K&N Engineering

K&N Engineering: Five Decades of Filtration Innovation

Founded in 1969 by motorcycle racers Ken Johnson and Norm McDonald, K&N Engineering revolutionized automotive filtration with the development of the washable, reusable High-Flow Air Filter designed to perform under the demanding conditions of off-road racing. After experimenting with numerous filter media types, they discovered that an oiled cotton design not only captured contaminants efficiently but could also be washed and reused, establishing K&N as the inventor of the reusable high-flow air filter .

Headquartered in Riverside, California, K&N operates from a complex of 10 buildings comprising nearly 400,000 square feet, with additional facilities in England, The Netherlands, and China. Today, K&N is recognized as the world's leading manufacturer of washable performance air filters and cold air intake systems, selling over 5,000 products in over 30 countries for cars, trucks, motorcycles, engines, and industrial applications.

Industry-Leading Warranty Protection

K&N backs their products with exceptional warranty coverage: replacement air filters carry a 10-Year/Million Mile Limited Warranty, while cold air intake systems feature the same 10-Year/Million Mile protection. Unlike disposable filters requiring replacement every 15,000-20,000 miles, K&N filters are engineered to last the lifespan of your vehicle, potentially saving up to $125 versus purchasing multiple disposable filters over 200,000 miles 

Revolutionary Oiled Cotton Technology

K&N's premium filter design incorporates multiple layers of proprietary cotton gauze media with specially engineered oil, originally developed for racetrack demands and now custom-engineered for specific vehicle applications . Rather than acting as barrier filters that physically block airflow once pores are covered, K&N filters absorb dirt and dust particles, allowing pores to continue flowing air while maintaining superior filtration efficiency. This design delivers up to 50% more airflow than traditional paper filters, resulting in increased horsepower and torque.

Cold Air Intake System Options

K&N manufactures multiple intake series engineered for different applications and preferences:

57-Series & 63-Series (FIPK/AirCharger): Featuring high-density polyethylene rotationally molded tubes with custom heat shields or air boxes to protect intake air from engine bay heat The 63-Series features a slightly larger filter and specially engineered air bridge to smooth airflow for improved idle quality. Popular applications include Chevrolet Silverado/GMC Sierra (2007-2011 with 4.8L, 5.3L, 6.0L, 6.2L engines), Dodge/RAM 1500/2500/3500 with 5.7L HEMI (2009-2021) , and Ford F-150/Expedition/Navigator (2007-2014).

69-Series (Typhoon) & 77-Series: Premium systems featuring mandrel-bent aluminum intake tubes with steel heat shields, offering guaranteed horsepower and torque increases . These systems deliver enhanced engine bay aesthetics with polished or powder-coated aluminum finishes.

71-Series (Blackhawk Induction): Oil-free systems featuring synthetic filter media with black powder-coated aluminum tubes and all-black components for enthusiasts preferring maintenance-free filtration .

All intake systems feature oversized conical filters capable of going up to 100,000 miles between services under normal highway driving conditions and typically install in less than 90 minutes .

Popular Vehicle Applications

K&N provides extensive coverage for domestic and import vehicles:

Ford Mustang: Complete filter and intake solutions for 2015-2025 models including GT, Dark Horse 5.0L V8, and EcoBoost 2.3L applications 

Trucks & SUVs: Ford F-150 (2007-2024), F-250/F-350 Super Duty (2017-2020), Chevrolet Silverado 1500, GMC Sierra (2016-2019), Dodge Ram 1500/2500 (2019-2020), Nissan Titan V8 (2017-2021)

Jeep: Wrangler (2013-2018 and newer), Gladiator (2020-2021), Grand Cherokee with V8 5.7L (2011-2022)

Muscle Cars: Dodge Challenger R/T (2011-2021), Dodge Charger (2011-2021), Chrysler 300 (2005-2020)

Performance Imports: Honda Civic (2016-2021), Subaru WRX STI (2014-2021), Toyota Tacoma (2016-2020), 4Runner (2010-2020)

Sustainable Performance Solution

K&N filters provide an environmentally friendly alternative to disposable filters, with over 100-200 million disposable air filters and their packaging ending up in landfills annually. Replacement filters require cleaning only every 50,000-75,000 miles under normal highway driving conditions—approximately once every five years based on average annual mileage .

Proven Racing Heritage

K&N's performance cotton filter design has been tested and perfected over five decades in demanding motorsports environments including NASCAR, NHRA drag racing, Formula Drift, and sprint car racing . The company's legendary durability was demonstrated by Louisiana resident Carl Judice, whose 1998 Chevrolet pickup accumulated over one million miles using only a single K&N air filter.

Whether you're seeking maximum performance for your daily driver, better towing capability for your truck, or emissions-legal power gains backed by dyno testing, K&N Engineering delivers the proven filtration technology, American-made quality, and industry-leading warranty protection that millions of enthusiasts trust worldwide.