YAMAHA GASKET 68V-15312-00

Function and technical context

This gasket is part of the critical sealing systems of the Yamaha engine, ensuring tightness between components subjected to variable pressure and temperature cycles. Installed at junction points where operating fluids (coolant, lubricant or other internal circuits) converge, it prevents leaks that could compromise the mechanical integrity and performance of the propeller. Poor sealing in these areas leads to pressure loss in internal circuits, entry of contaminants into the systems and, in severe cases, structural damage to the engine block.

When to replace this part?

The gaskets degrade due to aging of the elastomeric material, prolonged exposure to operating temperatures and repeated thermal cycles characteristic of navigation. It is recommended to inspect the condition of the gaskets during each seasonal maintenance and replace them preventively if they show permanent compression, cracking or loss of elasticity. Changing this gasket during dismantling or repair of internal systems prevents subsequent secondary leaks and guarantees complete restoration of the engine's tightness.

Equivalent manufacturer part numbers