{"title":"Oberdorfer Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px 0;\"\u003e\n  \u003cp\u003e\n    This page focuses on Oberdorfer marine engine pumps and service parts—helping you identify compatible components, follow routine maintenance, and troubleshoot common cooling and transfer pump issues. You can also browse our main Water Pumps collection. Scroll to the bottom of the page to start browsing parts, and on the collection page use the Filter \u0026amp; Sort controls to narrow results by flow rate, drive type, and part category.\n  \u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\" style=\"display:inline-block;padding:10px 14px;border:1px solid #0b5;border-radius:6px;text-decoration:none;\"\u003eBrowse Water Pumps\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eHow to Identify Your Pump Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eNameplate\/serial plate: Look for a stamped or engraved tag on the pump body or mounting flange. It typically includes the model family (for example, N202M or N992) and build suffixes.\u003c\/li\u003e\n    \u003cli\u003eReading the code and suffix: Suffixes can indicate drive type (shaft\/electric), rotation, and port orientation. Example variants you may encounter include N202M-11, N202M-16, or N202M-908.\u003c\/li\u003e\n    \u003cli\u003eRotation and arrow: Many Oberdorfer raw-water pumps have a rotation arrow on the cover; match the impeller and cam orientation accordingly.\u003c\/li\u003e\n    \u003cli\u003eApplication clues: Rubber impeller pumps are commonly used for raw-water engine\/generator cooling, while bronze gear pumps are often used for fuel or oil transfer.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003ePump Platform Overview\u003c\/h2\u003e\n\n  \u003ch3\u003eRubber Impeller Raw-Water Pumps (e.g., N202M series)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;max-width:900px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eBronze housing, rubber impeller with cam; commonly shaft-driven; used for raw-water cooling on gasoline\/diesel engines and generators.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eN202M family; variants such as N202M-11, N202M-16, N202M-908 are typical examples found in service.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eSelf-priming, compact, proven for marine cooling duty; wide availability of impellers and spares.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eService impeller annually or every 100–200 hours; verify rotation and cam orientation; inspect cover plate and wear surfaces during each service.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eBronze Gear Pumps (e.g., N992 series)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;max-width:900px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eBronze gear-type positive displacement pump for steady transfer of fuel or lubricants.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eN992 family (e.g., N992R) used in marine transfer and auxiliary applications.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eConsistent flow and pressure for transfer duties; durable bronze construction.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eNot intended for abrasive or debris-laden fluids; ensure correct relief\/ bypass provisions and compatible hose materials.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines. Always follow the official service manual and your vessel manufacturer’s recommendations.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;max-width:900px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;padding:8px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eRaw-water impeller (rubber)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e12–24 months or 100–200 hrs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eReplace sooner after dry-run, overheating, or visible vane set.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\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 style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePump cover gasket \/ wear plate\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect each impeller service\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eReplace if scored, warped, or leaking to maintain prime and output.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/gaskets\"\u003eGaskets\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eShaft seal (pump)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eLook for salt crust at weep hole or drips behind pulley; replace if leaking.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/oil-seals\"\u003eOil Seals\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePump bearings\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCheck for play or noise; replace during seal\/shaft service as needed.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bearings\"\u003eBearings\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eRaw-water hoses \u0026amp; clamps\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEvery 2–3 years or at cracks\/bulges\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eReplace softened, cracked, or kinked hose; verify proper suction hose rating.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/hoses\"\u003eHoses\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAnodes (engine\/raw-water system)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect quarterly\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eMaintain sacrificial protection in salt\/brackish water to prevent corrosion.