{"title":"Yamaha 40-70HP 4-Stroke Outboard Engine Parts","description":"\u003csection id=\"hero\" style=\"max-width:980px;margin:0 auto;padding:16px;\"\u003e\n  \u003cp\u003eThis page is tailored for Yamaha 4-Stroke 40–70HP outboard engines. Use it to find compatible parts, service guidance, maintenance tips, common replacement items, and troubleshooting help. You can also browse the main Yamaha collection for a wider selection. 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\/section.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\" style=\"display:inline-block;padding:10px 16px;border:1px solid #036;border-radius:4px;text-decoration:none;\"\u003eBrowse All Yamaha Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width:980px;margin:0 auto;padding:16px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 40–70HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the ID plate\/sticker on the transom or swivel bracket (often starboard side). It lists the model code and serial number.\u003c\/li\u003e\n    \u003cli\u003eRead the model code: “F40\/F50\/F60\/F70” indicates 4‑stroke models; suffixes typically denote shaft length, control\/steering type, and production run.\u003c\/li\u003e\n    \u003cli\u003ePlatform clues: F40\/F50\/F60 are commonly inline‑3; F70 is an inline‑4. Coil count, intake layout, and cowl badging help distinguish them.\u003c\/li\u003e\n    \u003cli\u003eConfirm it’s a 4‑stroke: presence of an engine oil fill cap and dipstick (no premix reservoir like many 2‑strokes).\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"max-width:980px;margin:0 auto;padding:16px;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n  \u003ch3\u003eF40\/F50\/F60 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 #ccc;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInline‑3, 4‑stroke, EFI on later years (earlier units may be carbureted)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eF40, F50, F60\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eCompact, light weight, strong fuel economy and mid‑range torque\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eMany service items interchange across F30–F60 families, but water pump kits and filters vary by year—verify using model\/serial.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eF70 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 #ccc;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInline‑4, 4‑stroke, EFI\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eF70\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eExcellent power‑to‑weight, responsive acceleration, efficient cruising\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eShares some hardware lineage with smaller fours, but many filters, anodes, and gaskets are F70‑specific—confirm by model code.\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:0 auto;padding:16px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for Yamaha 4‑stroke 40–70HP engines. Always follow your engine’s official service manual and usage 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 #ccc;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eUse FC‑W marine 4‑stroke oil; warm engine before draining; replace filter each service.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-service-maintenance-kits\"\u003eYamaha Service \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInspect for water intrusion (milky oil) and metal on drain plug; reseal if needed.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 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:6px 0;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInspect at 100 hours; replace as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eCheck gap and color; replace fouled or worn plugs to maintain idle quality.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEvery 100 hours or sooner with suspect fuel\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eReplace inline\/under‑cowl filter; drain\/replace water separator; inspect primer bulb and lines.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 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:6px 0;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eEvery 200 hours or 2 seasons\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eService sooner for sandy\/silty use or weak telltale stream.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 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:6px 0;\"\u003eAnodes (external \u0026amp; internal)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInspect often; replace when ~50% consumed\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eChoose alloy for your water (zinc, aluminum, or magnesium). Don’t paint anodes.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-anodes\"\u003eYamaha Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eThermostat\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eInspect every 200 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eReplace if corroded or if engine runs cool\/hot; crucial for proper EFI warm‑up.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\"\u003eYamaha Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cp style=\"font-size:12px;color:#555;\"\u003e*Intervals may vary by model year and operating environment. Always confirm with your Yamaha service manual.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"max-width:980px;margin:0 auto;padding:16px;\"\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\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-starters\"\u003eYamaha Starters\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\u003eLower Unit \u0026amp; 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:0 auto;padding:16px;\"\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 #ccc;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eWeak telltale stream or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eIntake screens for debris; telltale hose for kinks; impeller and thermostat condition\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eWater pump kit, thermostat, intake screen\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003ePoor acceleration \/ loss of power\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eFuel quality; clogged fuel filter; damaged\/mismatched prop; fouled plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eFuel filter, propeller, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eBattery voltage and connections; water in fuel; vacuum leaks; plug condition\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eSpark plugs, fuel filter, starter, gaskets\/hoses\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eGearcase noise or metal on magnetic plug\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eGear oil level\/condition; prop shaft fishing line; seal condition\u003c\/td\u003e\n        \u003ctd style=\"padding:6px 0;\"\u003eLower unit seal kit, gear lube, prop shaft seals\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"max-width:980px;margin:0 auto;padding:16px;\"\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 interchange across F40\/F50\/F60 models, while the F70 often uses unique components. Always confirm using your exact model code and serial number.