Sierra 18-5630 Outboard Starter Sierra Outboard Starter Fits 50-60 HP 2-cylinder models Sierra part number: 18-5630 Interchangeable with the following: Arco 5371, Evinrude/Johnson 389275, 585063, 384163, 387684, 586280, 778993, Mallory 9-15006, OMC 587684