Mercruiser Anode Kit. Always check propeller clearance after installing new trim tab anodes. Aluminum. Application Cavitation Plate Anode Kit. For Force Standard Gearcase Models: 9.9/15 hp. 2-cycle MY1998, Mercury/Mariner Standard Gearcase Models: 6/8/9.9 hp. 2-cycle MY1986 & newer, F8/9.9 hp. FourStroke MY1995-2004, F13.5 hp. FourStroke MY2001 & newer, F15 hp. FourStroke MY1998-2006, XR10, 10 Marathon, 10 Seapro, 10 Viking