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule of thumb, replace every 200 hours or every 2 seasons, and sooner if you notice a weak telltale stream, overheating, or if the engine is run in sandy or silty water.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should the gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eChange at least annually or every 100 hours. If water intrusion (milky oil) is found, service seals and replace oil immediately.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do I need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the complete model code, serial number, approximate year, shaft length, and control type. A clear photo of the nameplate and the part you’re replacing is also helpful.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"max-width:980px;margin:0 auto;padding:16px;\"\u003e\n  \u003cp\u003eReady to find parts for your Yamaha 40–70HP 4‑stroke? Browse the main Yamaha collection by horsepower, year, and model.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/yamaha-outboard-parts\" style=\"display:inline-block;padding:10px 16px;border:1px solid #036;border-radius:4px;text-decoration:none;\"\u003eShop Yamaha Outboard Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px;color:#555;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"water-pump-impeller-repair-kit-fits-yamaha-f40-f70-4-stroke-replaces-6cj-w0078-00-6cj-w0078-01-00","title":"Water Pump Repair Kit Without Housing – Fits Yamaha F70A 4-Stroke (2010–2017) – Replaces 6CJ-W0078-00-00 \/ 6CJ-W0078-01-00","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003ewater pump repair kit without housing\u003c\/strong\u003e is designed for Yamaha F70A 4-stroke outboard engines from approximately 2010–2017. It replaces the original water pump service kit and provides the key wear components needed to restore water-pump performance and help maintain proper engine cooling.\u003c\/p\u003e\n\u003cp\u003eThe kit is associated with Yamaha OEM references \u003cstrong\u003e6CJ-W0078-00-00\u003c\/strong\u003e and \u003cstrong\u003e6CJ-W0078-01-00\u003c\/strong\u003e. Sierra reference \u003cstrong\u003e18-3494\u003c\/strong\u003e is also listed for the F70A application and replaces 6CJ-W0078-00-00. Always compare the engine model code, year, original water-pump parts and kit contents before ordering.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRepair-kit configuration supplied without the water-pump housing.\u003c\/li\u003e\n\u003cli\u003eIncludes the impeller and related seals, gaskets and pump wear components needed for a water-pump service.\u003c\/li\u003e\n\u003cli\u003eSuitable for routine cooling-system maintenance when the existing housing remains serviceable.\u003c\/li\u003e\n\u003cli\u003eAftermarket replacement; Yamaha and Sierra references are used for identification and compatibility only.\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 your original part and service information.\u003c\/p\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \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\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6CJ-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6CJ-W0078-01-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference listed for the water pump repair kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3494\u003c\/td\u003e\n        \u003ctd\u003eAftermarket reference; listed as replacing 6CJ-W0078-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm the complete model designation and production year on your engine before purchase. The documented application for this repair-kit family is Yamaha F70A 4-stroke outboards in the approximate 2010–2017 range.\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        \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\u003eF70A\u003c\/td\u003e\n        \u003ctd\u003e70\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2010–2017\u003c\/td\u003e\n        \u003ctd\u003e6CJ-W0078-00-00 \/ 6CJ-W0078-01-00\u003c\/td\u003e\n        \u003ctd\u003eRepair kit without housing; verify model code and existing housing condition\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 F40 application stated in the previous page has been removed. The available catalog evidence identifies this kit with the Yamaha F70A application, not as a confirmed F40 kit. Do not use horsepower alone to determine fitment.\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 without housing\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eYamaha F70A 4-stroke outboard\u003c\/dd\u003e\n  \u003cdt\u003eApproximate Application Years\u003c\/dt\u003e\n  \u003cdd\u003e2010–2017\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eReplacement service parts for the water-pump assembly\u003c\/dd\u003e\n  \u003cdt\u003eHousing\u003c\/dt\u003e\n  \u003cdd\u003eNot included; reuse the original housing only if it is serviceable\u003c\/dd\u003e\n  \u003cdt\u003ePrimary OEM References\u003c\/dt\u003e\n  \u003cdd\u003e6CJ-W0078-00-00 and 6CJ-W0078-01-00\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Reference\u003c\/dt\u003e\n  \u003cdd\u003eSierra 18-3494\u003c\/dd\u003e\n  \u003cdt\u003eProduct Status\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement, not a Yamaha-branded OEM component\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 is a repair kit without the water-pump housing. The kit contents are intended to include the following service components:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWater pump impeller\u003c\/li\u003e\n  \u003cli\u003eWater pump cover\u003c\/li\u003e\n  \u003cli\u003eInsert cup\u003c\/li\u003e\n  \u003cli\u003eImpeller key\u003c\/li\u003e\n  \u003cli\u003eO-ring\u003c\/li\u003e\n  \u003cli\u003eOil seal\u003c\/li\u003e\n  \u003cli\u003eWear plate\u003c\/li\u003e\n  \u003cli\u003eWater damper seal\u003c\/li\u003e\n  \u003cli\u003eWater-pump gaskets\u003c\/li\u003e\n  \u003cli\u003ePin or dowel\u003c\/li\u003e\n  \u003cli\u003eBolts and washers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHousing not included.\u003c\/strong\u003e Inspect the original housing for scoring, distortion, corrosion or excessive wear before installation. Replace it separately if necessary.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and make sure the engine is securely supported before beginning work.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit according to the service procedure for your Yamaha F70A model.\u003c\/li\u003e\n  \u003cli\u003eRemove the water-pump cover and take out the old impeller, key, seals, gaskets and other service parts.\u003c\/li\u003e\n  \u003cli\u003eInspect the existing water-pump housing, insert cup and related surfaces. This kit does not include the housing.\u003c\/li\u003e\n  \u003cli\u003eClean all mating surfaces and remove debris, corrosion and remnants of old gaskets.\u003c\/li\u003e\n  \u003cli\u003eInstall the new key and impeller, orienting the impeller vanes in the correct direction for the engine’s shaft rotation.\u003c\/li\u003e\n  \u003cli\u003eInstall the new wear plate, seals, gaskets, cover and fasteners included with the kit. Follow the Yamaha service manual for torque values and sealant requirements.\u003c\/li\u003e\n  \u003cli\u003eReinstall the lower unit and reconnect any hoses or tubes that were removed.