SILENTBLOCK BOX 663-44551-02-8D

Function and technical context

The silemblock box 663-44551-02-8D is an elastomeric support that is part of the suspension and damping system of the outboard motor. This component is installed at the points of attachment of the engine to the species, absorbing vibrations and impacts generated during operation, especially when sailing at high speeds or in rough waters. The deterioration of the silemblock compromises the structural stability of the propeller, allowing vibrations to be transmitted directly to the structure of the vessel, which can lead to material fatigue and loss of performance of the transmission system.

When to replace this part?

Symptoms of silemblock aging include excessive engine vibration, metallic noises during acceleration, and progressive propeller shaft misalignment. It is recommended to inspect the condition of the support during each seasonal inspection and replace it when cracks, hardening of the elastomer or abnormal movement between the metal elements are noticed. Preventive replacement prevents secondary damage to the gearbox and adjacent supports, saving costly interventions.

Compatibility table

Equivalent manufacturer part numbers