Aluminum Anode Kit For Mercury 75, 80, 90, 100 and 115 HP Outboards. Kits Include 31640 Mercury/Mercruiser Standard Trim Tab Zinc Anode 818298 Mercury Outboard Zinc Anode 826134 Mercury Wedge Zinc Anode (Qty 2) This Is A US Military Grade Aluminum Anode Kit Made To The Highest Quality. Aluminum Is For Salt And Brackish Water Use. Replaces: Martyr CMM75115KITA, Tecnoseal 20806AL