This sea water pump, complete with a 4.5" pulley, circulates coolant through the engine's heat exchanger to maintain optimal operating temperatures. It is built with robust materials to resist corrosion from saltwater, unlike a worn pump with a damaged impeller or leaking seal that fails to circulate coolant effectively. Symptoms of a failing sea water pump include engine overheating, a whining noise from the pump area, and visible leaks around the pump housing.
Always verify with serial number before ordering.
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Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
The most common sign of a failing sea water pump is the engine temperature gauge rising into the red zone, indicating overheating. You may also hear a whining or grinding noise from the pump pulley area, and notice water leaks around the pump housing. If left unaddressed, the engine can suffer severe internal damage due to excessive heat.
Before installing the new pump, ensure the mounting surface on the engine block is clean and free of old gasket material. Lubricate the new impeller slightly with marine grease to aid in installation and initial rotation.
Inspect the engine's heat exchanger and thermostat for any signs of blockage or malfunction when replacing the sea water pump.