YAMAHA SEAL 93101-16001

Function and technical context

The Yamaha 93101-16001 seal is a dynamic sealing component located on the drive shaft of the marine engine, whose mission is to prevent the leakage of lubricating fluids and prevent the entry of salt water into the internal chambers of the engine. This seal works under conditions of constant differential pressure, supporting the rotation of the drive shaft while maintaining the tightness of the lubrication system. Its correct operation is critical to preserve the integrity of the bearings, gears and internal surfaces, since any leak or marine contamination generates accelerated wear, internal corrosion and loss of power in propulsion.

When to replace this part?

Symptoms of seal wear include visible oil leaks around the drive shaft, water entering the crankcase (identified by a milky emulsion of the lubricant), or the presence of rust in normally lubricated areas. It is recommended to check its condition during each seasonal maintenance and replace it preventively every 500-600 hours of operation or in the event of any sign of leak, since its replacement in port avoids emergency repairs in navigation and significantly prolongs the useful life of the engine.

Equivalent manufacturer part numbers