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eFuel filter (genset\/engine)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e200–300 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eProtect transfer and lift pumps from contamination; keep spares onboard.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eSpark plugs (gasoline engines)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePer engine manufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eUse correct heat range and gap; replace if fouled or worn.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark plug\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRaw-Water Pumps \u0026amp; Accessories — \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\"\u003eWater pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eImpellers \u0026amp; Wear Parts — \u003ca href=\"https:\/\/seasierra.com\/collections\/impellers\"\u003eImpellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGaskets \u0026amp; Sealing — \u003ca href=\"https:\/\/seasierra.com\/collections\/gaskets\"\u003eGaskets\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eHoses \u0026amp; Plumbing — \u003ca href=\"https:\/\/seasierra.com\/collections\/hoses\"\u003eHoses\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eBearings \u0026amp; Rotating Components — \u003ca href=\"https:\/\/seasierra.com\/collections\/bearings\"\u003eBearings\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection — \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System Filtration — \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;max-width:900px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ccc;padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWeak water stream or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect intake screen\/strainer for debris; verify impeller condition; check for suction leaks or collapsed hose.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWater pump kit, impeller, cover gasket, hoses, intake screen\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eLeak at pump or salt crust at weep hole\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCheck cover O-ring\/gasket; inspect shaft seal and shaft wear; confirm fastener torque.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eGaskets, oil seal, wear plate\/cover, fasteners\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eNoise or vibration from pump\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCheck bearing play and alignment; inspect cam\/impeller for damage; verify mounting bracket integrity.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eBearings, impeller, cam, mounting hardware\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eHard starting\/rough idle (genset\/engine)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eReplace\/inspect fuel filter; check for air leaks on suction side; verify clean fuel and proper hose routing.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eFuel filters, fuel hose, clamps\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different Oberdorfer pump variants?\u003c\/summary\u003e\n    \u003cp\u003eMany spares interchange within the same pump family, but rotation, drive type, and port orientation can change the cover, cam, or impeller used. Always confirm the full model code on the nameplate 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\u003eAs a preventative measure, replace the rubber impeller every 12–24 months (or 100–200 hours), and immediately after any dry-run or overheating incident. Inspect vanes for set, cracks, or missing tips.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I service the pump seals and bearings?\u003c\/summary\u003e\n    \u003cp\u003eInspect annually for leaks, salt crusting, or bearing play. Replace seals and bearings whenever leakage or noise is detected, or proactively during major cooling system overhauls.\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\u003eProvide the complete pump model code and suffix, a clear photo of the nameplate and cover, rotation arrow (if present), drive type, and the engine\/generator model it’s installed on.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px 0;\"\u003e\n  \u003cp\u003eReady to find parts? Browse our Water Pumps collection and use the filters to narrow by category and specifications.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\" style=\"display:inline-block;padding:10px 14px;border:1px solid #0b5;border-radius:6px;text-decoration:none;\"\u003eBrowse Water Pumps\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":"impeller-repair-kit-fits-oberdorfer-202m-11-n202m-series-replaces-onan-132-0277-westerbeke-17556","title":"Impeller Repair Kit – Fits Oberdorfer 202M-11 \u0026 N202M Series (Replaces Onan 132-0277, Westerbeke 17556)","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;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eImpeller Repair Kit – Fits Oberdorfer 202M-11 \u0026amp; N202M Series Pumps (Replaces Onan 132-0277, Westerbeke 17556)\u003c\/strong\u003e contains the necessary components to service Oberdorfer 202M-11, N202M-03, N202M-7, N202M-11, N202M-15, and N202M-16 pumps. These pumps are commonly found on a variety of marine engines and generators for raw water cooling applications.