If the glovebox is that easy to remove it's at least worth checking the condition in either the fall or spring. You'd be surprised how much more they do filter than say the engine air filter. And the intake ducting is pretty open. There are also reasons to change it seasonly, especially in rural areas. http://www.subaruforester.org/vbulletin/899981-post12.html and bbottomley changes his once a year!!Twist2Stop said:The Crosstrek one is behind the glovebox. Remove the damper shaft and push the stoppers on the sides in as far as they can go. Pull the box out. The air filter is directly behind that and easy to get to.
Might be a dealer part for now. None of the local parts guys know what a Crosstrek is or have listings for them.