Feature:1. Replace Part: Replacement for Jabsco 186530001, 6530001; replacement for Johnson 09810B1, 09810B11, 09810B; replacement for Westerbeke 034440, 34440, etc.2. Applicable Pumps: The water pump impeller is a replacement for Jabsco 294401001, 294702231C, 515202001 Pumps, replacement for Johnson F4B 102450901 102450902 Pump.3. Applicable Engine: Replacement for Westerbeke 4.0BCD 4.4BCD 4.4WMD, 5.0BCDA 5.0BCDB, 6.0BCD 7.6BTD 7.7WMD Engine, replacement for 2GM20YEU 2GM20CYEU Engines, etc.4. Excellent Function: The flexible impeller is designed for marine water pumping, for instance, engine cooling, water transfer, wash down and bilge water pumping purposes, suitable for fresh or sea water.5. Recommendation: Suggest replacing your flexible pump impellers at least once every year or sooner depending on the engine duty; always carrying spare impellers on board before boating activities.Specification:Item Type: Water Pump ImpellerMaterial: Copper + NeopreneOEM: 18653-0001-P, 128990-42200Replacement for Jabsco: 18653-0001, 653-0001Replacement for Johnson: 09-810B-1, 09-810B1-1, 09-810BReplacement for Westerbeke: 034440, 34440Replacement for Sierra: 18-45713Replacement for Mallory: 9-45713Replacement for CEF: 500101Replacement for JMP: 7050-01Blades: 6Shaft Style: Slotted shaft pin driveApplication: Cooling System (Water)Fitment: Replacement for Jabsco Pumps: 29440-1001 29470-2231C 51520-2001Replacement for Johnson Pump: F4B 10-24509-01 10-24509-02Replacement for Westerbeke Engine:4.0BCD 4.4BCD 4.4WMD5.0BCDA 5.0BCDB6.0BCD 7.6BTD 7.7WMD8.0BTD 8.0BTDA 8.0WMD10.0BTD 10.0BTDA11.0BTD 11.0WMD12.5BTD 12.5BTDA 12.5BTDB 12.5WMDReplacement for Westerbeke Pumps: 033636 33636Replacement for Engines:2GM20-YEU 2GM20C-YEU 2GM20F-YEU, 2GM20FC-YEU 2YM15 3GM30-YEU3GM30C-YEU 3GM30F-YEU 3GM30FC-YEU, 3YM20 3YM27A 3YM30 3YM30RReplacement for Pumps: 128377-42500 128397-42500.Package List:1 xWater Pump ImpellerNote:1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!3. When installing, please lubricate with silicone grease, glycerin or detergent (above are not included).