Arco 30459: Arco premium OEM replacement inboard starter. Lightweight and compact. Features: Permanent Magnet; Gear Reduction; Counter Clockwise Rotation . Fits Merc, Crusader & Marine Power engines. 9 teeth count for pinion.Replaces:DELCO Inboard Starter 8000186DELCO Inboard Starter 9000888MARINE POWER Inboard Starter 475118MARINE POWER Inboard Starter 0170-000MERCURY Inboard Starter 50-808011A4MERCURY Inboard Starter 50-808011A05PLEASURECRAFT Inboard Starter RA122009SIERRA Inboard Starter 18-5603VOLVO Inboard Starter 3862985VOLVO Inboard Starter 855334WESTERBEKE Inboard Starter 21129980