K&N Replacement Air Filters
K&N Air Intakes

K&N High Performance Air Intake Kits

  • Increases horsepower, torque, and acceleration
  • Replaces entire factory air intake system
  • K&N Million Mile Limited Warranty®
  • Easy to install performance improvement
  • Improves engine sound and looks great too
K&N Air Filters - K and N, KNN

K&N Stock Replacement Air Filters

  • Designed to increase horsepower and acceleration
  • Excellent filtration for long engine life
  • Lifetime air filter with K&N Million Mile Limited Warranty®
  • Simple drop-in performance
  • Available for cars, trucks, motorcycles, ATV's, diesels
K&N Universal Clamp-on Air Filters

K&N Universal Clamp-on Air Filters

  • Hundreds of sizes and shapes
  • Available to fit many types of air filtration needs
  • Designed to improve performance
  • Washable and reusable
  • Search for filters by dimension
K&N Premium Oil Filters

K&N Oil Filters

  • Designed for high flow rates to improve performance
  • Many filters feature a Wrench-Off Nut for easy removal
  • Heavy duty construction
  • Provides excellent filtration to protect your engine
  • Available for cars, trucks, motorcycles, diesel engines
K&N Filter Cleaning

K&N Filter Cleaning Kits and Instructions

  • Simple instructions for cleaning your K&N Filters
  • Easy to use cleaning kits.

What's new at K&N?

K&N HD Air Filters
K&N Heavy Duty Air Filters are now available for class 6-8 over-the-road trucks, agricultural and earth moving equipment, and diesel motorhomes.
K&N Heavy Duty Air Filters for class 6-8 over-the-road trucks, agricultural and earth moving equipment, and diesel motorhomes
Why K&N? Airflow & Protection!
See a demonstration of how a K&N air filter improves air flow to your engine when compared to a typical paper filter.
Why K&N? Airflow & Protection!

K&N Automotive & Racing Apparel

K&N offers T-shirts, hats, and other apparel in a range of styles, designs, and sizes for men, women, and children.
K&N Automotive & Racing Apparel
30 Day Test Drive
30 Day Test Drive Money Back Guarantee on Air Intakes!
K&N 30 Day Test Drive
K&N Product Reviews
Read what people are saying about K&N or tell us what you think.