{"product_id":"impeller-kit-for-westerbeke-marine-generators-replaces-oem-33112-fits-twg-btg-btga-wta-gensets-sierra-223-3302","title":"Sierra 223-3302 Impeller Kit for Westerbeke 33112 Marine Generators, White","description":"\u003cp\u003eThe Sierra 223-3302 Impeller Kit is a replacement raw water pump impeller kit built for Westerbeke marine generator sets. It is designed to restore proper raw water circulation through the generator's cooling system, a critical function for preventing overheating during operation. The kit corresponds to Westerbeke part number 33112 and is intended as a direct service replacement for that application.\u003c\/p\u003e\u003cp\u003eThe impeller itself is molded in white material sized to fit the raw water pump housing used across a range of Westerbeke generator models spanning multiple output ratings, including TWG, BTG, BTG\/A, BTGA, and WTA series units rated for both 60Hz and 50Hz operation. Because generator raw water pumps rely on flexible impeller vanes to move cooling water, this component wears over time and periodic replacement is part of routine generator maintenance to keep cooling performance reliable.\u003c\/p\u003e\u003cp\u003eThis is a single-item kit (one impeller per package) sold as a standalone service part. Sierra engineers its impellers to meet or exceed the specifications of the original equipment part being replaced, so the 223-3302 is built to perform to the same fit and function as the Westerbeke component it services.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 223-3302\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Westerbeke Generator Parts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282288518\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Generator Models:\u003c\/strong\u003e 11.0 TWG (60Hz) \/ 8.5 TWG (50Hz), 12.5 BTG (60Hz) \/ 10.0 BTG (50Hz), 15.0 BTG\/A (60Hz) \/ 12.0 BTG\/A (50Hz), 20.0 WTA (60Hz) \/ 16.0 WTA (50Hz), 6.5 TWG (60Hz) \/ 4.9 TWG (50Hz), 8.0 TWG (60Hz) \/ 6.4 TWG (50Hz), 8.5 BTG (60Hz) \/ 6.5 BTG (50Hz), 8.5 BTGA (60Hz) \/ 6.8 BTGA (50Hz)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWesterbeke 11.0 TWG (60Hz) \/ 8.5 TWG (50Hz)\u003c\/li\u003e\n\u003cli\u003eWesterbeke 12.5 BTG (60Hz) \/ 10.0 BTG (50Hz)\u003c\/li\u003e\n\u003cli\u003eWesterbeke 15.0 BTG\/A (60Hz) \/ 12.0 BTG\/A (50Hz)\u003c\/li\u003e\n\u003cli\u003eWesterbeke 20.0 WTA (60Hz) \/ 16.0 WTA (50Hz)\u003c\/li\u003e\n\u003cli\u003eWesterbeke 6.5 TWG (60Hz) \/ 4.9 TWG (50Hz)\u003c\/li\u003e\n\u003cli\u003eWesterbeke 8.0 TWG (60Hz) \/ 6.4 TWG (50Hz)\u003c\/li\u003e\n\u003cli\u003eWesterbeke 8.5 BTG (60Hz) \/ 6.5 BTG (50Hz)\u003c\/li\u003e\n\u003cli\u003eWesterbeke 8.5 BTGA (60Hz) \/ 6.8 BTGA (50Hz)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eWesterbeke 33112\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 223-3302 impeller kit fit?\u003c\/strong\u003e The 223-3302 is built for Westerbeke marine generators, covering the TWG, BTG, BTG\/A, BTGA, and WTA model lines in both 60Hz and 50Hz configurations, corresponding to Westerbeke part number 33112.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this the same part as Westerbeke 33112?\u003c\/strong\u003e Yes, the Sierra 223-3302 is the cross-reference replacement for Westerbeke part number 33112 and is built to the same fit and function as that original component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 223-3302 impeller?\u003c\/strong\u003e It is white, which is the standard color for this Sierra impeller kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the impeller kit weigh?\u003c\/strong\u003e The Sierra 223-3302 impeller kit weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in the kit?\u003c\/strong\u003e The kit includes one impeller as a single-item package, part number 223-3302.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 223-3302 work on a 50Hz generator?\u003c\/strong\u003e Yes, the compatible Westerbeke models are listed for both 60Hz and 50Hz operation, for example 11.0 TWG (60Hz) and its 8.5 TWG (50Hz) counterpart.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does a generator impeller need to be replaced?\u003c\/strong\u003e The impeller drives raw water circulation through the generator's cooling system, and its flexible vanes wear down over time, so periodic replacement with a part like the Sierra 223-3302 keeps cooling performance reliable and helps prevent overheating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 223-3302 an OEM part or aftermarket?\u003c\/strong\u003e It is a Sierra aftermarket impeller engineered to meet or exceed the specifications of the original Westerbeke 33112 part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 223-3302 fit the BTG\/A and BTGA generator models the same way?\u003c\/strong\u003e Both are covered: the kit fits the 15.0 BTG\/A (60Hz)\/12.0 BTG\/A (50Hz) models as well as the 8.5 BTGA (60Hz)\/6.8 BTGA (50Hz) model, listed as distinct generator designations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order this part?\u003c\/strong\u003e The order includes one Sierra 223-3302 impeller, packaged as a single kit item.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988447211739,"sku":"SIE-23-3302","price":38.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/sie-23-3302_lg__17747.1558142317.500.750.jpg?v=1785188452","url":"https:\/\/www.goodvibesmarina.com\/products\/impeller-kit-for-westerbeke-marine-generators-replaces-oem-33112-fits-twg-btg-btga-wta-gensets-sierra-223-3302","provider":"Good Vibes Marina","version":"1.0","type":"link"}