You can buy these pencil anodes complete or by the rod and plug.
Corrosion-Inhibitor Rods + Plugs with Reinforcing Wire
a.k.a (Engine Anode) Also known as
sacrificial anodes, pencil anodes or engine anodes, these zinc rods are
consumed by any electrolytic action that would otherwise attack and corrode your
valuable equipment. A reinforcing steel core holds zinc in place until
it's completely consumed. They come with NPT hex brass plugs. Zinc rods
protect from corrosion and scaling in hot water applications. Ideal for use in
salt water. They can also be used in cold water. The following are sizes we
stock and can ship out same day!
