Metal Guide

Al
Suitable for salt & fresh water
Mg
Suitable for fresh water
Zn
Suitable for salt water

Follow our colour coding for easy identification of metals.

Caterpillar Engine Anodes and Plugs

Huge range in stock and ready to ship. Caterpillar pencil anodes for inboard engine heat exchangers, exhaust and others made from the highest grade zinc for maximum protection. Brass plugs available separately. Can't find what you need? Contact us!

Enter your original part number in our search tool to find a matching zinc pencil or brass plug.

If you have a mystery size anode, contact us, and we will help you identify it!

Caterpillar Engine Anode Help Articles:

See our help centre for various articles on different requirements for C type and 3 series engines.