\u003c\/li\u003e\n  \u003cli\u003eAfter assembly, run the engine in an appropriate water supply and confirm a strong, steady tell-tale stream before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eWater-pump service affects engine cooling. If you are unfamiliar with lower-unit removal or manufacturer torque procedures, use a qualified marine technician.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm that this kit fits my engine?\u003c\/summary\u003e\n  \u003cp\u003eConfirm that your engine is a Yamaha F70A 4-stroke and compare the model year, OEM water-pump reference and original kit configuration. The documented application is approximately 2010–2017. Serial-number or regional variations may apply, so compare your original parts before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this kit fit Yamaha F40 outboards?\u003c\/summary\u003e\n  \u003cp\u003eF40 compatibility is not confirmed for this kit. The available application evidence identifies the kit with Yamaha F70A water-pump repair kits. Do not purchase for an F40 based only on a similar part number or engine family.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs the water-pump housing included?\u003c\/summary\u003e\n  \u003cp\u003eNo. This is a repair kit without the water-pump housing. The original housing must be inspected and reused only if it remains within serviceable condition.\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 intermittent tell-tale stream, an overheating warning, elevated operating temperature or steam from the exhaust. Stop operating the engine if it overheats and diagnose the cooling system before further use.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\n  \u003cp\u003eReplacement intervals depend on the engine manufacturer’s service schedule, operating hours and conditions such as saltwater, sand or extended storage. Inspect and replace the impeller at the interval specified in your Yamaha service literature.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the difference between 6CJ-W0078-00-00 and 6CJ-W0078-01-00?\u003c\/summary\u003e\n  \u003cp\u003eBoth numbers are documented references for Yamaha F70 water-pump repair kits in the available catalog data. The exact applicability can vary by model year and catalog revision, so match the reference and model information to your engine before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I install this kit myself?\u003c\/summary\u003e\n  \u003cp\u003eInstallation may be possible for an experienced mechanic with the correct tools and service information. Because incorrect water-pump assembly can cause overheating and engine damage, professional installation is recommended when you are uncertain about lower-unit removal, fastener torque or impeller orientation.\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 listing is for an aftermarket replacement repair kit. Yamaha and Sierra part numbers are provided as identification and compatibility references.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the full Yamaha model designation, year and original part configuration before ordering.\u003c\/li\u003e\n  \u003cli\u003eThis kit does not include the water-pump housing.\u003c\/li\u003e\n  \u003cli\u003eDo not operate an outboard with a weak tell-tale stream or overheating warning.\u003c\/li\u003e\n  \u003cli\u003eFollow the applicable Yamaha service manual for disassembly, torque values, sealant and testing procedures.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and reliable cooling-system performance.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement and is not manufactured or endorsed by Yamaha.\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-Focused Parts\u003c\/strong\u003e — We provide replacement components for common outboard maintenance and repair needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Conscious Listings\u003c\/strong\u003e — Model, year and part-reference information is provided to help you compare the replacement with your original component.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService-Ready Solutions\u003c\/strong\u003e — Repair kits combine commonly replaced water-pump service parts for convenient maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723975201083,"sku":"23KY715","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Yamaha_F40_-_F70_6CJ-W0078-00_-_JLM_MARINE-8289383.jpg?v=1763038990"},{"product_id":"water-pump-impeller-kit-fits-yamaha-f40-f70-4-stroke-replaces-6cj-w0078-00-00","title":"Water Pump Repair Kit Without Housing for Yamaha F70A 4-Stroke (Replaces 6CJ-W0078-00-00)","description":"\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Repair Kit Without Housing\u003c\/strong\u003e is designed for Yamaha F70A 4-stroke outboard engines from 2010–2017. It provides the service components needed to restore the water pump assembly, including the impeller, gaskets, seals, wear components, key, dowel pins, and related hardware.\u003c\/p\u003e\n\u003cp\u003eThis aftermarket kit replaces Yamaha OEM part number \u003cstrong\u003e6CJ-W0078-00-00\u003c\/strong\u003e and corresponds to Sierra part number \u003cstrong\u003e18-3494\u003c\/strong\u003e. The kit is supplied \u003cstrong\u003ewithout the main water pump housing\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eApplication-specific replacement for Yamaha F70A 4-stroke outboards, 2010–2017.\u003c\/li\u003e\n\u003cli\u003eIncludes the principal service components required for a water pump repair.\u003c\/li\u003e\n\u003cli\u003eUse the existing main water pump housing only if it is serviceable and within manufacturer specifications.\u003c\/li\u003e\n\u003cli\u003eVerify the engine model, year, and OEM part number before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these references to compare the repair kit with the applicable OEM and aftermarket numbers.\u003c\/p\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6CJ-W0078-00-00\u003c\/td\u003e\n\u003ctd\u003eOEM replacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3494\u003c\/td\u003e\n\u003ctd\u003eAftermarket water pump repair kit without housing\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 documented application for this repair kit is listed below. Keep the model, year, horsepower, and stroke details together when confirming fitment.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eStroke\u003c\/th\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF70A\u003c\/td\u003e\n\u003ctd\u003e70\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2010–2017\u003c\/td\u003e\n\u003ctd\u003e6CJ-W0078-00-00\u003c\/td\u003e\n\u003ctd\u003eWater pump repair kit without housing\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 Do not assume compatibility with Yamaha F40, F70 variants other than the documented F70A application, or other model years solely because the engine has the same horsepower rating. Confirm the complete model designation and OEM part number before purchase.