{"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\/products\/impeller-repair-kit-fits-oberdorfer-202m-11-n202m-series-replaces-onan-132-0277-westerbeke-17556","provider":"SeaSierra","version":"1.0","type":"link"}