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Using a restrictor gasket can impede flow and lead to overheating
Oberdorfer Raw Water Pumps (Replaces Sherwood 10615K-SHW) is a direct replacement for the Sherwood 10615K-SHW impeller
Designed for service replacement utilizing your existing water pump housing
gently rotate the drive shaft clockwise to correctly fold the new impeller blades
21951356 Volvo Penta KAMD42A
Water Pump Impeller Kit – Fits Mercury/Mariner/Force 25-50 HP (Replaces 821354A2, 821354A1) 190HP Using a restrictor gasket canProduct Details This Water Pump Impeller Kit provides a comprehensive solution for servicing the cooling system on Mercury Mariner 2550 HP, 4 stroke outboards (1998Up) and Force 4050 HP outboards (19951997). It is engineered to restore cooling efficiency and prevent engine overheating. This kit serves as a direct cross reference for Mercury part numbers 821354A1, 821354A2, and 821354A04, as well as aftermarket equivalents like Sierra 18 4531 and GLM
