{"product_id":"sierra-23-3307-impeller-kit-for-westerbeke-marine-generators-replaces-oem-34440","title":"Sierra Impeller Kit 223-3307, Replaces Westerbeke 34440, for Westerbeke Generators","description":"\u003cp\u003eThe Sierra 223-3307 Impeller Kit is a replacement impeller kit built for the raw water pump on select Westerbeke marine generators. The impeller is the wear component inside the generator's raw water circulation pump that draws in cooling water and keeps engine temperatures in check; over time the rubber vanes harden, crack, or shed material, which can restrict cooling flow and lead to overheating if not replaced. This kit is a direct replacement for Westerbeke part number 34440 and is built to Sierra's standard of matching or exceeding the original equipment part it replaces.\u003c\/p\u003e\u003cp\u003eThe kit is made of metal and rubber construction consistent with OEM-style impeller assemblies, ships as a complete one-count kit, and is sized for a compact raw water pump housing. It is designed to fit a wide range of Westerbeke BCD, BTD, BTDA, BTDB, BTDC, and WMD generator models across both 60Hz and 50Hz configurations, as detailed in the fitment section below. Boat owners performing routine cooling system maintenance or troubleshooting an overheating generator can use this kit as a like-for-like swap for the original impeller.\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 223-3307\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Weight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 6 x 2.5 x 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Generator Impeller Kit\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWesterbeke generator models: 10.0 BTD (60Hz) \/ 7.5 BTD (50Hz)\u003c\/li\u003e\n\u003cli\u003e10.0 BTDA (60Hz) \/ 7.5 BTDA (50Hz)\u003c\/li\u003e\n\u003cli\u003e11.0 BTD (60Hz) \/ 8.3 BTD (50Hz)\u003c\/li\u003e\n\u003cli\u003e11.0 WMD (60Hz) \/ 8.3 WMD (50Hz)\u003c\/li\u003e\n\u003cli\u003e12.5 BTD (60Hz) \/ 9.4 BTD (50Hz)\u003c\/li\u003e\n\u003cli\u003e12.5 BTDA (60Hz) \/ 9.4 BTDA (50Hz)\u003c\/li\u003e\n\u003cli\u003e12.5 BTDB (60Hz) \/ 9.4 BTDB (50Hz)\u003c\/li\u003e\n\u003cli\u003e12.5 WMD (60Hz) \/ 9.4 WMD (50Hz)\u003c\/li\u003e\n\u003cli\u003e15.0 BTDC (60Hz) \/ 12.0 BTDC (50Hz)\u003c\/li\u003e\n\u003cli\u003e4.0 BCD (60Hz)\u003c\/li\u003e\n\u003cli\u003e4.4 BCD (60Hz)\u003c\/li\u003e\n\u003cli\u003e4.4 WMD (60Hz) \/ 3.3 WMD (50Hz)\u003c\/li\u003e\n\u003cli\u003e5.0 BCD\/BCDA\/BCDB (60Hz) \/ 4.0 BCD\/BCDA\/BCDB (50Hz)\u003c\/li\u003e\n\u003cli\u003e6.0 BCD (60Hz) \/ 4.5 BCD (50Hz)\u003c\/li\u003e\n\u003cli\u003e7.6 BTD (60Hz) \/ 5.7 BTD (50Hz)\u003c\/li\u003e\n\u003cli\u003e7.7 WMD (60Hz) \/ 5.8 WMD (50Hz)\u003c\/li\u003e\n\u003cli\u003e8.0 BTD (60Hz) \/ 6.0 BTD (50Hz)\u003c\/li\u003e\n\u003cli\u003e8.0 BTDA (60Hz) \/ 6.0 BTDA (50Hz) - only for engines older than March 2004\u003c\/li\u003e\n\u003cli\u003e8.0 WMD (60Hz) \/ 6.0 WMD (50Hz)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eWesterbeke 34440\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 223-3307 impeller kit fit?\u003c\/strong\u003e The Sierra 223-3307 is built for the raw water pumps on Westerbeke generator models including the BCD, BTD, BTDA, BTDB, BTDC, and WMD series in both 60Hz and 50Hz configurations, such as the 10.0 BTD, 11.0 WMD, 12.5 BTDA, and 8.0 BTD lines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit replace Westerbeke part 34440?\u003c\/strong\u003e Yes, the 223-3307 impeller kit is a direct replacement for Westerbeke 34440.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 8.0 BTDA generator fitment limited to certain build dates?\u003c\/strong\u003e For the 8.0 BTDA (60Hz) \/ 6.0 BTDA (50Hz) model, the 223-3307 impeller kit only fits engines built older than March 2004.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the impeller kit made of?\u003c\/strong\u003e The Sierra 223-3307 is made of metal and rubber construction, matching the material used in the original Westerbeke impeller assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 223-3307 impeller kit weigh?\u003c\/strong\u003e The Sierra 223-3307 impeller kit weighs 0.05 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this impeller kit?\u003c\/strong\u003e The Sierra 223-3307 measures 6 x 2.5 x 6 inches as packaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in the kit?\u003c\/strong\u003e The 223-3307 kit ships as a single count unit, containing one complete impeller kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra an OEM or aftermarket brand for Westerbeke parts?\u003c\/strong\u003e Sierra is an aftermarket manufacturer that produces the 223-3307 impeller kit to match or exceed the specifications of the original Westerbeke 34440 part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the impeller in my Westerbeke generator?\u003c\/strong\u003e Replace the impeller in your Westerbeke generator's raw water pump when the vanes show cracking, hardening, or missing material, or as part of routine cooling system maintenance; the 223-3307 kit is sized to swap in for the original Westerbeke 34440 impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 223-3307 fit both 50Hz and 60Hz Westerbeke generators?\u003c\/strong\u003e Yes, the fitment for the Sierra 223-3307 spans both 50Hz and 60Hz versions of the listed Westerbeke BCD, BTD, BTDA, BTDB, BTDC, and WMD models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 223-3307 come with a warranty?\u003c\/strong\u003e The Sierra 223-3307 impeller kit is covered under Sierra's customer satisfaction warranty against defects in workmanship.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988447441115,"sku":"SIE-23-3307","price":25.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/sie-23-3307_lg__64632.1558142642.500.750.jpg?v=1785188896","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-23-3307-impeller-kit-for-westerbeke-marine-generators-replaces-oem-34440","provider":"Good Vibes Marina","version":"1.0","type":"link"}