Keelguard Skeg Pro Skeg GuardSP655: Mercury Mercruiser Alpha One 1973 up, 40, 50 hp Big Foot 4 Stroke 2003 up, 60 hp Big Foot 4 Stroke, 75, 90, 115 hp 2 & 4 Stroke, 85 hp 1977, 135 hp 1990, EFI Saltwater 90 hp 2005, EFI Saltwater 115 4 Stroke 2003 up, Optimax 200 hp & Saltwater 2002, Optimax 250 hp 2006, Mariner 75, 90, 150, 175 hp 1995 2002, Mariner 115 hp 1994 2002, Mariner 125 hp 1998 2002, Tracker 75, 90 hp 2004, Suzuki DT 90, 150, 150 "S", 200, 225 hp, DF 150, 175, 200, 225,