YAMAHA PLUG 670-24610-02

Function and technical context

This plug is part of the engine closing and sealing system, sealing critical access points to the block or crankcase in Yamaha outboard engines. Its primary function is to prevent water, moisture and external contaminants from entering internal cavities while maintaining the structural integrity of the housing. Poor sealing at these points can compromise the overall tightness of the engine, allowing salt water infiltration that would accelerate internal corrosion and deterioration of critical components. Therefore, its condition is essential to preserve the durability and reliability of the propulsion system in maritime navigation.

When to replace this part?

It is advisable to inspect this plug during each seasonal maintenance, especially after navigation in salt water or prolonged exposure to humid environments. Symptoms of deterioration include cracks, deformations, loss of elasticity or signs of corrosion on its surface, which compromise the hermetic seal. Preventive replacement is recommended if any signs of wear are observed or if the plug does not close securely, thus avoiding costly repairs resulting from water infiltration that can affect the engine during navigation.

Engine Compatibility

Equivalent manufacturer part numbers