BOARD 27-812868 REC27-812868

Function and technical context

This gasket is a critical component in Mercury Mariner outboard motors, responsible for maintaining the hermetic seal at the junction points between cast bodies and internal engine systems. It works in the context of the engine's sealing system, avoiding leaks of salt water, coolant and lubricant into areas that would compromise operation. Its correct installation is essential to preserve the structural integrity of the engine and guarantee that the operating fluids remain confined in their respective circuits, avoiding internal corrosion and accelerated deterioration of adjacent components.

When to replace this part?

Gaskets should be inspected after each boating season, especially on boats that operate in salt water, where rust and deposit buildup accelerate wear. If drips are detected around gaskets, discoloration of the engine body due to oxidation or the presence of water in the crankcase, it is an indication that the gasket has lost elasticity or has microcracks. Preventative replacement during off-season maintenance prevents unexpected breakdowns at sea and protects expensive components from secondary damage resulting from persistent leaks.

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers