YAMAHA SEAL 93101-13018

Function and technical context

The Yamaha 93101-13018 seal is a sealing component that is part of the marine engine sealing system. Its main function is to prevent the entry of water and the leakage of lubricant in the critical areas where the rotating shafts pass through the engine block casing. Installed in the cooling and lubrication circuit, this seal acts as a protective barrier against marine corrosion and saline pollution that characterizes the nautical environment. A failure in this component compromises the integrity of the internal sealing, allowing infiltrations that can cause engine overheating, loss of lubrication pressure and serious structural damage to bearings and friction surfaces.

When to replace this part?

The seals show progressive wear due to friction of the rotating shaft, manifested by oil leaks around the sealing area, abnormal humidity in the crankcase or entry of fresh water into the lubrication circuit. It is recommended to check the condition of the seal during each seasonal maintenance and replace it preventively during general engine inspections, especially if salt deposits or surface corrosion are detected. A preventive change avoids costly repairs resulting from progressive deterioration and ensures reliable engine operation throughout the entire boating season.

Equivalent manufacturer part numbers