DRAIN PLUG Replaces: Mercury 10-79953A2 10-79953Q04 10-79953A2 10-79953Q2
For: #1/R/MR/Alpha/Alpha I Gen II Both Upper And Lower Units
3/8”-16 thread, Includes gasket 18-2945 & 12-191833
Sierra Marine Drain Plug is equivalent to parts:
10-79953Q04, 79953Q04 Mercury Marine
9-72650 Mallory Marine