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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...