BOARD 27-8547801

Function and technical context

The 27-8547801 gasket is a hermetic sealing component that acts on critical engine joints, preventing fluid leaks in variable pressure systems. It works in the cooling and lubrication circuit, maintaining tightness under fluctuating temperature and pressure conditions typical of the operation of Mercury, Mariner and Mercruiser marine engines. Its deterioration or absence directly compromises the integrity of the cooling system, which can cause water ingress, loss of oil pressure, engine overheating and serious damage to internal components.

When to replace this part?

The gaskets show signs of degradation after repeated heating and cooling cycles, especially in motors that work continuously or with severe temperature variations. If you notice visible leaks around the engine joints, abnormal loss of coolant, or symptoms of intermittent overheating, it is an indication that the gasket has lost its sealing ability. It is recommended to inspect the condition of the gaskets during each seasonal maintenance and replace them preventively during major inspections, thus avoiding costly repairs and unforeseen navigation stops.

Engine Compatibility

Mercury/MerCruiser

Equivalent manufacturer part numbers