Features 1.Replace Part: Replacement for Jabsco 18653‑0001, 653‑0001; replacement for Johnson 09‑810B‑1, 09‑810B1‑1, 09‑810B; replacement for Westerbeke 034440, 34440, etc. 2.Applicable Pumps: The water pump impeller is a replacement for Jabsco 29440‑1001, 29470‑2231C, 51520‑2001 Pumps, replacement for Johnson F4B 10‑24509‑01 10‑24509‑02 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 2GM20‑YEU 2GM20C‑YEU 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 Impeller Material: Copper + Neoprene OEM: 18653-0001-P, 128990-42200 Replacement for Jabsco: 18653-0001, 653-0001 Replacement for Johnson: 09-810B-1, 09-810B1-1, 09-810B Replacement for Westerbeke: 034440, 34440 Replacement for Sierra: 18-45713 Replacement for Mallory: 9-45713 Replacement for CEF: 500101 Replacement for JMP: 7050-01 Blades: 6 Shaft Style: Slotted shaft pin drive Application: Cooling System (Water) Fitment: Replacement for Jabsco Pumps: 29440-1001 29470-2231C 51520-2001 Replacement for Johnson Pump: F4B 10-24509-01 10-24509-02 Replacement for Westerbeke Engine: 4.0BCD 4.4BCD 4.4WMD 5.0BCDA 5.0BCDB 6.0BCD 7.6BTD 7.7WMD 8.0BTD 8.0BTDA 8.0WMD 10.0BTD 10.0BTDA 11.0BTD 11.0WMD 12.5BTD 12.5BTDA 12.5BTDB 12.5WMD Replacement for Westerbeke Pumps: 033636 33636 Replacement for Engines: 2GM20-YEU 2GM20C-YEU 2GM20F-YEU, 2GM20FC-YEU 2YM15 3GM30-YEU 3GM30C-YEU 3GM30F-YEU 3GM30FC-YEU, 3YM20 3YM27A 3YM30 3YM30R Replacement for Pumps: 128377-42500 128397-42500 Package List 1 x Water Pump Impeller