{"title":"Kohler 30HP Marine Outboard Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px;border:1px solid #e5e7eb;border-radius:8px;max-width:1000px;margin:0 auto 20px auto;\"\u003e\n  \u003cp\u003eThis page supports Kohler 30HP outboard engines and helps you quickly find compatible parts and service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse our main Kohler parts collection to compare options, then scroll to the bottom of this page to start browsing parts for this engine. On the collection pages, 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\/service-maintenance-kits\" style=\"display:inline-block;padding:10px 14px;background:#0369a1;color:#fff;text-decoration:none;border-radius:6px;\"\u003eBrowse All Kohler Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width:1000px;margin:0 auto 24px auto;\"\u003e\n  \u003ch2\u003eHow to Identify Your 30HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eNameplate\/serial plate: Typically found on the transom bracket or swivel bracket. Record the full model code and serial number.\u003c\/li\u003e\n    \u003cli\u003eModel code details: Suffix characters often indicate shaft length (e.g., S\/15\", L\/20\"), start\/charging (manual vs. electric), and control type (tiller vs. remote).\u003c\/li\u003e\n    \u003cli\u003ePlatform clues: Carburetor bodies and an oil‑injection tank suggest a 2‑stroke; a visible engine oil dipstick and oil filter indicate a 4‑stroke.\u003c\/li\u003e\n    \u003cli\u003eProp and gearcase: Note propeller size\/pitch and gearcase style (standard vs. high-thrust) to match seals, impellers, and props correctly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"max-width:1000px;margin:0 auto 24px auto;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n  \u003ch3\u003e30HP Legacy 2‑Stroke (Carbureted\/Oil‑Injected)\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 #e5e7eb;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eInline 2‑ or 3‑cylinder 2‑stroke, carbureted; mechanical oil injection or premix depending on variant.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eGeneral 30HP 2‑stroke outboards (short\/long shaft; tiller or remote).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eLight weight, simple service, strong holeshot.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eConfirm whether your engine uses premix or oil injection before ordering fuel\/oil system parts. Impeller and gearcase seals are routine wear items.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003e30HP 4‑Stroke (Carb\/EFI)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-top:14px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eConfiguration\u003c\/td\u003e\n        \u003ctd\u003eInline 3‑cylinder 4‑stroke, carb or EFI depending on year; separate engine oil and filter.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCommon Models\u003c\/td\u003e\n        \u003ctd\u003eGeneral 30HP 4‑stroke outboards (short\/long shaft; tiller or remote).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAdvantages\u003c\/td\u003e\n        \u003ctd\u003eQuiet operation, improved fuel economy, low emissions.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eNotes\u003c\/td\u003e\n        \u003ctd\u003eMatch service parts by serial\/model code. Keep up with oil\/filter service and cooling‑system maintenance to extend life.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"max-width:1000px;margin:0 auto 24px auto;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for small outboards. Always follow the official service manual 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 #e5e7eb;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eInspect for water intrusion\/metal flakes; replace drain seals as needed.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eCheck gap and color; replace if fouled, worn, or after extended storage.\u003c\/td\u003e\n        \u003ctd\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\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eReplace more often with stale\/contaminated fuel; verify flow direction.\u003c\/td\u003e\n        \u003ctd\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\u003eWater pump impeller\u003c\/td\u003e\n        \u003ctd\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd\u003eReplace sooner if weak tell‑tale or overheating; inspect housing\/plate.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/water-pump-impeller-rebuild-kits\"\u003eWater Pump Impeller Rebuild Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eAnodes (zincs)\u003c\/td\u003e\n        \u003ctd\u003eInspect every 50 hours; replace when 50% consumed\u003c\/td\u003e\n        \u003ctd\u003eUse the correct alloy for fresh\/brackish\/salt water.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003e2‑Stroke oiling (if applicable)\u003c\/td\u003e\n        \u003ctd\u003eEach use \/ seasonal\u003c\/td\u003e\n        \u003ctd\u003ePremix at the specified ratio or service oil‑injection tank\/lines; prime after service.\u003c\/td\u003e\n        \u003ctd\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cp style=\"font-size:12px;color:#6b7280;\"\u003e*Intervals are typical for recreational use. Harsh duty (heavy load, high heat, frequent trolling) may require shorter intervals.\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"max-width:1000px;margin:0 auto 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\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System — \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\"\u003eWater Pumps\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/impellers\"\u003eImpellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System — \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-pumps\"\u003eFuel Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical — \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/starters\"\u003eStarters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eLower Unit \u0026amp; Propulsion — \u003ca href=\"https:\/\/seasierra.com\/collections\/lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection — \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"max-width:1000px;margin:0 auto 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 #e5e7eb;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWeak tell‑tale or overheat alarm\u003c\/td\u003e\n        \u003ctd\u003eInspect intake screens for debris; verify strong water stream; check impeller age.\u003c\/td\u003e\n        \u003ctd\u003eWater pump impeller kit, pump housing\/plate, intake screen, thermostat.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd\u003eCheck prop damage\/cavitation; verify fresh fuel and clean filter; inspect plugs.\u003c\/td\u003e\n        \u003ctd\u003ePropeller, fuel filter, spark plugs, fuel pump.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd\u003eConfirm choke\/primer operation; look for fouled plugs; check for air leaks in fuel line.\u003c\/td\u003e\n        \u003ctd\u003eSpark plugs, fuel line\/connectors, primer bulb, carb kits or injector service (model‑dependent).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGearcase noise or milky gear oil\u003c\/td\u003e\n        \u003ctd\u003eInspect drain screw gaskets; check for fishing line on prop shaft; verify correct oil level.\u003c\/td\u003e\n        \u003ctd\u003eLower unit seal kit, drain screw seals, prop shaft seals, gear oil.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eExcessive smoke (2‑stroke)\u003c\/td\u003e\n        \u003ctd\u003eConfirm correct premix ratio\/oil type; ensure thermostat closes properly; avoid extended cold idling.\u003c\/td\u003e\n        \u003ctd\u003eThermostat, spark plugs, fuel\/oil hoses, reed\/airbox service parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"max-width:1000px;margin:0 auto 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 wear items (impellers, anodes, plugs) are shared across years, but many components differ by model code, shaft length, and whether the engine is 2‑stroke or 4‑stroke. Always match by model\/serial and confirm key dimensions before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eAnnually or every 100 hours is typical for recreational use. Replace sooner if the tell‑tale weakens, the engine overheats, or after sandy\/silty operation that can wear the vanes.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eChange gear oil every 100 hours or at least once per season. Inspect for water intrusion (milky oil) or metal particles and replace drain screw seals as needed.\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 full model and serial number, shaft length (S\/L\/XL), start\/charging type (manual\/electric), control type (tiller\/remote), and whether the engine is 2‑stroke or 4‑stroke. A photo of the nameplate and the part you are replacing is very helpful.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px;border:1px solid #e5e7eb;border-radius:8px;max-width:1000px;margin:0 auto;\"\u003e\n  \u003cp\u003eReady to find parts by category and narrow by horsepower and model? Browse our collections and use Filter \u0026amp; Sort for faster results.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block;margin-top:8px;padding:10px 14px;background:#0369a1;color:#fff;text-decoration:none;border-radius:6px;\"\u003eBrowse Kohler Parts \u0026amp; Service Items\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px;color:#374151;font-size:13px;\"\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":"raw-water-pump-impeller-fits-yanmar-2gm-3gm-series-replaces-128296-42070-124223-42091","title":"Raw Water Pump Impeller – Fits Yanmar 2GM, 3GM, 2GM20F, 3GM30F and 3HM Series (Replaces 128296-42070, 124223-42091)","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){\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\u003eraw water pump impeller\u003c\/strong\u003e is designed as a replacement for selected Yanmar marine engines, including the 2GM, 3GM, 2GM20F, 3GM30F and 3HM series. It replaces commonly referenced Yanmar impeller numbers \u003cstrong\u003e128296-42070\u003c\/strong\u003e and \u003cstrong\u003e124223-42091\u003c\/strong\u003e. Always compare the impeller dimensions, drive style and existing part number before ordering.