YAMAHA COLLAR 90387-32002

Function and technical context

The Yamaha 90387-32002 collar is a holding and alignment component that is part of the mechanical structure of the outboard motor. This element acts as a retaining and positioning ring on the engine block, guaranteeing the correct alignment of critical internal components. Its correct installation is essential to maintain the structural integrity of the powertrain and avoid abnormal vibrations or imbalances that compromise the operation of the engine. The collar works within the power transmission system, where it supports mechanical stress derived from engine operation.

When to replace this part?

During seasonal preventive maintenance, it is advisable to visually inspect the condition of the collar for signs of deformation, corrosion or premature wear that may affect mechanical adjustment. If abnormal play is observed in the motor structure, vibrations without apparent cause or if an intervention has been carried out in the collar housing area, preventive replacement avoids subsequent operating problems. Periodic inspection of this component during each engine tune-up ensures that the fastening system maintains its effectiveness and prevents more costly repairs associated with internal misalignments.

Equivalent manufacturer part numbers