YAMAHA 6K8-41122-A1 ENGINE COOLING GASKET

Function and technical context

This gasket is a critical component of the Yamaha engine cooling circuit, responsible for sealing the internal connections through which the cooling fluid circulates. Its main function is to maintain tightness at the junction points of the cooling system, preventing leaks that would compromise the engine's ability to dissipate heat effectively. A failure in this gasket allows the coolant to escape to the outside, causing a progressive loss of efficiency in heat transfer and, in serious cases, engine overheating with the risk of irreversible internal breakdowns.

When to replace this part?

Cooling system gaskets show signs of aging when coolant leaks are detected at the connections, changes in the color of the fluid towards cloudy or rusty tones, or recurring coolant losses between seasonal inspections. It is recommended to inspect it during each seasonal maintenance and replace it preventively if it shows hardening, discoloration or after more than 5 to 7 years of intense use in navigation. Changing this gasket preventively avoids costly repairs resulting from engine overheating at sea.

Compatible Yamaha engines

Equivalent manufacturer part numbers