\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\u003eKit Configuration\u003c\/dt\u003e\n  \u003cdd\u003eWithout main water pump housing\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eYamaha F70A 4-stroke outboard, 2010–2017\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eReplacement service kit for the existing water pump assembly\u003c\/dd\u003e\n  \u003cdt\u003ePrimary Components\u003c\/dt\u003e\n  \u003cdd\u003eImpeller, gaskets, seals, insert, wear plate, key, dowel pins, O-ring, and bolts with washers\u003c\/dd\u003e\n  \u003cdt\u003eOEM Reference\u003c\/dt\u003e\n  \u003cdd\u003eYamaha 6CJ-W0078-00-00\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Reference\u003c\/dt\u003e\n  \u003cdd\u003eSierra 18-3494\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\u003eThe kit is supplied without the main water pump housing. Component quantities are listed below as represented for this repair-kit configuration:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Insert, Cartridge — 63D-44322-00\u003c\/li\u003e\n\u003cli\u003e1 x Water Pump Gasket — 6CJ-44315-00\u003c\/li\u003e\n\u003cli\u003e1 x Pump Housing Cover — 63D-44312-00\u003c\/li\u003e\n\u003cli\u003e1 x Water Damper Seal 2 — 663-44366-00\u003c\/li\u003e\n\u003cli\u003e1 x Impeller — 6H3-44352-00\u003c\/li\u003e\n\u003cli\u003e1 x Woodruff Key — 90280-03M03\u003c\/li\u003e\n\u003cli\u003e2 x Oil Seal — 93101-23070\u003c\/li\u003e\n\u003cli\u003e1 x O-Ring — 93210-46044\u003c\/li\u003e\n\u003cli\u003e1 x Water Pump Gasket — 6CJ-44316-00\u003c\/li\u003e\n\u003cli\u003e1 x Outer Plate, Cartridge — 6CJ-44323-00\u003c\/li\u003e\n\u003cli\u003e1 x Cartridge Gasket — 6CJ-44324-00\u003c\/li\u003e\n\u003cli\u003e2 x Dowel Pin — 93604-10M03\u003c\/li\u003e\n\u003cli\u003e2 x Bolt with Washer — 90119-08M33\u003c\/li\u003e\n\u003cli\u003e2 x Bolt with Washer — 90119-08M14\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBecause this is a kit without the main housing, inspect the existing housing for scoring, distortion, corrosion, or excessive wear before installation. Replace the housing separately if it is not serviceable.\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 F70A 4-stroke from the documented 2010–2017 application range and verify the original OEM part number.\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery and follow the service manual procedure for removing the lower unit.\u003c\/li\u003e\n\u003cli\u003ePlace the outboard in neutral and support the lower unit securely during removal.\u003c\/li\u003e\n\u003cli\u003eRemove the water pump cover and disassemble the existing pump assembly.\u003c\/li\u003e\n\u003cli\u003eInspect the main water pump housing, driveshaft, water tube, keyway, and mating surfaces. This kit does not include the main housing.\u003c\/li\u003e\n\u003cli\u003eRemove old gasket material and clean the mating surfaces without damaging the sealing faces.\u003c\/li\u003e\n\u003cli\u003eInstall the new key, impeller, gaskets, seals, plates, insert, and related hardware in the correct order and orientation.\u003c\/li\u003e\n\u003cli\u003eInstall the impeller with the vanes oriented according to the manufacturer’s service procedure.\u003c\/li\u003e\n\u003cli\u003eReassemble the pump and tighten fasteners to the manufacturer’s specified torque values.\u003c\/li\u003e\n\u003cli\u003eReinstall the lower unit, ensuring correct driveshaft and water-tube alignment, then test the cooling-water tell-tale before normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eAlways use the applicable Yamaha service manual for torque values, sealant requirements, and detailed disassembly and reassembly instructions.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich engine does this kit fit?\u003c\/summary\u003e\u003cp\u003eThe documented application is the Yamaha F70A 70 hp 4-stroke outboard for 2010–2017. Confirm the complete model designation and OEM part number before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit fit a Yamaha F40?\u003c\/summary\u003e\u003cp\u003eThis listing is not confirmed for Yamaha F40 models. Do not use the F40 application from the previous product page as a fitment claim; verify the correct F40-specific water pump kit and OEM part number separately.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the water pump housing included?\u003c\/summary\u003e\u003cp\u003eNo. This is a water pump repair kit without the main water pump housing. It includes service components for the pump assembly, including the impeller, gaskets, seals, plates, insert, key, and related hardware.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat does this kit replace?\u003c\/summary\u003e\u003cp\u003eThe documented OEM replacement reference is Yamaha 6CJ-W0078-00-00. Sierra reference 18-3494 identifies the corresponding aftermarket water pump repair kit without housing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I reuse the old gaskets or seals?\u003c\/summary\u003e\u003cp\u003eNo. Reusing compressed, damaged, or heat-aged gaskets and seals can cause leakage and pump failure. Use the new service components supplied with the kit.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the symptoms of a failing water pump?\u003c\/summary\u003e\u003cp\u003eTypical symptoms can include overheating, a weak or absent tell-tale stream, reduced cooling-water flow, or visible wear and cracking on the removed impeller. Diagnose the complete cooling system before replacing parts.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\u003cp\u003eReplacement intervals depend on operating hours, storage conditions, water quality, and the engine manufacturer’s maintenance schedule. Inspect and replace the impeller and sealing components according to the applicable Yamaha service manual.\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 replacement kit. Yamaha OEM part numbers are shown only as fitment and cross-reference identifiers.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShould installation be performed by a professional?\u003c\/summary\u003e\u003cp\u003eProfessional installation is recommended if you are not experienced with outboard lower-unit and water-pump service. Incorrect assembly can cause cooling-system failure or engine damage.\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, year, stroke, and OEM part number before purchase.\u003c\/li\u003e\n\u003cli\u003eThis kit is documented for Yamaha F70A 4-stroke engines from 2010–2017 and is not confirmed for Yamaha F40 models.\u003c\/li\u003e\n\u003cli\u003eThe main water pump housing is not included. Inspect the existing housing before installation.\u003c\/li\u003e\n\u003cli\u003eUse the applicable service manual for torque specifications, sealant instructions, and safety procedures.\u003c\/li\u003e\n\u003cli\u003eNever operate an outboard without an adequate cooling-water supply.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMarine replacement parts selected for common service and repair applications.\u003c\/li\u003e\n\u003cli\u003eClear OEM and aftermarket reference information to help customers verify fitment.\u003c\/li\u003e\n\u003cli\u003eProduct support focused on accurate application details and responsible installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723975233851,"sku":"SIE-17KY003","price":25.