Sierra International 18-2244 Drain Plug - 3/8" Sierra Drain Plug Used with Sierra 18-2945 Drain Screw Gasket Sierra part number: 18-2244 Interchangeable with the following: Chrysler F40109, GLM 22420, Mallory 9-72650, Mercury/Mercruiser 816610A2, 816610A1, 10-28634A1, 10-28634, 10-79953, 10-79953A2, 10-79953Q2, 10-79953Q04 Fit specific, check part numbers to ensure proper fit