YAMAHA MANIFOLD GASKET 64E-13645-A0

Function and technical context

The manifold gasket is a critical sealing component in the exhaust system of Yamaha outboard engines. This piece ensures a tight connection between the exhaust manifold and the rest of the gas evacuation circuit, preventing smoke leaks and water from entering the interior of the engine. Its degradation directly compromises the integrity of the cooling and propulsion system, and can cause internal corrosion, loss of power and progressive damage to adjacent engine components.

When to replace this part?

The most obvious symptoms of manifold gasket wear include visible smoke in the exhaust area, water infiltration into the engine casing, and a characteristic odor of escaped gases. It is recommended that the gasket be checked and inspected at each seasonal maintenance, particularly after prolonged operation or exposure to salt water. Preventive replacement is highly advisable during major engine overhauls, as it avoids costly subsequent repairs and ensures safe operation while sailing.

Equivalent manufacturer part numbers