Pencil Anodes

Pencil anodes are designed for use in heat exchangers, engine cooling systems & other marine applications where internal protection from galvanic corrosion is required. They thread into plugs or housings & slowly sacrifice themselves to extend the life of surrounding metal components.

Our range includes zinc pencil anodes with & without plugs, threaded in various sizes (1/8" to 1") to suit different cooling systems & housings. We stock aftermarket replacements for major marine engine brands including Yanmar, Caterpillar, Steyr, Bukh, Nanni & more, as well as universal options.

Whether you need a small engine anode or a heavy-duty plug assembly, these pencil anodes provide reliable, affordable corrosion protection. Replace regularly to maintain maximum system performance & prevent costly damage.