Contact Set Compatible with OMC 225 1978 Part# E66-0020 OEM# 16.69-00039, 18-5314, 20117, 2421820, 382135, 391-5090, 391-5090B, 391-898253004, 70060, 835304, 8M6001250, 9-29005, E66-0020, R114001, R114004, Ignition Type - Mallory Ignition.