ARO 93210-97M55 REC93210-97M55

Function and technical context

The 93210-97M55 ring is a critical sealing component in Yamaha engines, responsible for maintaining tightness in areas of high mechanical and thermal demand. This ring acts as a protective barrier in the lubrication and cooling system, preventing leaks of internal fluids that would compromise engine performance. Its correct operation is essential to preserve the integrity of the combustion chambers and prevent cross contamination between fluid circuits. Any deterioration in this component can cause pressure loss in the internal circuits and accelerated wear of adjacent parts.

When to replace this part?

This type of hoop should be inspected regularly during seasonal maintenance, as wear is not always visible externally. Symptoms requiring immediate replacement include leaking seals, loss of tightness under pressure, and debris in the fluid reservoirs. It is recommended to carry out the change preventively every two seasons of intense use or when any intervention is carried out in adjacent areas, thus avoiding costly repairs derived from silent leaks that could damage internal engine components during navigation.

Equivalent manufacturer part numbers