Marine Pencil Zincs & Anodes

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CategorySacrificial Anodes & Replacement Zincs
CategoryMarine Pencil Zincs & Anodes
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Protect Your Marine Engine with Pencil Anodes


Fisheries Supply sells marine pencil anodes made of aluminum, zinc, and magnesium for saltwater and freshwater use. Pencil anodes, also called pencil zincs or engine anodes, are important for protecting your boat engine from corrosion.

What are Pencil Anodes?

Pencil zincs are sacrificial anodes designed to protect specific components of your marine engine, particularly the heat exchangers. These anodes typically attach to a brass plug within the heat exchanger and act as a barrier against corrosion.

The Importance of Regular Maintenance

Proper maintenance is essential to ensure the longevity and optimal performance of your marine engine. During your annual engine maintenance routine, it is crucial to inspect the pencil zinc anode. If less than 50% of the anode remains, you should replace it to maintain effective protection against galvanic corrosion.

Choosing the Right Pencil Anode

At Fisheries Supply, we offer several types of pencil zincs:
  • Aluminum Pencil Anodes: Suitable for saltwater applications, these marine engine anodes provide reliable protection for your marine engine components.
  • Zinc Pencil Anodes: Another option for saltwater environments, marine zinc anodes offer excellent corrosion resistance and durability.
  • Magnesium Pencil Anodes: Designed specifically to protect your engine in freshwater, such as lakes and rivers.
Our representatives are available to assist you in selecting the most appropriate engine zinc for your boat's motor.

Shop for your pencil zinc now and save or browse our wide selection of engine raw water pumps.