Washer BRP 3,5 5 6CV 4T 5031705

Function and Technical Context

This washer acts as a sealing element and load distribution component in the bolted joints of the BRP outboard motor, preventing fluid leaks and protecting contact surfaces against wear from friction and corrosion. It operates within the motor's structural fastening assembly, where correct tightening pressure is essential to maintain the integrity of gaskets and seals. Its presence ensures that torsion forces are distributed uniformly across the threaded surface, preventing loosening of critical elements subjected to continuous vibration during navigation. If this component deteriorates or is missing, tightening can become irregular, compromising the assembly's sealing integrity and causing anomalous vibrations or even progressive loosening of the affected fastening. Replaced manufacturer reference: 5031705.

When Should You Replace This Component?

Washers should be inspected each time the joint housing them is disassembled, as tightening and repeated thermal cycles can deform them, flatten them, or generate corrosion marks that prevent proper sealing during reassembly. It is recommended to replace them preventively during each seasonal service or whenever signs of rust, visible deformation, or loss of flatness are detected, since reusing a compromised washer can result in leaks or loosening during navigation. Having this replacement component in the onboard maintenance kit prevents unplanned downtime due to a low-cost but essential function component.

Compatible Johnson/Evinrude Engines

Equivalent Manufacturer References