K&N Replacement Air Filters

K&N Replacement Air Filter Facts:

• High Air Flow with Excellent Filtration
• Designed to Increase Horsepower and Acceleration
• Washable and Reusable
• Will NOT Void Vehicle Warranty
• Lasts up to 50,000 miles before cleaning is required depending on driving conditions
• K&N Million Mile Limited Warranty®
• Emissions Legal in all 50 US States.
• Economical, a K&N Air Filter Will Last the Life of Your Automobile, Motorcycle, or ATV
• Works with Original Equipment Manufacturer Vehicle Electronics
• Easy High Performance Add-on
• Environmentally Friendly

Engine Protection, Filtration with a K&N Replacement Air Filter

Anyone can flow more air. The trick is to flow more air safely. In our opinion we hit the sweet spot – an optimal blend of high air flow, filtration efficiency, durability and dust capacity.  We take filtration seriously.  K&N Air Filter media has been tested both in-house and by independent labs using the ISO5011 test developed by the Society of Automotive Engineers.  In addition we test many of our filters both in and out of the OE airbox ensuring proper fit and function.  Our goal is to design filters with the maximum possible airflow achievable while providing guaranteed engine protection.

The Importance of Oil with a K&N Replacement Air Filter

A K&N Air Filter is made of 4 to 6 layers of cotton gauze sandwiched between two epoxy-coated aluminum wire screens.  The cotton is treated with a specially formulated grade of oil causing tackiness throughout the cotton’s microscopic strands.  The nature of the cotton allows high volumes of airflow, and when combined with the tackiness of the oil creates a powerful filtering media that ensures engine protection.  In contrast, most other media can not maintain the same balance of airflow and filtration throughout the filter's life without sacrificing one or the other.  With a K&N Air Filter, there is no sacrifice.