This is the original equipment Subaru transmission drain plug. Fits all five-speed and six-speed WRX and STI Subaru manual transmissions 2002 and newer, and probably most other Subaru transmissions of similar vintage.
On STI six-speed transmissions, this plug is in the front differential location, as shown in the photo.
Use a T70 Torx tool with this plug.
Includes gasket. (We also sell just the gasket.)
Fits all manual-transmission WRX and STI 2002+.