Anodes for boat engines
The anode works as an electrode that protects drivelines and engines for oxidation. Instead of the iron in the engine being weakened, a sacrificial anode is used made from non-precious metal (zinc) which is "eaten up" by more precious metals, such as iron and copper. The anode is a consumable item which must be checked every year and replaced when only half remains. Here you can find different types of anodes for both inboard and outboard engines.