Replaces 436745 Johnson Evinrude Gearcase Zinc Anode (393023) Height: 1-5/16" Width: 1-5/8" Mounting Hole: 5/16" Weight: 0.4 lbs Fits gearcase of Johnson and Evinrude 90 HP - 225 HP outboards, 1991 and newer. OMC Cobra outdrives 1984-1996 (except 460 Cobra). Exact equivalent to OMC 393023. Mounting hardware is not supplied. Note: Anode has an aluminum core insert that gets threaded from tightening the 3/8"-16 mounting screw. US Military Grade Zinc Zinc Is For Salt Water Use.