Sierra 18-6963 Yamaha Outboard StarterSierra replacement starter for Yamaha Outboards.Features: All joints enhanced to prevent entry of water/moisture into the motor body; Painted surface to improve rust prevention capabilities; Robust clutch gear spring engineered to increase performance; Upgraded planetary seal to help prevent water intrusion; Interchangeable with: Yamaha Outboard; 6EM-81800-00-00; 6EM-81800-01-00;