EXHAUST GASKET 27-81440M

Function and technical context

The 27-81440M exhaust gasket is a critical sealing component that ensures tightness at the junction of the exhaust manifold with the rest of the exhaust system. This part works in the engine exhaust system, where it must withstand high temperatures and corrosion from the marine environment. Its failure allows the leakage of exhaust gases and the entry of water into the engine, compromising performance, mechanical integrity and navigation safety. A defective gasket reduces exhaust pressure and facilitates accelerated corrosion of adjacent components.

When to replace this part?

Exhaust gaskets show symptoms of wear when visible water leaks are observed in the collector area, abnormal sounds in the exhaust or loss of tightness after checking the joint. Although there is no fixed replacement interval, it is advisable to inspect this gasket at each seasonal maintenance and replace it when reduced compression, discoloration or cracks are detected. Changing the gasket preventively during exhaust disassembly works prevents unforeseen breakdowns in the water and prolongs the life of the surrounding components.

Mercury/MerCruiser

Equivalent manufacturer part numbers