\u003c\/p\u003e\n  \u003cp\u003eThe impeller uses a keyed drive for positive engagement with the pump shaft. It is supplied as a single replacement impeller; a pump-cover gasket, lubricant or other installation accessories are not included unless specifically stated in the order or packaging.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eFlexible impeller for marine raw-water cooling pump applications.\u003c\/li\u003e\n    \u003cli\u003eKey-drive insert for secure shaft engagement.\u003c\/li\u003e\n    \u003cli\u003eDirect replacement design for compatible pump assemblies.\u003c\/li\u003e\n    \u003cli\u003eSuitable for the specific Yanmar applications listed below when the part number and dimensions match.\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 references are listed as OEM or aftermarket cross-reference numbers for the compatible impeller application. Cross-reference numbers alone do not replace checking the engine model and pump configuration.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYanmar\u003c\/td\u003e\n\u003ctd\u003e124223-42091\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYanmar\u003c\/td\u003e\n\u003ctd\u003e124223-42092\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYanmar\u003c\/td\u003e\n\u003ctd\u003e128296-42070\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYanmar\u003c\/td\u003e\n\u003ctd\u003e128620-42200\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eJabsco\u003c\/td\u003e\n\u003ctd\u003e22799-0001\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\u003eUse the table below as a fitment guide, then confirm the engine identification plate, pump configuration, existing impeller dimensions and part number before installation. Model families can contain variations, so a model name alone is not sufficient for final verification.\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\u003eOEM Part No.\u003c\/th\u003e\n          \u003cth\u003eFitment Notes\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYanmar\u003c\/td\u003e\n\u003ctd\u003e2GM series\u003c\/td\u003e\n\u003ctd\u003e128296-42070\u003c\/td\u003e\n\u003ctd\u003eConfirm pump configuration and dimensions.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYanmar\u003c\/td\u003e\n\u003ctd\u003e3GM series\u003c\/td\u003e\n\u003ctd\u003e128296-42070\u003c\/td\u003e\n\u003ctd\u003eConfirm pump configuration and dimensions.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYanmar\u003c\/td\u003e\n\u003ctd\u003e2GM20F\u003c\/td\u003e\n\u003ctd\u003e124223-42091 \/ 124223-42092\u003c\/td\u003e\n\u003ctd\u003eVerify the existing impeller number before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYanmar\u003c\/td\u003e\n\u003ctd\u003e3GM30F\u003c\/td\u003e\n\u003ctd\u003e124223-42091 \/ 124223-42092\u003c\/td\u003e\n\u003ctd\u003eVerify the existing impeller number before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003eYanmar\u003c\/td\u003e\n\u003ctd\u003e3HM and 3HM35 series\u003c\/td\u003e\n\u003ctd\u003e124223-42091 \/ 128296-42070\u003c\/td\u003e\n\u003ctd\u003eConfirm the pump and shaft configuration.\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 compatibility information above applies only when the engine uses the corresponding raw-water pump and impeller dimensions. Do not rely on the engine family name alone if the replacement impeller differs from the original.\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\u003eMarine raw water pump impeller\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n    \u003cdd\u003eDirect replacement for compatible pump assemblies\u003c\/dd\u003e\n    \u003cdt\u003eDrive Style\u003c\/dt\u003e\n    \u003cdd\u003eKey drive\u003c\/dd\u003e\n    \u003cdt\u003eImpeller Diameter\u003c\/dt\u003e\n    \u003cdd\u003e51 mm (approximately 2 in)\u003c\/dd\u003e\n    \u003cdt\u003eImpeller Width\u003c\/dt\u003e\n    \u003cdd\u003e22 mm (approximately 7\/8 in)\u003c\/dd\u003e\n    \u003cdt\u003eShaft Diameter\u003c\/dt\u003e\n    \u003cdd\u003e12.7 mm\u003c\/dd\u003e\n    \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n    \u003cdd\u003e6\u003c\/dd\u003e\n    \u003cdt\u003eKey Width\u003c\/dt\u003e\n    \u003cdd\u003eApproximately 5.25 mm\u003c\/dd\u003e\n    \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n    \u003cdd\u003eFlexible marine impeller material; material specification may vary by supplied manufacturer\u003c\/dd\u003e\n    \u003cdt\u003eApproximate Weight\u003c\/dt\u003e\n    \u003cdd\u003e0.15 lb (0.068 kg)\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 × Flexible raw water pump impeller\u003c\/li\u003e\n    \u003cli\u003eGasket not included\u003c\/li\u003e\n    \u003cli\u003eLubricant not included\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\u003eClose the raw-water seacock to prevent water from entering the vessel.\u003c\/li\u003e\n    \u003cli\u003eAccess the raw-water pump housing and remove the cover-plate screws.\u003c\/li\u003e\n    \u003cli\u003eCarefully remove the old impeller using an impeller puller or suitable hand tools. Avoid scoring the pump housing.