003e\n    \u003cp\u003eThe company recommendation is to replace it every 5 years or 100 hours of use, whichever comes first. Inspect it regularly and replace it immediately if it is cracked, glazed, frayed, contaminated or otherwise damaged.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this fit every Yamaha F9.9, FT9.9 or T9.9?\u003c\/summary\u003e\n    \u003cp\u003eNo. The documented fitment is limited to Yamaha 4-stroke F9.9 models from 1985–2005, FT9.9 models from 1985–1990, and T9.9 models from 1991–2005. Verify the exact model and belt reference before purchase.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this an OEM Yamaha belt?\u003c\/summary\u003e\n    \u003cp\u003eNo. This listing is for an aftermarket replacement belt identified by the documented aftermarket reference Sierra 18-15133. Yamaha reference 6G8-46241-00-00 is provided for identification and fitment checking.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I install it myself?\u003c\/summary\u003e\n    \u003cp\u003eInstallation may be possible for an experienced technician, but correct routing and belt tension are important. Follow the applicable service-manual procedure or use a qualified marine technician.\u003c\/p\u003e\n  \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 exact engine model, year and existing belt reference before ordering.\u003c\/li\u003e\n    \u003cli\u003eThis product is an aftermarket replacement component and is not an original Yamaha-manufactured part.\u003c\/li\u003e\n    \u003cli\u003eDo not install this oil pump belt in a camshaft or crankshaft timing-belt application.\u003c\/li\u003e\n    \u003cli\u003eIncorrect belt routing or tension can cause oil-pump drive failure and engine damage.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended when the service procedure or fitment is uncertain.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMarine replacement parts\u003c\/strong\u003e — Practical replacement components for marine maintenance and repair.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFitment-focused listings\u003c\/strong\u003e — Reference numbers and model-year ranges are provided to support compatibility checks.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCustomer support\u003c\/strong\u003e — Contact support with your engine model and existing part information if you need help checking fitment.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723985686843,"sku":"23BL219","price":35.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Belt23BL2196G8-46241-00_1.jpg?v=1763039451"},{"product_id":"water-pump-repair-kit-fits-yamaha-ft8-ft9-9-4-stroke-outboards-replaces-69g-w0078-00-00-69g-w0078-02-00","title":"Water Pump Repair Kit for Yamaha FT8 and FT9.9 4-Stroke Outboards — Replaces 69G-W0078-00-00 and 69G-W0078-02-00","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 \u003cstrong\u003eWater Pump Repair Kit\u003c\/strong\u003e is an aftermarket service kit for selected Yamaha FT8 and FT9.9 four-stroke outboard engines. It is intended to service the water-pump assembly and help restore reliable cooling-water circulation during routine maintenance or repair.\u003c\/p\u003e\n\u003cp\u003eThe kit is associated with Yamaha OEM reference numbers \u003cstrong\u003e69G-W0078-00-00\u003c\/strong\u003e and \u003cstrong\u003e69G-W0078-02-00\u003c\/strong\u003e. Confirm the exact engine model, year, and OEM reference before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eService components for rebuilding the compatible water-pump assembly.\u003c\/li\u003e\n  \u003cli\u003eIncludes an impeller, seals, O-ring, plate, key, and mounting hardware as listed below.\u003c\/li\u003e\n  \u003cli\u003eHelps maintain proper cooling flow and reduce the risk of overheating caused by worn water-pump components.\u003c\/li\u003e\n  \u003cli\u003eAftermarket replacement; not manufactured or sold by Yamaha.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThese are the customer-facing OEM reference numbers associated with this repair-kit application. They are provided for identification and fitment checking, not as a claim that the product is a Yamaha-branded part.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eOEM Reference\u003c\/th\u003e\n        \u003cth\u003eApplication Note\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\u003e69G-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003eEarlier water-pump repair-kit reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e69G-W0078-02-00\u003c\/td\u003e\n        \u003ctd\u003eLater\/current reference found in catalog applications\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 applications below are the model\/year combinations identified for this water-pump service-kit family. Always compare your engine identification label and existing OEM reference before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Compatible Engine Models\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Reference\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\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eFT8D \/ FT8G\u003c\/td\u003e\n        \u003ctd\u003e8\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2001–2014\u003c\/td\u003e\n        \u003ctd\u003e69G-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003eVerify the exact model suffix and existing part number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eFT9.9G\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2008–2012\u003c\/td\u003e\n        \u003ctd\u003e69G-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003eVerify the exact model suffix and existing part number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eFT9.9J\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2013 and later\u003c\/td\u003e\n        \u003ctd\u003e69G-W0078-02-00\u003c\/td\u003e\n        \u003ctd\u003eVerify the exact model suffix and existing part 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 Repair Kit\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSelected Yamaha FT8 and FT9.9 four-stroke outboards\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eReplacement service kit for the compatible water-pump assembly\u003c\/dd\u003e\n  \u003cdt\u003eBrand Status\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement; not OEM\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 Cartridge Insert (63V-44322-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Water Seal Damper 2 (68T-44366-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Impeller (63V-44352-01-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Woodruff Key (664-44338-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x O-Ring (93210-44704-00 \/ 93210-44398)\u003c\/li\u003e\n  \u003cli\u003e1 x Cartridge Outer Plate (68T-44323-00-00)\u003c\/li\u003e\n  \u003cli\u003e4 x Water-pump mounting bolts (97095-08045-00 \/ 97080-08045)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eComponent reference numbers are supplied for identification. Compare the original components and engine application before installation.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery, remove the engine cover, and disconnect the shift linkage as required by the engine service procedure.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower-unit mounting bolts and carefully separate the lower unit from the upper casing.\u003c\/li\u003e\n  \u003cli\u003eRemove the old water-pump housing assembly and note the orientation of each component before disassembly.\u003c\/li\u003e\n  \u003cli\u003eClean the driveshaft, pump housing, and mating surfaces, removing old gasket material and residue.\u003c\/li\u003e\n  \u003cli\u003eInstall the cartridge insert and water-seal damper in the correct orientation.\u003c\/li\u003e\n  \u003cli\u003ePosition the woodruff key on the driveshaft and install the new impeller while turning the shaft in the specified direction.\u003c\/li\u003e\n  \u003cli\u003eFit the new O-ring and cartridge outer plate, then secure the pump housing with the four replacement bolts. Tighten all fasteners to the engine manufacturer's specified torque.\u003c\/li\u003e\n  \u003cli\u003eReinstall the lower unit, aligning the driveshaft, shift shaft, and water tube correctly. Run the engine only with an appropriate water supply and confirm that cooling-water flow is present.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eUse the official service manual for your exact engine model for torque values, disassembly requirements, alignment details, and safety procedures.\u003c\/p\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this kit fits my Yamaha outboard?\u003c\/summary\u003e\u003cp\u003eCheck the complete model designation, production year, stroke type, and existing water-pump reference against the compatibility table. This listing is for selected FT8 and FT9.9 four-stroke applications, not every Yamaha 8 HP or 9.9 HP outboard. If the model suffix or OEM reference differs, confirm fitment before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include weak or absent water flow from the telltale, overheating, an overheating warning, or steam from the engine. Stop operation promptly if the engine overheats and inspect the cooling system before further use.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace the water-pump service components?\u003c\/summary\u003e\u003cp\u003eReplacement intervals depend on the engine manufacturer's maintenance schedule and operating conditions. Inspect the impeller and related components regularly, especially after operation in salt water, sandy water, muddy water, or other abrasive conditions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM Yamaha kit?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement kit associated with the Yamaha OEM references shown on this page. Yamaha is a trademark of its respective owner and is used only to identify application and compatibility.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I install the kit myself?\u003c\/summary\u003e\u003cp\u003eWater-pump service requires removal and correct reinstallation of the lower unit. Professional installation is recommended unless you have the appropriate tools, service information, and experience with outboard lower-unit work.