Performance Air Filters

K&N RU-5138 Universal Clamp-On Air Filter with shorter height and wide 7.5in base for high volume airflow needs. Excellent filtration and power benefits.Details:Large End/Base: 7.5 in (191 mm)Flange Inside Diameter: 6 in (152 mm)Height: 5 in (127...

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-9289 custom air filter for the 57S-4000 performance air box. Red oiled cotton gauze with K&N embossed lid cap. Washable and reusable.1 Year Limited Warranty.Red cotton gauze mediaRound reverse tapered shape, 7.688in height, 5.719in large end...

Smaller footprint K&N RU-5135 Universal Clamp-On Air Filter is perfect for tight installations. Provides performance upgrade with reliable filtration.Specs:Large End/Base: 5.063 in (129 mm)Flange Inside Diameter: 2.75 in (70 mm)Height: 4.438 in (113...

K&N E-9172 round replacement air filter for 1999 Rover Mini. Red oiled cotton gauze for improved performance.No-Hassle Lifetime Limited Warranty.Red cotton gauze mediaOval shape, 1.5in height, 11.406in length x 7.188in widthRe-oiling: 0.5 oz (15 ml)Up to...

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 RU-5122 offers taller profile for increased filter area. Red round tapered design maximizes airflow while maintaining excellent engine protection.Key Specs:Large End/Base: 5.5 in (140 mm)Flange Inside Diameter: 3.25 in (83 mm)Height: 8 in (203...

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-4961 oil-free synthetic replacement industrial air filter for Caterpillar, Yazoo, Yanmar, and other equipment. High airflow with excellent filtration.1 Year Limited Warranty. Washable and reusable.Non-woven synthetic mediaRound shape, 10.75in...

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 RU-5114 Round Straight Universal Clamp-On Air Filter provides consistent performance. Cotton gauze media offers high flow and reliable protection.Specs:Outside Diameter: 5 in (127 mm)Flange Inside Diameter: 3.5 in (89 mm)Height: 5.625 in (143...