Sierra 18-6413 Outboard StarterSierra marine starters are designed for spark/ignition protection to prevent ignition of fuel vapor contained within the bilge of a boat. These units are sealed to prevent water intrusion and corrosion and are tested for Coast Guard and CE compliance. Sierra replacement outboard starter for use on Yamaha Outboards. 9 Tooth Drive Gear; Interchangeable with: Arco; 3426; Hitachi; S114-323; Mallory; 9-15038; Yamaha Outboard; 6E5-81800-11-00; 6E5-81800-12-00;