YAMAHA GASKET 69J-41138-00

Function and technical context

This gasket plays a critical role in sealing critical marine engine components, preventing coolant, oil or seawater leaks depending on their specific location within the engine block. Works in the cooling system or at junction points where a precision hermetic seal between metal surfaces is required. Its integrity is essential to maintain the internal pressure of the cooling circuit and prevent salt water from entering the internal cavities of the engine, which would cause accelerated corrosion and catastrophic failure.

When to replace this part?

Gaskets show signs of aging when coolant leaks are observed around the coupling area, changes in the viscosity of the coolant due to dilution with water, or an unusual increase in engine temperature during navigation. It is recommended to check its condition during each seasonal maintenance and replace it preventively every 4-5 years or when dismantling work is carried out in the affected areas. Preventatively changing the gasket during scheduled maintenance operations saves significant emergency repair costs at sea.

Engine Compatibility Table

Equivalent manufacturer part numbers