YAMAHA WASHER 90201-17M00 REC90201-17M00

Function and technical context

The Yamaha 90201-17M00 washer is a sealing and sealing component installed in the critical connections of Yamaha marine engines, where it acts as a load distributor and sealing barrier. Its main function is to prevent the penetration of salt water and contaminants into vulnerable areas of the engine, especially protecting the cooling and lubrication systems. The correct compression of this washer during tightening guarantees the integrity of the gaskets, preventing leaks that could compromise the circulation of coolant or lubricating oil in the engine block.

When to replace this part?

Engine washers suffer progressive wear after repeated disassembly and constant exposure to the saline corrosion of the marine environment, losing their compression and sealing capacity. It is recommended to visually inspect this washer during each seasonal maintenance and replace it preventively every two or three general inspections, especially if signs of deformation, crushing, oxidation or loss of elasticity are seen. Changing the washer preventively in each intervention that requires access to these connections avoids costly emergency repairs at sea and secondary damage to the engine due to water infiltration.

Equivalent manufacturer part numbers