YAMAHA FUEL PUMP GASKET 650-24431-A0

Function and technical context

This gasket plays an essential role in the fuel supply system of Yamaha engines, hermetically sealing the fuel pump to ensure correct fuel distribution without leaks or air entry. Installed in the supply circuit, it prevents pressure losses from occurring in the supply line, which would directly affect the injection and dosing of fuel in the cylinders. A poor seal in this joint compromises the tightness of the system, causing fuel loss, air entry into the line and, consequently, irregular engine operation, starting difficulties and reduced performance.

When to replace this part?

The most common symptoms of gasket degradation include visible leaks around the fuel pump, a strong petrol smell in the engine compartment, and unstable engine behavior during acceleration or idling. It is recommended that the gasket be inspected annually as part of seasonal maintenance, especially if the equipment has been stored or exposed to extreme weather changes that accelerate the aging of the elastomeric material. Replacing the gasket preventively at every major service saves future repair costs and ensures reliability and safety of navigation.

Equivalent manufacturer part numbers