\u003c\/li\u003e\n    \u003cli\u003eClean the pump housing and remove any damaged blade fragments or debris.\u003c\/li\u003e\n    \u003cli\u003eApply a small amount of lubricant approved for the impeller material and marine raw-water pump use. Do not assume lubricant is included.\u003c\/li\u003e\n    \u003cli\u003eInstall the new impeller with the key correctly engaged. Follow the pump manufacturer’s guidance for blade orientation and rotation.\u003c\/li\u003e\n    \u003cli\u003eReplace the cover gasket if the old gasket is damaged or if the pump manufacturer requires a new gasket. A gasket is not included with this impeller.\u003c\/li\u003e\n    \u003cli\u003eReinstall the cover plate and tighten the screws evenly.\u003c\/li\u003e\n    \u003cli\u003eOpen the raw-water seacock.\u003c\/li\u003e\n    \u003cli\u003eStart the engine and immediately check for proper cooling-water flow, leaks and abnormal operating temperature.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\u003csummary\u003eHow do I confirm this impeller fits my engine?\u003c\/summary\u003e\u003cp\u003eCompare the existing impeller’s part number, diameter, width, shaft diameter, blade count and key-drive arrangement with the specifications on this page. Confirm that your engine and pump appear in the compatibility table. If any measurement or drive detail differs, do not install the part without confirming compatibility through the pump or engine service information.\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 reduced water flow from the exhaust outlet, higher-than-normal engine temperature, an overheating alarm or visible cracking, hardening, missing blades and other signs of wear. Inspect the pump whenever the cooling-water flow decreases.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eHow often should I replace the impeller?\u003c\/summary\u003e\u003cp\u003eRaw-water impellers are preventive-maintenance parts. Many marine service schedules call for annual inspection and replacement at an interval appropriate to operating hours and conditions. Follow the engine and pump manufacturer’s service schedule, and replace the impeller sooner if it shows damage or has run dry.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eDoes this product include a gasket or lubricant?\u003c\/summary\u003e\u003cp\u003eNo. This listing is for one replacement impeller. A pump-cover gasket and lubricant are not included unless they are specifically identified in the order or supplied packaging.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eIs this an OEM part or an aftermarket replacement?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement impeller, not a Yanmar-branded OEM component. The listed OEM and aftermarket numbers are provided as cross-reference information for fitment checking.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eCan I run the pump without water after installation?\u003c\/summary\u003e\u003cp\u003eNo. Avoid running a flexible impeller dry. Open the seacock and ensure the pump is properly lubricated and primed according to the engine or pump manufacturer’s instructions before operating the engine.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat are the shipping speed and cost?\u003c\/summary\u003e\u003cp\u003eStandard shipping is free to most regions. Typical transit times are 5–15 days, while expedited options, when available for the destination, are shown at checkout.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eReturns are subject to the applicable store policy and normally require the item to be unused and in its original condition. Contact support with your order details if the item arrives damaged or if you identify a manufacturing issue.\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\u003eClose the raw-water seacock before opening the pump housing.\u003c\/li\u003e\n    \u003cli\u003eVerify the part number, dimensions and key-drive arrangement against the removed impeller.\u003c\/li\u003e\n    \u003cli\u003eDo not operate a flexible impeller dry.\u003c\/li\u003e\n    \u003cli\u003eAfter installation, check cooling-water flow, pump sealing and engine temperature immediately.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended when the pump or cooling system is difficult to access.\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 maintenance and repair applications.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGlobal Fulfillment\u003c\/strong\u003e — Standard delivery is available to most regions, with delivery options shown at checkout.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFitment-Focused Support\u003c\/strong\u003e — Use the part-number and dimension information to help verify compatibility before ordering.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723793928507,"sku":"c2JU6Vr51oE","price":24.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/c2JU6Vr51oE.png?v=1763031942"}],"url":"https:\/\/seasierra.com\/collections\/kohler-30hp-marine-outboard-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}