\u003c\/p\u003e\n\u003cp\u003eThis kit provides direct replacements for Onan 132-0277\/132-0316, Westerbeke 17556, Universal 200209\/295628, and Globe 815 part numbers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Designed as a direct replacement for listed pump models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpeller Material:\u003c\/strong\u003e Made from durable neoprene for reliable performance in water and coolant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEssential Components:\u003c\/strong\u003e Includes the impeller, gasket, and O-ring required for a standard service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket brands.\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\u003ePart Number\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\u003eOnan\u003c\/td\u003e\n        \u003ctd\u003e132-0277\u003c\/td\u003e\n        \u003ctd\u003eKit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOnan\u003c\/td\u003e\n        \u003ctd\u003e132-0316\u003c\/td\u003e\n        \u003ctd\u003eImpeller Only\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eOnan\u003c\/td\u003e\n        \u003ctd\u003e132-0315\u003c\/td\u003e\n        \u003ctd\u003eGasket Only\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eWesterbeke\u003c\/td\u003e\n        \u003ctd\u003e17556\u003c\/td\u003e\n        \u003ctd\u003eKit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eUniversal\u003c\/td\u003e\n        \u003ctd\u003e200209\u003c\/td\u003e\n        \u003ctd\u003eKit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eUniversal\u003c\/td\u003e\n        \u003ctd\u003e295628\u003c\/td\u003e\n        \u003ctd\u003eKit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGlobe\u003c\/td\u003e\n        \u003ctd\u003e815\u003c\/td\u003e\n        \u003ctd\u003eKit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOberdorfer\u003c\/td\u003e\n        \u003ctd\u003e6593\u003c\/td\u003e\n        \u003ctd\u003eImpeller Only\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOberdorfer\u003c\/td\u003e\n        \u003ctd\u003e6599\u003c\/td\u003e\n        \u003ctd\u003eGasket Only\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\u003eConfirm your engine model or pump model in the tables below.\u003c\/p\u003e\n\u003cp\u003eThis kit is compatible with specific Onan generator models that use the corresponding service pumps.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Onan Generator Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated KW\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOnan\u003c\/td\u003e\n        \u003ctd\u003eMDKC\u003c\/td\u003e\n        \u003ctd\u003e3.5-4.0 KW\u003c\/td\u003e\n        \u003ctd\u003e132-0277\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOnan\u003c\/td\u003e\n        \u003ctd\u003eMDKD\u003c\/td\u003e\n        \u003ctd\u003e6.5-8.0 KW\u003c\/td\u003e\n        \u003ctd\u003e132-0277\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eIt is designed to service the following Oberdorfer pumps directly.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Oberdorfer Pump 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\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOberdorfer\u003c\/td\u003e\n        \u003ctd\u003e202M-11\u003c\/td\u003e\n        \u003ctd\u003eOB6593\u003c\/td\u003e\n        \u003ctd\u003eImpeller only\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOberdorfer\u003c\/td\u003e\n        \u003ctd\u003eN202M-03\u003c\/td\u003e\n        \u003ctd\u003eOB6593\u003c\/td\u003e\n        \u003ctd\u003eImpeller only\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOberdorfer\u003c\/td\u003e\n        \u003ctd\u003eN202M-7\u003c\/td\u003e\n        \u003ctd\u003eOB6593\u003c\/td\u003e\n        \u003ctd\u003eImpeller only\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOberdorfer\u003c\/td\u003e\n        \u003ctd\u003eN202M-11\u003c\/td\u003e\n        \u003ctd\u003eOB6593\u003c\/td\u003e\n        \u003ctd\u003eImpeller only\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOberdorfer\u003c\/td\u003e\n        \u003ctd\u003eN202M-15\u003c\/td\u003e\n        \u003ctd\u003eOB6593\u003c\/td\u003e\n        \u003ctd\u003eImpeller only\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eOberdorfer\u003c\/td\u003e\n        \u003ctd\u003eN202M-16\u003c\/td\u003e\n        \u003ctd\u003eOB6593\u003c\/td\u003e\n        \u003ctd\u003eImpeller only\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eImpeller Repair Kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Dimensions\u003c\/dt\u003e\n\u003cdd\u003eWidth: 22mm (7\/8\"), Diameter: 51mm (2\")\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003e1\/2\" D Shaft\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Blade Count\u003c\/dt\u003e\n\u003cdd\u003e6\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Impeller (Replaces Oberdorfer 6593, Onan 132-0316)\u003c\/li\u003e\n  \u003cli\u003e1 x Gasket (Replaces Oberdorfer 6599, Onan 132-0315)\u003c\/li\u003e\n  \u003cli\u003e1 x O-ring (Replaces 9797-034)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n    \u003cli\u003eEnsure the engine is off and cool. Close the raw water seacock.\u003c\/li\u003e\n    \u003cli\u003ePlace an absorbent towel under the pump to catch any spilled coolant.\u003c\/li\u003e\n    \u003cli\u003eLoosen the screws and remove the pump's cover plate.