YAMAHA BAR ANODE WITH PLUG

Function and technical context

This bar anode acts as a sacrificial element in the cooling and cathodic protection circuit of Yamaha engines, especially in marine installations where salt water accelerates the electrochemical corrosion of metal components. Its main function is to oxidize in a controlled manner before the critical parts of the engine - cylinder head, block and cooling pipes -, preventing galvanic corrosion from deteriorating the structure of the engine. Installed in the water line or in closed cooling systems, it works gradually to maintain the integrity of the aluminum and stainless steel of the engine, preventing leaks, perforations and structural failures that would compromise the watertightness and reliability of the boat.

When to replace this part?

The bar anode must be inspected at the beginning of each navigation season and replaced when it shows visible loss of mass, deep pits or has reached 50-70% of its thickness; In salty waters or waters with a high concentration of minerals, this wear can be significantly accelerated compared to fresh waters. Although there is no fixed time interval, the typical consumption of these elements is seasonal, recommending their preventive replacement before the period of greatest nautical activity to guarantee continuous protection. Replacing the anode preventatively is a minimal investment compared to advanced corrosion repairs, which can involve expensive component replacement or even partial engine rebuilds.

Equivalent manufacturer part numbers