ZNC 3/8X1-3/4IN PENCIL ONLY
Engine Pencil Anodes - Zinc
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Replacement Engine Pencil Anodes - Zinc

Anode Only - No Brass Plug

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Overview
Replacement pencil anodes thread into your existing pencil anode brass plug(s).
• Built to military specification MIL-A-18001
• Made in California, USA

Note: In spite of Fisheries' promotion of aluminum sacrificial anodes as a generally superior choice of material, pencil anodes is an application where zinc is the anode material of choice. This is because aluminum pencil anodes are known to break at the neck and end up blocking coolant channels. As a result, most engine manufacturers - Cummins, Yanmar, Caterpillar, etc. - still use zinc for pencil anodes, and you should too. In fact, Fisheries does not stock aluminum pencil andes for the above reason.
 
 
 
 
 
 
 

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