OMC Ignition Rotor pn 384735
also compatible with
Mercruiser GM Ignition Rotor 58217 / 58217Q / 898253008 2.5-3.0-3.7L 4cyl & IL 6 Delco1963-1989
Sierra 18-5418
Chris Craft 16.69-00051
Please check your equipment for correct fit before ordering