BOARD 19242-ZW1-003

Function and technical context

This engine gasket is a critical sealing component on Mercury, Mariner and MerCruiser engines from 30 to 125 hp, as well as Honda marine engines. Its main function is to guarantee sealing between mating surfaces of the engine, preventing leaks of cooling fluids, lubricating oil or mixture in two-stroke systems. Working under conditions of constant vibration and exposure to varying temperatures of the marine environment, this gasket maintains the integrity of the engine's internal circuits. If it degrades or loses elasticity, leaks occur that compromise the operation of the cooling or lubrication system, leading to overheating and severe damage to cylinders and pistons.

When to replace this part?

Engine gaskets require replacement when visible leaks are detected around the docking areas, especially after periods of winter inactivity or after several seasons of intensive navigation. It is recommended to check the condition of the gaskets during seasonal maintenance and replace them preventively every 4-5 years or when engine block inspection work is carried out. Preventive replacement avoids costly emergency repairs at sea and ensures propulsion system reliability under demanding sailing conditions.

Engine Compatibility

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers