K&N High Flow Air Filter - 2008-2021 WRX , 2008-2018 STI, 2014-2018 FXT, 2005-2009 LGT, 08-16 Impreza, 13-16 Crosstrek

K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. K&N makes over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box.

 

K&N's 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.

 

Stock replacement air filters for street vehicles are covered by K&N's famous Million-Mile Limited Warranty and will be the last air filter your vehicle will ever need.

 

- Designed to boost horsepower and rate of acceleration

- Can be cleaned and used again

- High air flow with exceptional filtration

- Lasts up to 50,000 miles before cleaning is required depending on driving conditions

- Works with original equipment manufacturer vehicle electronics

- Emissions legal in all 50 US states

- Will NOT void vehicle warranty

- Million Mile Limited Warranty