ECOGARD XC36115 Premium Cabin Air Filter Fits Subaru Forester, Impreza, XV Crosstrek, Crosstrek, WRX, WRX STI COMPATIBLE with 2009-2018 Subaru Forester, 2008-2016 Subaru Impreza, 2013-2015 Subaru XV Crosstrek, 2016-2017 Subaru Crosstrek, 2014-2018 Subaru WRX, 2014-2018 Subaru WRX STI. Doesn't fit 2017 and 2018 Subaru Impreza, instead use Ecogard XC10622. REMOVES AND FILTERS 99.5% of all dust, pollen, air pollution, allergens, pet dander, and other airborne contaminants from the outside air before it reaches the vehicle's interior. HELPS PREVENT PREMATURE WEAR on your car's HVAC (air conditioning and heating) system blower by promoting good airflow inside the car. Replace per manufacturer recommendations or when existing cabin air filter inhibits airflow. INSTALLS EASILY with included instructions - only takes a few minutes in most cars. SPECIFICALLY ENGINEERED AND TESTED for Subaru OE (original equipment) cabin air filter's fit, form, and function.