Cylinder Head Anode 20HP- 30HP 20C 25D 2-Stroke for Yamaha Outboard 689-11325-00

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Cylinder Head Anode
Reference to:



Mercury 84732M,



Yamaha 689-11325-00



Yamaha C-MLH Manual Tilt / Manual Start 20 In. 25 1993

Yamaha C-MLH Manual Tilt / Manual Start 20 In. 25 1994

Yamaha C-MLH Manual Tilt / Manual Start 20 In. 25 1995

Yamaha C-MLH Manual Tilt / Manual Start 20 In. 25 1996

Yamaha C-MLH Manual Tilt / Manual Start 20 In. 25 1997

Yamaha C-MSH Manual Tilt / Manual Start 15 In. 25 1992

Yamaha C-MSH Manual Tilt / Manual Start 15 In. 25 1993

Yamaha C-MSH Manual Tilt / Manual Start 15 In. 25 1994

Yamaha C-MSH Manual Tilt / Manual Start 15 In. 25 1995

Yamaha C-MSH Manual Tilt / Manual Start 15 In. 25 1996

Yamaha C-MSH Manual Tilt / Manual Start 15 In. 25 1997

Yamaha EL Manual Tilt / Electric Start 20 In. 25 1984

Yamaha EL Manual Tilt / Electric Start 20 In. 25 1985

Yamaha EL Manual Tilt / Electric Start 20 In. 25 1986

Yamaha EL Manual Tilt / Electric Start 20 In. 25 1987

Yamaha L 25 1984

Yamaha L 25 1985

Yamaha L 25 1986

Yamaha L 25 1987

Yamaha S 25 1984

Yamaha S 25 1985

Yamaha S 25 1986

Yamaha S 25 1987

Yamaha C-MLH Manual Tilt / Manual Start 20 In. 30 1994

Yamaha EL Manual Tilt / Electric Start 20 In. 30 1984

Yamaha EL Manual Tilt / Electric Start 20 In. 30 1985

Yamaha EL Manual Tilt / Electric Start 20 In. 30 1986



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.