Staycoolpumps Scp-34440 Impeller Kit Replaces Westerbeke 34440 Sierra 23-3307

6 Blade Impeller Width: 7/8′ (22Mm) , Diameter: 2′ (50.8Mm)) , Shaft: .472′ (12Mm) , Drive: Pin / Slot. Neoprene For Engine Cooling. Fits Westerbeke Models: 4.0 Bcd(60Hz) 4.4 Bcd(60Hz) 4.4 Wmd (60Hz) / 3.3 Wmd (50Hz) 5.0 Bcd (60Hz) /4.0 Bcd (50Hz) 5.0 Bcda (60Hz) / 4.0 Bcda (50Hz) 5.0 Bcdb (60Hz) / 4.0 Bcdb (50Hz) 6.0 Bcd (60Hz) /4.5 Bcd (50Hz) 7.6 Btd (60Hz) / 5.7 Btd (50Hz) 7.7 Wmd (60Hz) / 5.8 Wmd (50Hz) 8.0 Btd (60Hz) / 6.0 Btd (50Hz) 8.0 Btda (60Hz) / 6.0 Btda (50Hz) 8.0 Wmd (60Hz) / 6.0 Wmd (50Hz) 10.0 Btd (60Hz) / 7.5 Btd (50Hz) 10.0 Btda (60Hz) / 7.5 Btda (50Hz) 11.0 Btd (60Hz) / 8.3 Btd (50Hz) 11.0 Wmd (60Hz) / 8.3 Wmd (50Hz) 12.5 Btd (60Hz) / 9.4 Btd (50Hz) 12.5 Btda (60Hz) / 9.4 Btda (50Hz) 12.5 Btdb (60Hz) / 9.4 Btdb (50Hz) 12.5 Wmd (60Hz) / 9.4 Wmd (50Hz) 15.0 Btdc (60Hz) / 12.0 Btdc (50Hz)