K&N High Flow Drop In Air Filter 2008-2021 WRX / 2008-2018 STI

Description:
K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty™ and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED.

Features:
Designed to increase horsepower and throttle response
AEM Air Filters are cleanable and reusable for the life of your vehicle
Captures up to 99% of harmful contaminants
Outstanding performance even in dusty racing conditions
Manufactured in the USA
Does not require oil
Will NOT void vehicle warranty

Applications:
2008-2014 WRX
2008-2014 STI
2015-2021 WRX
2015-2018 STI
2005-2017 Legacy
2005-2011 Outback
2009-2013 Forester XT / X