In this post we go over the various types of gas tank plugs in a Subaru. Like most plugs, Subaru has changed the plug type for different features and availability. Below we have images as well as a description of which cars the plug is compatible with.
Gas Tank Plugs

This gas tank plug is for newer model Subarus. It plugs into the top of the fuel tank assembly.
1999-2026 Legacy (All)
1999-2026 Outback (All)
2003-2006 Baja (All)
2006-2014 Tribeca
2008-2021 STI
2008-2026 Impreza (Non-Turbo)
2013-2026 Crosstrek
2008-2014 WRX
2022-2026 WRX
2009-2013 Forester (All)
2019-2026 Forester (All)

This gas tank plug is for older model Subarus. It plugs into the top of the fuel tank assembly.
1993-2007 Impreza (Includes Outback Sport)
1998-2008 Forester
1998-2008 Forester XT
2002-2007 WRX
2004-2007 STI
2014-2018 Forester (All)
2015-2017 Crosstrek
2015-2016 Impreza
2015-2021 WRX
Other Fuel System Related Plugs:

This plug is for the Fuel Pump Controller.
Compatible Cars:
2002-2014 WRX
2004-2008 Baja XT
2004-2013 Forester XT
2004-2021 STI
2005-2009 Legacy GT
2005-2009 Outback XT

This plug is for the Fuel Sub Level Sensor. In older-style gas tanks, there are two level sensors, one in each saddle of the tank. The fuel level goes through the first sensor and then runs through the second sensor. The ECU takes the average of these two sensors to know the fuel level in the tank.
1995-2021 Legacy (ALL)
1995-2021 Outback (ALL)
1995-2021 Impreza (Includes Outback Sport)
1998-2021 Forester (ALL)
2002-2021 WRX
2004-2021 STI
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