YAMAHA ENGINE COOLING GASKET 6H3-41112-A0

Function and technical context

This gasket is a critical sealing component in the cooling circuit of Yamaha engines, responsible for maintaining tightness in the connections of the fresh water system and auxiliary circuits. Its function is to prevent coolant leaks that would compromise the efficiency of engine cooling, allowing controlled circulation of the fluid without losses to the outside or between internal circuits. A failure in this gasket causes progressive overheating, water entry into unexpected areas, accelerated corrosion of internal components and, in severe cases, irreversible damage to the engine block.

When to replace this part?

Cooling gaskets lose elasticity and tightness after repeated heating and cooling cycles, usually visible by drips around the radiator or heater connections, unexplained low level tanks, or fresh water mixing with engine oil. It is recommended to check the condition of all the refrigeration circuit joints at the beginning of each season and replace them preventively every 2-3 years or after interventions that have required uncoupling of system components. Changing this gasket preventively is cheaper than repairing the engine after overheating.

Compatible Yamaha Engines

Equivalent manufacturer part numbers