YAMAHA ENGINE BASE GASKET 69M-45113-A0 PAF2.6-00000003

Function and technical context

The engine base gasket is a critical sealing element that ensures tightness between the engine block and mounting structure on Yamaha outboard engines. This part works in the general sealing system of the engine, subject to constant vibrations and operating temperature variations. Poor sealing in this area allows sea or salt water to infiltrate into the engine, compromising the integrity of internal components and causing accelerated corrosion, loss of compression and serious mechanical failures.

When to replace this part?

Signs of base gasket deterioration include visible water leaks around the mounting area, rust or corrosion on the engine base, and abnormal water build-up in the crankcase. It is recommended that this gasket be inspected and replaced during each seasonal maintenance, especially after prolonged periods of saltwater boating or after repairs that require engine disassembly. The preventive change avoids costly repairs due to water ingress and internal corrosion.

Compatible Yamaha engines

Equivalent manufacturer part numbers