Air Filters

K&N 2019 Subaru WRX STI 2.5L F/I Replacement Air Filter - 33-5092

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...

K&N 05-08 LGT / 08-11 WRX / STi Drop In Air Filter - 33-2304

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...

K&N 02-07 WRX/STi Drop In Air Filter 11in O/S Length / 6.563in O/S Width / 1.063in Height - 33-2232

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...

K&N 04-07 Subaru STi K&N Drop In Air Filter - 33-2075

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...