YAMAHA WATER PUMP TUBE 67D-44366-00

Function and technical context

This tube is part of the engine cooling circuit, channeling the water flow from the pump to the internal galleries of the block and cylinder head. Its function is essential to maintain continuous circulation of the coolant, avoiding dead spots where excessive heat accumulates. A deteriorated, cracked or internally clogged tube can compromise the efficiency of the cooling system, causing uneven flow distribution and accumulation of critical temperatures in vital areas of the engine.

When to replace this part?

Symptoms of failure include coolant leaks at the joints, unexplained engine overheating at the thermostat or sensor, and white deposits or visible corrosion at the connections. It is recommended that this tube be inspected during each seasonal maintenance, especially after prolonged periods of non-use or in water with high mineral content. Preventive replacement before cracks or internal detachments appear avoids emergency repairs in navigation and protects other components of the cooling circuit.

Equivalent manufacturer part numbers