YAMAHA ENGINE BASE GASKET 6E5-45113-A0 REC6E5-45113-A2

Function and technical context

The engine base gasket is a critical sealing component that seals the interface between the engine block and the mounting base on Yamaha outboard engines. This piece works in the structural system of the propeller, preventing coolant leaks and water entry into the internal cavities of the engine. Its correct placement guarantees the integrity of the cooling circuit and prevents internal corrosion, fundamental aspects to maintain the longevity and reliability of the propulsion assembly, especially in saline environments where the penetration of water accelerates the deterioration of metallic components.

When to replace this part?

The base gasket should be inspected at each seasonal maintenance check, mainly if moisture stains or salt deposits are observed around the base-motor joint area, indicative of leakage. Although it does not have a fixed replacement interval like the impellers, it is recommended to change it preventively during major maintenance work or after disassembling the engine, since the progressive crushing of the material reduces its sealing capacity. Replacing it preventively avoids costly repairs resulting from water entering the crankcase or deterioration of the cylinders.

Engine Compatibility

Equivalent manufacturer part numbers