This is a replacement starter motor for a range of Yamaha and Mercury outboard engines around 75, 90, and 115 horsepower. For Yamaha, it fits models like the F115, F90, F75 from roughly 2000-2017 (part numbers 68V-81800-00, -01, -02, -03). For Mercury, it fits 1.7L 4-stroke EFI engines like the 115ELPT, 90ELPT, 75ELPT from 2001-2009 (part numbers 50-881368T, etc.). Also crosses to Hitachi S114-838A and others. Specs: 12-volt, 1.4kW (about 1.9 horsepower), clockwise rotation (when viewed from the drive end), 13-tooth pinion gear. Mounting holes are 8.8mm unthreaded. PLEASE double-check your engine's exact model, year, and serial number before ordering—horsepower alone isn't enough to confirm fit. If you're unsure, contact the seller with your engine info. A reliable direct replacement to get your boat starting strong again.