These Engine Anodes, (also known as pencil zincs), when installed on your engine block, increases the longevity of your engine. Our zinc engine anodes protect heat exchangers from corrosion issues.  Coupled with brass plugs, we carry varying sizes from 1/4″ to 1″ in brass plug size.

All of our Pencil Zincs conform to meet all MIL-Spec standards Mil-Spec 18001 and are manufactured by the world’s finest Boat Zinc supplier Sea Shield Marine.