Aluminium Anode For BRP OMC/Johnson Evinrude Aluminum Block 393023, 436745
Aluminium Anode for Johnson-Evinrude
Gearcase Anode for J/E 50HP-140HP
Reference to: 393023, 436745
The anode is made from a metal alloy with a more ""active"" voltage (more negative electrochemical potential) than the metal of the structure it is protecting (the cathode). The difference in potential between the two metals means the sacrificial anode material corrodes in preference to the structure.