\u003c\/li\u003e\n    \u003cli\u003eNote the orientation of the impeller blades before removal. This helps ensure the new one is installed correctly.\u003c\/li\u003e\n    \u003cli\u003eUse impeller pullers or two flat-head screwdrivers to gently pry the old impeller out of the housing. Avoid scratching the housing walls.\u003c\/li\u003e\n    \u003cli\u003eClean the inside of the pump housing, the cover plate, and the gasket surfaces. Remove any old gasket material or debris.\u003c\/li\u003e\n    \u003cli\u003eInstall the new O-ring or gasket included in the kit.\u003c\/li\u003e\n    \u003cli\u003eLubricate the new impeller with a small amount of water-based lubricant or liquid soap, then install it into the housing, bending the blades in the correct direction.\u003c\/li\u003e\n    \u003cli\u003eReinstall the cover plate and tighten the screws evenly in a star pattern.\u003c\/li\u003e\n    \u003cli\u003eOpen the seacock, start the engine, and immediately check the pump for leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I confirm this kit fits my pump?\u003c\/summary\u003e\n  \u003cp\u003eThe best way is to verify your pump model number against our compatibility list (e.g., Oberdorfer 202M-11) or cross-reference an existing OEM part number from your old kit (e.g., Onan 132-0277). Also, compare the impeller dimensions (51mm diameter, 22mm width) with your current part.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing impeller?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include engine overheating at idle or low speeds, a noticeable reduction in water flow from the exhaust, and visible cracks or missing blades on the impeller itself upon inspection. A stiff or swollen impeller also indicates it's time for replacement.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should I replace my impeller?\u003c\/summary\u003e\n  \u003cp\u003eAs a general rule, impellers should be inspected annually and replaced every 1 to 2 years, depending on usage hours and water conditions (sandy or silty water causes faster wear). It's wise to replace it as part of your regular pre-season maintenance routine.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eCan I reuse my old gasket or O-ring?\u003c\/summary\u003e\n  \u003cp\u003eNo. This kit includes a new gasket and O-ring because the old ones can become compressed, brittle, or torn during removal, leading to leaks if reused. Always use the new seals provided.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this impeller resistant to fuel or oil?\u003c\/summary\u003e\n  \u003cp\u003eThis impeller is made of neoprene, which is designed for pumping water and engine coolant. It is not intended for pumping fuel or oil, as petroleum products can cause the neoprene to swell and degrade quickly.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the difference between this kit and the OEM version?\u003c\/summary\u003e\n  \u003cp\u003eFunctionally, there is no difference. Our aftermarket kit is designed to meet or exceed OEM specifications for fit, materials, and performance. It offers a cost-effective alternative to the original manufacturer's part without compromising reliability.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat if I buy the wrong part?\u003c\/summary\u003e\n  \u003cp\u003eWe accept returns for unused items in their original condition within our standard return period. To avoid errors, please double-check your engine or pump model and cross-reference part numbers before ordering. If you are unsure, contact our support team for assistance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow fast do you ship?\u003c\/summary\u003e\n  \u003cp\u003eWe ship worldwide from our closest warehouse to ensure fast delivery, with typical transit times of 5–15 days for standard shipping. Expedited shipping options are available at checkout for most regions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the warranty on this part?\u003c\/summary\u003e\n  \u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use conditions. If you experience an issue, contact our customer support with your order number and a description of the problem for assistance.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVerify images and specifications against your original part before purchasing. If any details differ—even if your model is listed as compatible—do not order.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part, not an original equipment manufacturer (OEM) component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is strongly recommended to ensure safety, proper function, and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply high-quality marine parts engineered to meet or exceed OEM-level tolerances and rigorously tested for real-world reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — With warehouses worldwide, we offer free standard delivery to most regions in 5–15 days, getting you back on the water faster.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — By working directly with manufacturers, we provide fair, competitive pricing without compromising on materials or quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50717894672699,"sku":"FY-JV04-JD44","price":25.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/FY-JV04-JD44.png?v=1762937650"}],"url":"https:\/\/seasierra.com\/collections\/oberdorfer-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}