YAMAHA SEAL 93102-35M13

Function and technical context

This seal is part of the sealing system of the Yamaha marine engine, sealing the passage areas of rotating shafts to prevent the entry of salt water into critical cavities. Its correct operation is essential to maintain the integrity of the lubrication and cooling system, avoiding oil contamination and premature corrosion of internal components. Failure of this seal causes loss of lubricant, water entry and, consequently, overheating and irreversible damage to the engine.

When to replace this part?

Typical symptoms include oil seeping around the shaft, water in the engine crankcase, or changes in lubricant viscosity. Although there is no fixed hourly interval, annual inspection during seasonal maintenance is recommended, especially after prolonged periods of saltwater boating or inactivity. Preventive replacement of the seal prevents costly repairs resulting from internal corrosion and significantly extends the life of the engine.

Equivalent manufacturer part numbers