YAMAHA WATER PUMP BODY 676-44341-00

Function and technical context

The water pump body is the central component of the Yamaha engine cooling system, responsible for housing the impeller and directing the flow of water to the cooling galleries of the engine block. This part works under constant pressure during engine operation, distributing coolant efficiently to maintain operating temperatures within safe ranges. A worn or corroded pump body can cause internal leaks, loss of circulation pressure and progressive overheating of the engine, compromising reliability in navigation.

When to replace this part?

Typical symptoms of deterioration include coolant leaks, abnormal increase in engine temperature during navigation, visible corrosion on the surface of the part or formation of lime deposits inside. It is recommended to inspect the pump body at each seasonal inspection, especially after navigation in salt water or after prolonged periods of inactivity. Replacing this part preventatively before leaks develop prevents emergency repairs at sea and costly secondary damage to the engine block.

Equivalent manufacturer part numbers