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_YamahaF40_-_F70_6CJ-W0078-00_-_JLM_MARINE-8289200.jpg?v=1763038993"},{"product_id":"water-pump-repair-kit-fits-yamaha-f40-f70-4-stroke-outboards-replaces-6cj-w0078-00-00-6cj-w0078-01-00","title":"Water Pump Repair Kit Without Housing for Yamaha F70 4-Stroke Outboards – Replaces 6CJ-W0078-01-00","description":"\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis aftermarket \u003cstrong\u003eWater Pump Repair Kit Without Housing\u003c\/strong\u003e is designed for selected Yamaha F70 four-stroke outboards. It provides the service components needed to refresh the water pump assembly while reusing the existing water-pump housing. The kit is associated with Yamaha OEM reference \u003cstrong\u003e6CJ-W0078-01-00\u003c\/strong\u003e.\u003c\/p\u003e\n  \u003cp\u003eThis product is a water-pump repair kit without the complete housing. Confirm the OEM number, engine model, year, and serial or model-code information before ordering.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstallation location:\u003c\/strong\u003e Water pump assembly in the lower unit gearcase.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eService scope:\u003c\/strong\u003e Replacement water-pump wear and sealing components, including the impeller, gaskets, seals, key, and related hardware listed below.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e The complete water-pump housing is not included.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Aftermarket replacement repair kit.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eUse the following references to compare the application shown for this repair kit. Part-number references do not replace confirmation against the engine identification label and service information.\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\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\u003e6CJ-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003ePrimary OEM reference for the later F70 application\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e6CJ-W0078-00-00\u003c\/td\u003e\n          \u003ctd\u003eEarlier OEM reference found for related F70 water-pump repair-kit applications\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSierra\u003c\/td\u003e\n          \u003ctd\u003e18-3494\u003c\/td\u003e\n          \u003ctd\u003eCatalog reference for a Yamaha F70 water-pump kit without housing; application and contents differ by kit reference\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 confirmed catalog relationship for OEM reference \u003cstrong\u003e6CJ-W0078-01-00\u003c\/strong\u003e is the Yamaha F70LA\/F70LA2 four-stroke family shown in later model-year parts catalogs. Because Yamaha applications can vary by year and model code, verify the exact engine identification before installation.\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\u003eCatalog Years\u003c\/th\u003e\n          \u003cth\u003eOEM Part No.\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\u003eF70LA\u003c\/td\u003e\n          \u003ctd\u003e70\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2021–2023\u003c\/td\u003e\n          \u003ctd\u003e6CJ-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003eRepair Kit 2 \/ scheduled service parts\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF70LA2\u003c\/td\u003e\n          \u003ctd\u003e70\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2021–2022\u003c\/td\u003e\n          \u003ctd\u003e6CJ-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003eRepair Kit 2 \/ scheduled service parts\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n  \u003cp\u003eEarlier Yamaha F70LA catalogs list the related OEM reference \u003cstrong\u003e6CJ-W0078-00-00\u003c\/strong\u003e for 2010–2015 applications. Do not assume the earlier and later references are interchangeable without matching the complete engine model and service-part listing.\u003c\/p\u003e\n\n  \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n    \u003cdd\u003eWater pump repair kit without housing\u003c\/dd\u003e\n    \u003cdt\u003eApplication\u003c\/dt\u003e\n    \u003cdd\u003eSelected Yamaha F70 four-stroke outboards\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n    \u003cdd\u003eLower-unit water pump assembly\u003c\/dd\u003e\n    \u003cdt\u003eHousing Included\u003c\/dt\u003e\n    \u003cdd\u003eNo; reuse the existing water-pump housing if serviceable\u003c\/dd\u003e\n    \u003cdt\u003ePrimary OEM Reference\u003c\/dt\u003e\n    \u003cdd\u003e6CJ-W0078-01-00\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cp\u003ePackage contents are intended for the water-pump repair-kit application associated with the reference above. Component part numbers may be supplied as current or superseding versions.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x Water-pump cartridge insert\u003c\/li\u003e\n    \u003cli\u003e1 x Water-pump housing cover\u003c\/li\u003e\n    \u003cli\u003e1 x Water-pump gasket\u003c\/li\u003e\n    \u003cli\u003e1 x Water-pump gasket for the cartridge or wear plate\u003c\/li\u003e\n    \u003cli\u003e1 x Water-pump cartridge or wear plate\u003c\/li\u003e\n    \u003cli\u003e1 x Water-damper seal\u003c\/li\u003e\n    \u003cli\u003e1 x Impeller\u003c\/li\u003e\n    \u003cli\u003e1 x Woodruff key\u003c\/li\u003e\n    \u003cli\u003e2 x Oil seals\u003c\/li\u003e\n    \u003cli\u003e1 x O-ring\u003c\/li\u003e\n    \u003cli\u003e2 x Dowel pins\u003c\/li\u003e\n    \u003cli\u003eWater-pump bolts with washers as required by the applicable kit configuration\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The complete water-pump housing is not included. Compare the old assembly and the supplied components before beginning work.\u003c\/p\u003e\n\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eDisconnect the battery and place the engine in neutral.\u003c\/li\u003e\n    \u003cli\u003ePlace a drain pan under the lower unit and drain the gear lubricant according to the manufacturer's procedure.\u003c\/li\u003e\n    \u003cli\u003eRemove the fasteners securing the lower unit to the midsection and carefully separate the lower unit.\u003c\/li\u003e\n    \u003cli\u003eRemove the existing water-pump cover and housing components.\u003c\/li\u003e\n    \u003cli\u003eRemove the old impeller, key, gaskets, seals, and wear components. Record their orientation before removal.\u003c\/li\u003e\n    \u003cli\u003eClean the driveshaft, water-pump cavity, and all mating surfaces. Remove old gasket material and corrosion without damaging the sealing surfaces.\u003c\/li\u003e\n    \u003cli\u003eInstall the new Woodruff key and impeller in the correct orientation.\u003c\/li\u003e\n    \u003cli\u003eInstall the supplied gaskets, seals, O-ring, cartridge or wear plate, cover, and related hardware. Reuse the housing only if it is not worn, cracked, or damaged.\u003c\/li\u003e\n    \u003cli\u003eReinstall the lower unit, ensuring that the driveshaft and shift shaft align correctly.\u003c\/li\u003e\n    \u003cli\u003eTighten fasteners to the torque values specified in the Yamaha service information for the exact engine model.\u003c\/li\u003e\n    \u003cli\u003eRefill the lower unit with the recommended gear lubricant.\u003c\/li\u003e\n    \u003cli\u003eRun the engine with an appropriate water supply and confirm a strong, continuous tell-tale stream before returning the boat to service.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\u003csummary\u003eDoes this kit fit every Yamaha F70?