BOARD 27-11756 REC6F5-41114-A0

Function and technical context

This gasket plays a critical role in MerCruiser and Yamaha engine sealing systems, ensuring tightness at critical engine block junction points. Its function is to prevent leaks of coolant, oil and seawater in highly important areas, preventing leaks that would compromise the integrity of the cooling system and the durability of the propeller. Failure of this gasket allows the entry of salt water or the loss of vital fluids, leading to internal corrosion, overheating and serious breakdowns that directly affect the performance and reliability of the marine engine.

When to replace this part?

Gaskets require inspection during each seasonal maintenance check, especially after prolonged inactivity or exposure to salt water. Symptoms of deterioration include visible drips around sealing points, abnormal coolant loss without apparent cause, or evidence of surface corrosion in adjacent areas. Preventive replacement is recommended for major maintenance tasks or when work is carried out in areas where this gasket is located, since its immediate replacement avoids costly repairs resulting from water damage or corrosion in adjacent components.

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers