IMPELLER 6F5-44352-00 REC6F5-44352-00

Function and technical context

The 6F5-44352-00 impeller is the rotor of the outboard motor's water pump, responsible for driving the flow of coolant through the engine block and cooling circuits. This turbine works submerged in seawater, extracting the flow into the cooling system to maintain operating temperatures within safe limits. Its progressive degradation causes abnormal overheating of the engine, reduction in available power and risk of cracks in the cylinder head due to sustained thermal stress.

When to replace this part?

Water pump impellers require visual inspection at the beginning of the navigation season and preventive replacement every 300-400 hours of operation, or immediately upon detection of cracks, accelerated erosion in the blades or degradation of circulatory performance. Typical indicators include progressive overheating of the engine block, expulsion of white smoke in the cooling water intake, or pressure drop in the circuit pressure gauge. Replacing it preventively before it disintegrates prevents the entry of ceramic or elastomer fragments into the engine block and the need for major repairs in high-altitude navigation or distant waters.

Engine Compatibility

Equivalent manufacturer part numbers