\u003c\/summary\u003e\u003cp\u003eNo. The documented relationship for OEM reference 6CJ-W0078-01-00 is to selected Yamaha F70LA and F70LA2 four-stroke applications, particularly later model years. Match the complete OEM reference and engine identification before ordering.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eDoes the kit include the complete water-pump housing?\u003c\/summary\u003e\u003cp\u003eNo. This is a repair kit without housing. The existing housing must be reused if it is in serviceable condition.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eIs this the same as a complete water-pump kit with housing?\u003c\/summary\u003e\u003cp\u003eNo. A kit with housing includes a replacement housing assembly, while this product is intended to renew the internal water-pump service components without supplying the complete housing.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water pump?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include a weak or intermittent tell-tale stream, an overheating alarm, elevated engine temperature, or visible cracking, brittleness, or deformation of the impeller.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eHow often should water-pump components be inspected?\u003c\/summary\u003e\u003cp\u003eInspect the impeller and water-pump components according to the engine manufacturer's maintenance schedule. Inspection may need to be more frequent when the engine is used in saltwater, muddy water, or sandy conditions.\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 replacement repair kit. Yamaha and other manufacturer names and part numbers are used only to identify the intended application and reference numbers.\u003c\/p\u003e\u003c\/details\u003e\n\n  \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eConfirm the engine model, year, model code, and OEM reference before ordering.\u003c\/li\u003e\n    \u003cli\u003eDo not install the kit if the supplied components do not match the removed parts or the applicable service information.\u003c\/li\u003e\n    \u003cli\u003eInspect the existing water-pump housing before reuse; replace it if it is worn, cracked, corroded, or otherwise damaged.\u003c\/li\u003e\n    \u003cli\u003eUse the manufacturer's torque values and service procedures for the exact engine.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended for lower-unit and cooling-system service.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — We supply aftermarket components for common marine repair and maintenance applications.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Cataloging\u003c\/strong\u003e — Product references are organized around engine models, OEM numbers, and service applications to support accurate part selection.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eService Support\u003c\/strong\u003e — Compare your original component and engine identification information before installation, and contact support if the application details do not match.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723975266619,"sku":"23KY085","price":21.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23KY0851_6841e1fb-c0bd-4fec-a457-63db649c39d7.jpg?v=1763038997"},{"product_id":"water-pump-impeller-fits-yamaha-40-70-hp-outboards-replaces-yamaha-6h3-44352-00-00-697-44352-00-00-sierra-18-3069","title":"Water Pump Impeller for Yamaha 40–70 HP Outboards – 2-Stroke and 4-Stroke Models","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003ewater pump impeller\u003c\/strong\u003e is a replacement cooling-system component for selected Yamaha outboard engines. The company catalog identifies this product as a single impeller, not a complete water-pump repair kit. It is listed for selected Yamaha 2-stroke and 4-stroke models, including C-, F-, P-, T-, and E-series applications.\u003c\/p\u003e\n\u003cp\u003eThe impeller is designed to circulate cooling water through the outboard water-pump assembly. Replace the impeller when the cooling-water stream is weak or inconsistent, the engine runs hot, or the old vanes show cracking, brittleness, deformation, or wear.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement water-pump impeller for selected Yamaha outboards.\u003c\/li\u003e\n  \u003cli\u003eSold as one impeller only.\u003c\/li\u003e\n  \u003cli\u003eAftermarket replacement, not a Yamaha OEM component.\u003c\/li\u003e\n  \u003cli\u003eConfirm the complete engine model and year range before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number References\u003c\/h2\u003e\n\u003cp\u003eThese manufacturer and aftermarket references are listed for identification and cross-reference purposes. Part-number appearance alone does not replace a model-specific fitment check.\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\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\u003e697-44352-00-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6H3-44352-00-00\u003c\/td\u003e\n        \u003ctd\u003eOEM reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra Marine\u003c\/td\u003e\n        \u003ctd\u003e18-3069\u003c\/td\u003e\n        \u003ctd\u003eAftermarket reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMallory Marine\u003c\/td\u003e\n        \u003ctd\u003e9-45602\u003c\/td\u003e\n        \u003ctd\u003eAftermarket reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Marine\u003c\/td\u003e\n        \u003ctd\u003e47-81423M, 47-97108M\u003c\/td\u003e\n        \u003ctd\u003eAdditional catalog references\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 following applications are taken from the company catalog. Keep horsepower, stroke type, model designation, and stated year range together when checking fitment.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Yamaha Engine Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eModel or Series\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eYear Condition\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\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003eC40, 40V, 40Y, P40\u003c\/td\u003e\n        \u003ctd\u003e40\u003c\/td\u003e\n        \u003ctd\u003eCatalog-listed application; verify model year\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003eT50, P50\u003c\/td\u003e\n        \u003ctd\u003e50\u003c\/td\u003e\n        \u003ctd\u003eP50: 1997 and later\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003eC50, 50G, 50H, Pro50\u003c\/td\u003e\n        \u003ctd\u003e50\u003c\/td\u003e\n        \u003ctd\u003eCatalog-listed application; verify model year\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e55B, C55\u003c\/td\u003e\n        \u003ctd\u003e55\u003c\/td\u003e\n        \u003ctd\u003eC55: 1990–1991\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003eT60, P60\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003eP60: through 1996\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003eE60\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e1997–2000\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003eC60, 60F\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003eCatalog-listed application; verify model year\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e70B, C70\u003c\/td\u003e\n        \u003ctd\u003e70\u003c\/td\u003e\n        \u003ctd\u003eC70: 1997–2003\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eF40A, F40C, F45A\u003c\/td\u003e\n        \u003ctd\u003e40–45\u003c\/td\u003e\n        \u003ctd\u003eCatalog-listed application; verify model year\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eF50A, F50B, F50F, FT50B, FT50C, FT50G\u003c\/td\u003e\n        \u003ctd\u003e50\u003c\/td\u003e\n        \u003ctd\u003eCatalog-listed application; verify model year\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eF60A, F60C, FT60B, FT60D\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003eCatalog-listed application; verify model year\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eF70A\u003c\/td\u003e\n        \u003ctd\u003e70\u003c\/td\u003e\n        \u003ctd\u003eCatalog-listed application; verify model year\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eOutboard water-pump impeller\u003c\/dd\u003e\n  \u003cdt\u003eProduct Configuration\u003c\/dt\u003e\n  \u003cdd\u003eSingle replacement impeller\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSelected Yamaha 2-stroke and 4-stroke outboard water-pump assemblies\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Status\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement; not an OEM component\u003c\/dd\u003e\n  \u003cdt\u003eIncluded Hardware\u003c\/dt\u003e\n  \u003cdd\u003eNo gasket, key, wear plate, O-ring, pump housing, or other water-pump components are specified as included\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\u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e water-pump housing, gaskets, O-rings, wear plate, impeller key, bolts, or complete repair-kit components unless separately stated in the order details.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eConfirm the engine model, stroke type, and applicable year range before installation.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery and follow the manufacturer’s service procedure for the specific outboard.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit and water-pump cover to access the impeller.\u003c\/li\u003e\n  \u003cli\u003eInspect the pump housing, wear plate, key, seals, and gaskets for damage or wear.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller and retain the original key only if it is serviceable and the replacement procedure permits reuse.\u003c\/li\u003e\n  \u003cli\u003eClean the mating surfaces and remove old gasket material and debris.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement impeller with the key correctly seated. Follow the engine manufacturer’s specified vane direction and shaft-rotation procedure.\u003c\/li\u003e\n  \u003cli\u003eReassemble the pump cover and lower unit using appropriate serviceable gaskets and hardware.\u003c\/li\u003e\n  \u003cli\u003eRun the engine only in water or with an appropriate flushing device, then confirm a steady cooling-water tell-tale stream.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if the impeller needs replacing?\u003c\/summary\u003e\n  \u003cp\u003eTypical signs include overheating, a weak or intermittent tell-tale stream, reduced cooling-water flow, or impeller vanes that are cracked, brittle, permanently bent, or missing. Inspect the entire water-pump assembly whenever the impeller is replaced.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this listing include a key or gasket?\u003c\/summary\u003e\n  \u003cp\u003eNo. The company record identifies this product as a single impeller. A key, gasket, wear plate, O-ring, pump housing, and other repair-kit components are not included unless specifically stated in the order details.\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 Yamaha, Sierra Marine, Mallory Marine, and Mercury Marine numbers shown on this page are reference numbers used for identification and fitment comparison.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I use the horsepower range alone to confirm fitment?\u003c\/summary\u003e\n  \u003cp\u003eNo. The same horsepower rating can cover different engine families and water-pump configurations. Match the complete model designation, stroke type, and applicable year condition before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShould the new impeller vanes be curved?\u003c\/summary\u003e\n  \u003cp\u003eFlexible impeller vanes may appear straight or may take their working shape after installation in the pump housing. Install the impeller according to the service instructions for the specific engine and do not run it dry.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the complete engine model and year range against the fitment information before purchase.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the engine without an adequate water supply or suitable flushing equipment.\u003c\/li\u003e\n  \u003cli\u003eInspect the housing, wear plate, key, seals, and gaskets during installation and replace worn components as needed.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended if you are unfamiliar with outboard lower-unit or water-pump service.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — Replacement components for common outboard and marine service applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment-Focused Listings\u003c\/strong\u003e — Product references and model information are provided to support part-number and application checks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePractical Service Support\u003c\/strong\u003e — Clear product details help customers identify the correct replacement before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723975299387,"sku":"17IY002","price":15.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_for_Yamaha_40_50_55_60_70_HP__6H3-44352-01_-_JLM_MARINE-8288624.png?v=1763039000"},{"product_id":"water-pump-impeller-kit-fits-yamaha-f40-f70-4-stroke-replaces-6cj-w0078-00-6cj-w0078-01","title":"Water Pump Repair Kit Without Housing for Yamaha F70 4-Stroke – Replaces 6CJ-W0078-00-00, 6CJ-W0078-01-00","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 { 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 aftermarket \u003cstrong\u003eWater Pump Repair Kit Without Housing\u003c\/strong\u003e is designed for Yamaha F70A 4-Stroke outboards. It services the water pump assembly in the lower unit and is supplied without the complete water pump housing assembly.\u003c\/p\u003e\n\u003cp\u003eThe kit references Yamaha OEM part numbers \u003cstrong\u003e6CJ-W0078-00-00\u003c\/strong\u003e and \u003cstrong\u003e6CJ-W0078-01-00\u003c\/strong\u003e. The aftermarket reference listed for this application is \u003cstrong\u003eSierra 18-3494\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFor Yamaha F70A 4-Stroke outboards, with catalog fitment shown for 2010–2017 models.\u003c\/li\u003e\n  \u003cli\u003eWater pump service kit for lower-unit cooling-system maintenance.\u003c\/li\u003e\n  \u003cli\u003eWithout the complete water pump housing assembly.\u003c\/li\u003e\n  \u003cli\u003eIncludes the principal water pump wear, sealing and installation components listed below.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number References\u003c\/h2\u003e\n\u003cp\u003eUse the following references when comparing your existing water pump kit and engine parts diagram.