K&N 04-07 Subaru STi K&N Drop In Air Filter

K&N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
K&N's replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection, and are covered by K&N's No-Hassle Lifetime Limited Warranty.

Fitment:
Subaru Baja Turbo 2004
Subaru Baja Turbo 2005
Subaru Baja Turbo 2006
Subaru Forester Sports 2.5 X 2008
Subaru Forester Sports 2.5 XT 2008
Subaru Forester X 2003
Subaru Forester X 2004
Subaru Forester X 2005
Subaru Forester X 2006
Subaru Forester X 2007
Subaru Forester X 2008
Subaru Forester X L.L. Bean Edition 2006
Subaru Forester X L.L. Bean Edition 2007
Subaru Forester X L.L. Bean Edition 2008
Subaru Forester XS 2003
Subaru Forester XS 2004
Subaru Forester XS 2005
Subaru Forester XS L.L. Bean Edition 2005
Subaru Forester XT 2004
Subaru Forester XT 2005
Subaru Forester XT Limited 2006
Subaru Forester XT Limited 2007
Subaru Forester XT Limited 2008
Subaru Forester XT Premium 2005
Subaru Impreza RS 1999
Subaru Impreza WRX 2004
Subaru Impreza WRX 2005
Subaru Impreza WRX STI 2004
Subaru Outback H6 VDC 2004