Performance Air Filters

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.Key Features:4 layers of premium cotton gauze treated with...

K&N E-2429 round replacement air filter for 2011-2018 Audi A6. Red oiled cotton gauze.No-Hassle Lifetime Limited Warranty.Red cotton gauze mediaRound shape, 4.375in height, 7.25in OD, 4.625in IDRe-oiling: 1.73 oz (51 ml)WARNING: Cancer and Reproductive...

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.Key Features:4 layers of premium cotton gauze treated with a...

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.Key Features:4 layers of premium cotton gauze treated with...

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.Key Features:4 layers of premium cotton gauze treated with...

K&N E-2400 round replacement air filter for 1970-1974 MG MGB. Red oiled cotton gauze for classic British sports car performance.No-Hassle Lifetime Limited Warranty.Red cotton gauze mediaRound shape, 3.688in height, 5.063in OD, 3.625in IDRe-oiling: 0.64...

K&N RX-3800 Universal X-Stream Clamp-On Air Filter with angled flange and X-Stream top for maximum airflow. Adds pleated media in the top for enhanced performance.Specs:Flange Angle: 20 degreesLarge End: 4.5 in (114 mm)Flange Inside Diameter: 2.438 in...

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.Key Features:4 layers of premium cotton gauze treated with...

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.Key Features:4 layers of premium cotton gauze treated with...

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.Key Features:4 layers of premium cotton gauze treated with a...

K&N RX-2820 Universal X-Stream Clamp-On Air Filter features an integrated pleated filter in the top for even higher airflow and longer service intervals. Excellent for racing and performance applications.Highlights:X-Stream top designOutside Diameter: 5...

K&N E-2296 round replacement air filter for 2000-2009 Honda S2000. Red oiled cotton gauze for high-revving performance.No-Hassle Lifetime Limited Warranty.Red cotton gauze mediaRound shape, 7.563in height, 7in base ODRe-oiling: 1.6 oz (47 ml)WARNING:...