12V PMDD starter motor with 9 teeth sprocket, designed for clockwise rotation.Compatible with Rotax marine engines including 587 2-stroke models from 1995-1996, 657 2-stroke models from 1995-1996, and 717 2-stroke models from 1995-2005.Fits various models such as Challenger 1998, Explorer 1995-1997, GS 1997-2001, GSI 1997, 1996-2005, LE 2002-2004, GTS 1995-2001, 1995, HX 1995-1997, SP 1995-1997, Speedster 1995-1997 and 1999, SPI 1995-1996, Sportster 1995-1999, SPX 1995-1997, and XP 1995.Matches OEM part numbers 278-000-484, 278-000-485, 278-001-300, 278-001-935, ND228000-4553, 410-52038, 720-006, 111915, 228000-4550, 228000-4551, 228000-4552, 228000-4553, MS-807, Apr-67, 49-1091, 410-52038, 18415, S1091M, S1091MHT, 57-2857, 190-493, ST-18415, 46-4207, Feb-47, 91-29-5354, and 71-29-18415.