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat if my original parts look different?\u003c\/summary\u003e\u003cp\u003eDo not force installation or rely on horsepower alone. Compare the complete engine model, year, OEM reference, component shape, and mounting arrangement before use.\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, year, stroke type, and OEM reference before ordering.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery before service and follow the correct lower-unit removal procedure.\u003c\/li\u003e\n  \u003cli\u003eNever run the outboard without an adequate water supply.\u003c\/li\u003e\n  \u003cli\u003eUse the manufacturer's specified torque values and installation sequence.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM Yamaha component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safe and reliable operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePro-Grade Standards — We supply marine replacement parts selected for practical service and real-world operating conditions.\u003c\/li\u003e\n  \u003cli\u003eGlobal Fulfillment — Standard and expedited shipping options are shown at checkout where available.\u003c\/li\u003e\n  \u003cli\u003eManufacturer-Direct Value — Competitive replacement-part pricing without representing aftermarket products as OEM.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723985752379,"sku":"23KY704","price":56.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Yamaha_8-30HP_69G-W0078-00_-_JLM_MARINE-8289293.jpg?v=1763039454"},{"product_id":"water-pump-impeller-kit-fits-yamaha-8-9-9hp-4-stroke-outboard-replaces-69g-w0078-02-00-18-3450-9-48613","title":"Yamaha 2-Stroke Water Pump Repair Kit for T8D, T8E, T8P, T9.9G, T9.9L \u0026 T9.9X Outboards (2001–2024)","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\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 \u003cstrong\u003ewater pump repair kit\u003c\/strong\u003e is designed for selected Yamaha 2-stroke outboard motors. It is intended for water pump service on Yamaha T8 and T9.9 models listed below and helps restore the water pump's ability to circulate cooling water through the engine.\u003c\/p\u003e\n\u003cp\u003eThis is an aftermarket replacement kit supplied for applications using Yamaha OEM references \u003cstrong\u003e69G-W0078-00-00\u003c\/strong\u003e, \u003cstrong\u003e69G-W0078-01-00\u003c\/strong\u003e, or \u003cstrong\u003e69G-W0078-02-00\u003c\/strong\u003e. The corresponding aftermarket reference identified for this product is \u003cstrong\u003eSierra 18-3475\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFor Yamaha 2-stroke outboards only; it is not a 4-stroke application.\u003c\/li\u003e\n\u003cli\u003eInstalls in the lower-unit water pump assembly.\u003c\/li\u003e\n\u003cli\u003eFor water pump repair and cooling-system maintenance.\u003c\/li\u003e\n\u003cli\u003eThis is a water pump service kit supplied \u003cstrong\u003ewithout the water pump housing\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following references to compare the kit with the number shown in your engine parts information. Verify the exact model and year before ordering.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eReference Type\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\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e69G-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n        \u003ctd\u003eWater pump repair kit reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e69G-W0078-01-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n        \u003ctd\u003eWater pump repair kit reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e69G-W0078-02-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n        \u003ctd\u003eWater pump repair kit reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3475\u003c\/td\u003e\n        \u003ctd\u003eAftermarket reference\u003c\/td\u003e\n        \u003ctd\u003eAftermarket water pump kit reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe company fitment record identifies this repair kit for the following Yamaha 2-stroke model families from \u003cstrong\u003e2001 through 2024\u003c\/strong\u003e:\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\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 References\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\u003eT8D, T8E, T8P\u003c\/td\u003e\n        \u003ctd\u003e8\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2001–2024\u003c\/td\u003e\n        \u003ctd\u003e69G-W0078-00-00\u003cbr\u003e69G-W0078-01-00\u003cbr\u003e69G-W0078-02-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eT9.9G, T9.9L, T9.9X\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2001–2024\u003c\/td\u003e\n        \u003ctd\u003e69G-W0078-00-00\u003cbr\u003e69G-W0078-01-00\u003cbr\u003e69G-W0078-02-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eModel suffixes, production details, and serial-number ranges can vary. Confirm the complete model designation and the number on your original water pump kit before installation. Do not use this listing for Yamaha 4-stroke engines.