ARCO NEW Original Equipment Quality Replacement Outboard Starter Fits: BRP-OMC, 50-60 HP 2-cyl, 9-tooth drive gear. Replaces Part Numbers: BRP-OMC 384163 BRP-OMC 387684 BRP-OMC 389275 BRP-OMC 585063 BRP-OMC 586280 BRP-OMC 778993