BOARD 688-44324-00 REC688-44324-00

Function and technical context

This gasket plays an essential role in the sealing circuits of the Yamaha engine, guaranteeing tightness at critical points of the drive assembly. It works in systems subject to pressure and constant thermal variations, avoiding leaks of cooling, lubrication or fuel fluids that would compromise the operation of the engine. Its progressive degradation due to exposure to extreme temperatures and compression cycles can cause internal leaks, loss of thermal efficiency and contamination of the lubricant, affecting the reliability and longevity of the propellant.

When to replace this part?

Gaskets progressively degrade with operating time and exposure to repeated thermal cycles, manifested by signs of moisture around connections, gradual loss of engine fluids or an increase in operating temperature. It is recommended to inspect regularly during seasonal maintenance and replace preventatively if signs of hardening, cracking or loss of elasticity are detected. A preventive change of seals during scheduled inspections avoids costly repairs and times of forced immobilization in navigation conditions.

Equivalent manufacturer part numbers