COOLING GASKET COVER YAMAHA 6K8-41124-A1

Function and technical context

This gasket is part of the Yamaha marine engine cooling system, sealing the coolant circuit cover to prevent fresh or salt water leaks. It works under constant pressure in the water passage to the engine block, guaranteeing the tightness of the system and preventing the infiltration of seawater or corrosion into the internal chambers. Poor sealing at this point can cause progressive overheating, water entry into the cylinder head, and accelerated oxidation of critical internal components.

When to replace this part?

Cooling gaskets degrade due to continuous thermal cycling, hardening of the elastomeric material and working pressure. It is recommended to check its condition during each seasonal maintenance, especially after periods of intensive navigation or in warm waters. If you notice coolant loss at idle, rust around the cap, or abnormal temperature readings on the dashboard, this is a sign that the gasket has lost compression and should be replaced immediately to avoid costly engine failure.

Compatible Yamaha engines

Equivalent manufacturer part numbers