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eWater pump repair kit\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eYamaha outboard water pump service\u003c\/dd\u003e\n  \u003cdt\u003eEngine Type\u003c\/dt\u003e\n  \u003cdd\u003e2-Stroke\u003c\/dd\u003e\n  \u003cdt\u003eRated Engine Range\u003c\/dt\u003e\n  \u003cdd\u003e8 HP and 9.9 HP applications listed above\u003c\/dd\u003e\n  \u003cdt\u003eInstallation Location\u003c\/dt\u003e\n  \u003cdd\u003eLower unit water pump assembly\u003c\/dd\u003e\n  \u003cdt\u003eHousing\u003c\/dt\u003e\n  \u003cdd\u003eWater pump housing not included\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Reference\u003c\/dt\u003e\n  \u003cdd\u003eSierra 18-3475\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cp\u003eThis listing is for the water pump repair kit for the applications stated above. The kit is supplied without the water pump housing. Individual component quantities and part-level contents may vary by production batch; compare the kit with the original assembly and the applicable parts diagram before installation.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eConfirm that the engine is a Yamaha 2-stroke T8 or T9.9 model covered by the compatibility information above.\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery, remove the engine stop-switch lanyard, and secure the outboard according to the manufacturer's service instructions.\u003c\/li\u003e\n\u003cli\u003eRemove the lower unit while taking care not to damage the shift shaft, driveshaft, or water tube.\u003c\/li\u003e\n\u003cli\u003eRemove the water pump cover and inspect the existing housing, plate, key, and related sealing surfaces.\u003c\/li\u003e\n\u003cli\u003eRemove the worn water pump service components and clean salt, corrosion, and debris from the pump area.\u003c\/li\u003e\n\u003cli\u003eInstall the replacement components in the same orientation as the original assembly. Ensure the impeller key and impeller are correctly seated.\u003c\/li\u003e\n\u003cli\u003eBecause the housing is not included, reuse the original housing only if it is serviceable and within the manufacturer's wear limits.\u003c\/li\u003e\n\u003cli\u003eReinstall the water pump cover and lower unit using the manufacturer's specified fasteners, torque values, sealants, and adjustment procedures.\u003c\/li\u003e\n\u003cli\u003eAfter assembly, run the outboard in an appropriate test tank or in water and confirm a steady cooling-water telltale stream before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFollow the Yamaha service manual for your exact model. If the water pump housing is scored, warped, excessively worn, or damaged, replace it separately before operating the engine.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this kit for a Yamaha 4-stroke outboard?\u003c\/summary\u003e\u003cp\u003eNo. The company fitment for this product is Yamaha 2-stroke T8D, T8E, T8P, T9.9G, T9.9L, and T9.9X model families. It should not be used for the 4-stroke applications stated in the previous listing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the kit include the water pump housing?\u003c\/summary\u003e\u003cp\u003eNo. This is a water pump service kit supplied without the water pump housing. Inspect your existing housing and replace it separately if it is worn or damaged.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich Yamaha references should I compare?\u003c\/summary\u003e\u003cp\u003eCompare your original part or parts diagram with Yamaha references 69G-W0078-00-00, 69G-W0078-01-00, and 69G-W0078-02-00. The aftermarket reference identified for this product is Sierra 18-3475.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this fit every Yamaha 8 HP or 9.9 HP engine?\u003c\/summary\u003e\u003cp\u003eNo. The listed fitment is limited to the specified Yamaha 2-stroke T8D, T8E, T8P, T9.9G, T9.9L, and T9.9X model families for the stated 2001–2024 range. Verify the complete model designation before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are signs that the water pump needs service?\u003c\/summary\u003e\u003cp\u003eA weak or intermittent telltale stream, overheating, an overheating alarm, steam, or damaged and brittle impeller vanes can indicate water pump wear. Stop operation if the engine overheats and inspect the complete cooling-water system.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShould the housing be replaced with the repair kit?\u003c\/summary\u003e\u003cp\u003eReplace the housing if it is scored, cracked, distorted, or beyond the wear limit specified for your engine. The housing is not included in this kit.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM Yamaha part?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket water pump repair kit intended for applications using the listed Yamaha OEM references.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the complete engine model, stroke type, year range, and original part reference before purchase.\u003c\/li\u003e\n\u003cli\u003eDo not install this kit on a 4-stroke engine or on a model not listed above.