Boating Engine Anodes with or without Brass Plug Zinc

Other sizes available upon request. Pencil Zincs Part No Brass Plug Size NPT Dia x Lgth Weight(lb) Zinc Thread Size E-0 1/4″ 3/8″ x 1-3/4″ 0.056 5/16″ -18 E-1 3/8″ 1/2″ x 2″ 0.104 3/8″ -16 E-2 1/2″ 5/8″ x 2″ 0.162 7/16″ – 14 E-2X 1/2″ 5/8″ x 3″ 0.260 9/16″ -12 E-2XL 1/2″ 5/8″ x 6″ 0.457 9/16″ -12 E-3 3/4″ 3/4″ x 2″ 0.240 1/2" -13 E-3X 3/4″ 7/8″ x 3″ 0.438 13/16″ -10 E-3XL 3/4″ 7/8″ x 6″ 1.000 13/16″ -10 E-4 3/4″ 3/4″ x 3-3/8″ 0.384 1/2″ -13 E-5X 1″ 1″x3″ 0.593 1″ -12 E-5XL 1″ 1″x6″ 1.260 1″ -12 Sea Shield Marine: Engine Anodes Installing Engine Anodes(pencil zincs) on your engine block allows you to increase the longevity of your engine. Our engine anodes also protect heat exchangers for corrosion problems.