COOLING GASKET COVER YAMAHA 6G5-41112-A1

Function and technical context

This gasket forms an integral part of the engine cooling circuit, sealing the system cover to prevent leaks of fresh water or coolant fluid. Its function is to maintain the seal between the cooling cover and the engine body, allowing the fluid to circulate under pressure without losses. Failure of this gasket causes loss of coolant, overheating of the engine and, in extreme cases, irreversible damage to the cylinder liners and head gaskets.

When to replace this part?

It should be replaced when visible leaks around the cooling cap, abnormal drops in coolant level are detected, or during maintenance checks after more than two boating seasons. Cooling gaskets tend to harden and lose elasticity with prolonged exposure to the heat and salinity of the marine environment, so they should be replaced preventively along with other system components during scheduled services. Changing this gasket before it fails avoids unexpected navigation stops and costly repairs to the cooling circuit.

Equivalent manufacturer part numbers