BOLT 66T-45635-00 REC66T-45635-00

Function and technical context

This bolt is part of the structural fastening and fixing systems of Yamaha engines, playing a critical role in maintaining the mechanical integrity of the propulsion assembly. It acts as a connecting element in areas subject to constant vibration and traction stress derived from the operation of the marine engine. Its correct installation and condition guarantees that the internal components remain aligned and secure, avoiding displacements that would compromise the durability and performance of the propeller.

When to replace this part?

Bolts can loosen due to vibration, corrosion or material fatigue after prolonged periods of sailing, especially in saltwater environments. It is recommended to periodically inspect the state of the fastening during each seasonal maintenance check, checking for deformation, oxidation or loss of tightening. Preventively replacing any damaged bolt avoids the risk of accidental detachments that could cause serious breakdowns or emergency situations at sea.

Equivalent manufacturer part numbers