WASHER 90201-22M01 REC90201-22M01

Function and technical context

The 90201-22M01 washer is a critical fastening component in the transmission and mechanical anchor systems of Yamaha, Mercury and Parsun marine engines. This piece acts as a load distributor, preventing the fixing elements from becoming embedded in softer materials and guaranteeing uniform pressure distribution in the joints. Its correct condition is essential to maintain the tightness of the cooling, lubrication and power circuits, preventing leaks that could compromise the performance of the engine during navigation.

When to replace this part?

Washers degrade through permanent compression, oxidation and embrittlement after repeated cycles of tightening and vibration. It is advisable to inspect and replace any warped, corroded or worn washers during each seasonal maintenance check, especially before prolonged strandings or demanding sailings. Preventive replacement of washers in overhaul operations prevents unexpected failures in open sea and prolongs the life of the associated fastening systems.

Equivalent manufacturer part numbers