OUTBOARD TAIL ANODE 67F-45371-00 CM688-45371-02

Function and technical context

The tail anode for outboard motors acts as a cathodic protection element in the aft area of the engine, where exposure to salt or fresh water accelerates galvanic corrosion of critical metal components. This metallic sacrifice oxidizes in a controlled manner before the structural parts of the engine do so, preventing degradation of the casing, propeller and internal fixings. Without this active protection, marine corrosion would penetrate the cooling water passages and weaken the mechanical integrity of the propulsion group, compromising both the tightness and overall durability of the installation.

When to replace this part?

The anode must be replaced when it shows significant visual corrosion, volume reduction greater than 50% or loss of the surface protective layer; These symptoms indicate that it is no longer providing effective cathodic protection. It is recommended to inspect the condition of the anode at the end of each boating season and replace it preventively before prolonged periods in water, especially in saltwater environments where degradation is more accelerated. Changing the anode preventively avoids costly repairs due to water ingress or internal corrosion in the engine.

Equivalent manufacturer part numbers