\u003c\/li\u003e\n\u003cli\u003eThe water pump housing is not included; inspect the original housing before reassembly.\u003c\/li\u003e\n\u003cli\u003eUse the service manual for your exact engine for torque values, sealing procedures, shift-linkage adjustment, and post-installation testing.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended if you are not experienced with outboard lower-unit service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMarine replacement parts for routine repair and maintenance.\u003c\/li\u003e\n\u003cli\u003eProduct information organized around documented engine applications and reference numbers.\u003c\/li\u003e\n\u003cli\u003eSupport for identifying replacement parts by engine model and original part reference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723985785147,"sku":"26KY001","price":26.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Yamaha_8_99HP_69G-W0078-02_-_JLM_MARINE-8289127.jpg?v=1763039456"},{"product_id":"marine-oil-filter-fits-mercury-yamaha-outboards-replaces-825467a1-825467t1-6g8-13440-00-00","title":"Marine Oil Filter Replacement for Yamaha F8, F9.9 \u0026 FT9.9 4-Stroke Outboards","description":"\u003csection\u003e\n\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 aftermarket \u003cstrong\u003eMarine Oil Filter\u003c\/strong\u003e is designed for selected Yamaha four-stroke outboards. According to the product fitment information, it is intended for Yamaha F8 models from 1990–1999 and Yamaha F9.9 and FT9.9 models from 1990–2005.\u003c\/p\u003e\n\u003cp\u003eThe filter is listed as an aftermarket replacement reference for Yamaha \u003cstrong\u003e6G8-13440-00\u003c\/strong\u003e and \u003cstrong\u003e6G8-13440-00-00\u003c\/strong\u003e. The aftermarket reference is \u003cstrong\u003e18-7901\u003c\/strong\u003e. Mercury Marine reference numbers \u003cstrong\u003e825467A1\u003c\/strong\u003e, \u003cstrong\u003e825467T1\u003c\/strong\u003e, and \u003cstrong\u003e825467T02\u003c\/strong\u003e are also associated with this replacement reference; confirm the exact engine application and original part number before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement oil filter for selected Yamaha outboards.\u003c\/li\u003e\n  \u003cli\u003eSuitable for the listed F8, F9.9, and FT9.9 four-stroke applications.\u003c\/li\u003e\n  \u003cli\u003eSupplied as one individual filter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the references below to compare the filter with the part installed on your engine. Part-number correspondence does not replace confirmation of the complete model and year fitment.\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\u003eAftermarket reference\u003c\/td\u003e\n        \u003ctd\u003e18-7901\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha OEM reference\u003c\/td\u003e\n        \u003ctd\u003e6G8-13440-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha OEM reference\u003c\/td\u003e\n        \u003ctd\u003e6G8-13440-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Marine reference\u003c\/td\u003e\n        \u003ctd\u003e825467A1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Marine reference\u003c\/td\u003e\n        \u003ctd\u003e825467T1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Marine reference\u003c\/td\u003e\n        \u003ctd\u003e825467T02\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\u003eCheck your engine brand, model, horsepower, stroke type, and model year before purchasing. The confirmed company fitment for this product is shown below.\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\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eModel Years\u003c\/th\u003e\n        \u003cth\u003eOEM Reference\u003c\/th\u003e\n        \u003cth\u003eApplication Notes\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\u003eF8\u003c\/td\u003e\n        \u003ctd\u003e8 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1990–1999\u003c\/td\u003e\n        \u003ctd\u003e6G8-13440-00\u003c\/td\u003e\n        \u003ctd\u003eConfirm the complete engine model designation before ordering.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF9.9\u003c\/td\u003e\n        \u003ctd\u003e9.9 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1990–2005\u003c\/td\u003e\n        \u003ctd\u003e6G8-13440-00\u003c\/td\u003e\n        \u003ctd\u003eConfirm the complete engine model designation before ordering.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eFT9.9\u003c\/td\u003e\n        \u003ctd\u003e9.9 HP\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1990–2005\u003c\/td\u003e\n        \u003ctd\u003e6G8-13440-00\u003c\/td\u003e\n        \u003ctd\u003eConfirm the complete engine model designation before ordering.