\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 or source\u003c\/th\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003cth\u003eApplication or note\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6CJ-W0078-00-00\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\u003e6CJ-W0078-01-00\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\u003e18-3494\u003c\/td\u003e\n\u003ctd\u003eAftermarket water pump kit without housing\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\u003eConfirm the complete model designation and year of your outboard before ordering. The available catalog relationship for these kit references is limited to the Yamaha F70A 4-Stroke application shown below.\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\u003eYears shown in catalog\u003c\/th\u003e\n\u003cth\u003eOEM kit references\u003c\/th\u003e\n\u003cth\u003eHousing condition\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003eF70A\u003c\/td\u003e\n\u003ctd\u003e70 HP\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2010–2017\u003c\/td\u003e\n\u003ctd\u003e6CJ-W0078-00-00; 6CJ-W0078-01-00\u003c\/td\u003e\n\u003ctd\u003eWithout complete housing assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct type\u003c\/dt\u003e\n\u003cdd\u003eWater pump repair kit\u003c\/dd\u003e\n  \u003cdt\u003eHousing configuration\u003c\/dt\u003e\n\u003cdd\u003eWithout complete water pump housing assembly\u003c\/dd\u003e\n  \u003cdt\u003eInstallation location\u003c\/dt\u003e\n\u003cdd\u003eLower unit \/ gearcase water pump\u003c\/dd\u003e\n  \u003cdt\u003eBrand application\u003c\/dt\u003e\n\u003cdd\u003eYamaha outboard\u003c\/dd\u003e\n  \u003cdt\u003eEngine application\u003c\/dt\u003e\n\u003cdd\u003eF70A 4-Stroke\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket reference\u003c\/dt\u003e\n\u003cdd\u003eSierra 18-3494\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cp\u003eThe service-kit component references associated with this application include:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Water pump cover \/ cover, pump housing — 63D-44312-00-00\u003c\/li\u003e\n  \u003cli\u003e1 x Insert cup \/ cartridge insert — 63D-44322-00-00\u003c\/li\u003e\n  \u003cli\u003e1 x Water damper seal — 663-44366-00-00 or 663-44366-01-00\u003c\/li\u003e\n  \u003cli\u003eWater pump gaskets — 6CJ-44315-00-00, 6CJ-44316-00-00 and 6CJ-44324-00-00\u003c\/li\u003e\n  \u003cli\u003e1 x Wear plate \/ outer cartridge plate — 6CJ-44323-00-00\u003c\/li\u003e\n  \u003cli\u003e1 x Impeller — 6H3-44352-00-00\u003c\/li\u003e\n  \u003cli\u003eWoodruff key — 90280-03M03-00\u003c\/li\u003e\n  \u003cli\u003eOil seal(s) — 93101-23070-00\u003c\/li\u003e\n  \u003cli\u003eO-ring — 93210-46044-00\u003c\/li\u003e\n  \u003cli\u003eDowel pins — 93604-10M03-00\u003c\/li\u003e\n  \u003cli\u003eBolts with washers — 90119-08M14-00 and 90119-08M33-00\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This is a kit without the complete water pump housing assembly. Compare the included components with your original parts and the engine diagram before installation.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and place the outboard in neutral before beginning service.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit according to the Yamaha service procedure for your exact F70A model and year.\u003c\/li\u003e\n  \u003cli\u003eSecure the gearcase on a suitable work surface and remove the water pump cover fasteners.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller, gaskets, seals, wear plate and related water-pump components.\u003c\/li\u003e\n  \u003cli\u003eClean the mating surfaces and inspect the housing, driveshaft, keyway and fasteners for damage or corrosion.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement components in the correct order. Seat the Woodruff key securely and engage the impeller with the driveshaft.\u003c\/li\u003e\n  \u003cli\u003eFollow the manufacturer's specifications for sealant, lubrication, bolt tightening and torque.\u003c\/li\u003e\n  \u003cli\u003eReinstall the water pump cover and lower unit.\u003c\/li\u003e\n  \u003cli\u003eRun the engine only in water or with an appropriate flushing device, then verify a steady tell-tale stream and normal operating temperature.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich Yamaha engines does this kit fit?\u003c\/summary\u003e\u003cp\u003eThe documented application is the Yamaha F70A 70 HP 4-Stroke outboard, with catalog fitment shown for 2010–2017 models. Confirm the exact model suffix, year and parts diagram before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit include the complete water pump housing?\u003c\/summary\u003e\u003cp\u003eNo. This product is the water pump repair kit without the complete housing assembly. It includes service components such as the cover, insert, impeller, gaskets, seals, plate, key and related hardware listed on this page.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat do the two Yamaha part numbers mean?\u003c\/summary\u003e\u003cp\u003e6CJ-W0078-00-00 and 6CJ-W0078-01-00 are the Yamaha kit references associated with this product listing. Match the number, engine model and year against your original part or parts diagram before purchase.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a water pump problem?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include a weak or missing tell-tale stream, overheating warnings or abnormal operating temperature. Stop the engine and inspect the cooling system promptly if these symptoms occur.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\u003cp\u003eReplacement timing depends on operating hours, storage conditions and water conditions. Follow the maintenance schedule for your exact Yamaha engine and inspect the impeller whenever cooling performance declines or the lower unit is serviced.\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 replacement kit identified by the Yamaha OEM reference numbers and the Sierra 18-3494 aftermarket reference.\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 designation, year and original part references before ordering.\u003c\/li\u003e\n  \u003cli\u003eDo not assume fitment from horsepower alone; model suffix and year conditions must match.\u003c\/li\u003e\n  \u003cli\u003eThis kit is supplied without the complete water pump housing assembly.\u003c\/li\u003e\n  \u003cli\u003eUse the manufacturer's service instructions and torque specifications for installation.\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\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine replacement parts\u003c\/strong\u003e — Practical service components for routine outboard maintenance and repair.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-focused listings\u003c\/strong\u003e — Product references and fitment conditions are provided to help you compare your engine and original part.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eService support\u003c\/strong\u003e — Always confirm the model, year and component configuration before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723975692603,"sku":"17KY003","price":40.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Yamaha_70HP_F70A_____6CJ-W0078-00-00_6CJ-W0078-01-00_-_JLM_MARINE-8286384.jpg?v=1763039004"}],"url":"https:\/\/seasierra.com\/collections\/yamaha-40-70hp-4-stroke-outboard-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}