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 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. 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.
- 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®
K&N High Flow Air Filter - Subaru Models (inc. 2008+ WRX/STI)
Thank you for shopping at Mad Subie Performance. If you are not satisfied with your purchase, we're here to help.
Returns: You have 30 (change this) calendar days to return an item from the date you received it. To be eligible for a return, your item must be unused and in the same condition that you received it. Your item must be in the original packaging. Your item needs to have the receipt or proof of purchase.