\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\u003eOil Filter\u003c\/dd\u003e\n  \u003cdt\u003ePart Format\u003c\/dt\u003e\n  \u003cdd\u003eIndividual replacement filter\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Reference\u003c\/dt\u003e\n  \u003cdd\u003e18-7901\u003c\/dd\u003e\n  \u003cdt\u003ePrimary Listed Brand Application\u003c\/dt\u003e\n  \u003cdd\u003eYamaha Outboard\u003c\/dd\u003e\n  \u003cdt\u003eConfirmed Stroke Application\u003c\/dt\u003e\n  \u003cdd\u003e4-Stroke\u003c\/dd\u003e\n  \u003cdt\u003eConfirmed Yamaha OEM Reference\u003c\/dt\u003e\n  \u003cdd\u003e6G8-13440-00\u003c\/dd\u003e\n  \u003cdt\u003eAlternate Yamaha Reference\u003c\/dt\u003e\n  \u003cdd\u003e6G8-13440-00-00\u003c\/dd\u003e\n  \u003cdt\u003eAssociated Mercury Marine References\u003c\/dt\u003e\n  \u003cdd\u003e825467A1, 825467T1, 825467T02\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Oil filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eConfirm that the replacement filter matches the original filter and the references listed above.\u003c\/li\u003e\n  \u003cli\u003eRun the engine only as recommended by the engine manufacturer before servicing, then allow hot components and oil to cool as appropriate.\u003c\/li\u003e\n  \u003cli\u003ePlace a suitable drain pan beneath the filter area to catch oil.\u003c\/li\u003e\n  \u003cli\u003eRemove the old filter using the appropriate removal method for the engine and filter design.\u003c\/li\u003e\n  \u003cli\u003eClean the filter mounting area and make sure the old sealing gasket, if fitted, has been removed.\u003c\/li\u003e\n  \u003cli\u003ePrepare and install the replacement filter according to the Yamaha service manual for your exact engine model.\u003c\/li\u003e\n  \u003cli\u003eRefill or check the engine oil as required by the service manual.\u003c\/li\u003e\n  \u003cli\u003eStart the engine briefly, inspect the filter area for leaks, and recheck the oil level 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 filter fits my outboard?\u003c\/summary\u003e\u003cp\u003eCompare your engine's brand, complete model designation, horsepower, four-stroke configuration, and model year with the compatibility table. Also compare the original filter or service-manual reference with 18-7901, 6G8-13440-00, or 6G8-13440-00-00.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this listing fit every Yamaha F8, F9.9, or FT9.9 engine?\u003c\/summary\u003e\u003cp\u003eNo. The confirmed company fitment is Yamaha F8 four-stroke models from 1990–1999 and Yamaha F9.9 and FT9.9 four-stroke models from 1990–2005. Verify the exact model and year before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre Mercury references included as fitment confirmation?\u003c\/summary\u003e\u003cp\u003eThe Mercury Marine references 825467A1, 825467T1, and 825467T02 are associated with the listed aftermarket replacement reference. The available product fitment data specifically confirms the Yamaha applications shown above, so Mercury owners should verify the exact engine application and original filter reference before purchase.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhen should the oil filter be replaced?\u003c\/summary\u003e\u003cp\u003eReplace the oil filter at the interval specified in the service manual for your exact outboard. Many maintenance schedules call for filter replacement during an oil change, but the manufacturer's schedule takes priority.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM filter?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement filter. Yamaha and Mercury reference numbers are provided for identification and cross-reference purposes only.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is included with the purchase?\u003c\/summary\u003e\u003cp\u003eThe package contains one individual oil filter. No additional filter, gasket, wrench, or installation tool is specified as included.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need a special tool to install it?\u003c\/summary\u003e\u003cp\u003eTool requirements depend on the original filter and the engine installation. Use the procedure and tools specified in the service manual for your exact model.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the complete engine model, year, stroke type, and original filter reference before ordering.\u003c\/li\u003e\n  \u003cli\u003eDo not rely on horsepower alone to determine compatibility.\u003c\/li\u003e\n  \u003cli\u003eFollow the engine manufacturer's service instructions for oil type, oil quantity, tightening procedure, and replacement interval.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eDispose of used oil and the old filter in accordance with local environmental regulations.\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 a range of marine applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product references and available fitment information are provided to support part identification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomer Support\u003c\/strong\u003e — Compare your original part and complete engine details before ordering when application-specific confirmation is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723985916219,"sku":"23FF127","price":17.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/6G8-13440-00_2.jpg?v=1763039463"},{"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\/yamaha-4-stroke-8-9-9hp-outboard-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}