The Original High-Flow Air Filter
K&N Automotive Panel Air Filter
K&N Motorcycle and ATV Air Filters
Since 1969 K&N Engineering has been designing, manufacturing, and enhancing High-Flow Air Filters for the automotive and motorcycle enthusiast interested in maximizing horsepower and acceleration. Since our humble beginnings we have designed and manufactured over 2,400 High-Flow Air Filters to fit most modern passenger vehicles and over 500 High-Flow Air Intake Systems to fit vehicles driven by enthusiast minded drivers. We not only have more applications than any other manufacturer of similar product, we invented the High-Flow category and the High-Flow Technology that supports it. K&N also makes thousands of racing and specialty type air filters and is the #1 Filter in NASCAR®.
The K&N FilterCharger® air filter is designed to achieve high, virtually unrestricted air flow while maintaining filtration levels critical to ensure long engine life. Our automotive OE (original equipment) replacement air filters generally add 1-4 horsepower. The secret to our success lies in the unique characteristics of our filter medium that was originally developed by K&N all those years ago in the dust, sweat and tears of desert motocross racing. We just wanted to win races and stumbled on a cotton filtration technology destined to be great. Our high flow cotton gauze air filter is washable, reusable and built to last for the life of an automotive or motorcycle engine. K&N air filters consist of four to six sheets of cotton gauze layered between two sheets of aluminum wire mesh. This media is then pleated and oiled to enhance its filtering capabilities and overall performance. K&N Air Filters were created for an environment requiring maximum horsepower and enhanced acceleration in addition to protection from the dirt and dust of off-road racing. The result is an air filter that allows dramatically more air into an engine, is washable and reusable, and will protect your engine for the life of your vehicle.
Engine Protection, Filtration
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
The Importance of Oil
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
Testing – Laboratory and Real World
K&N uses independent laboratories to help ensure that our products meet or
exceed your high performance and high filtration demands. Better yet, we conduct
our own testing at our own state-of-the-art in-house testing laboratory.
For more information on K&N air filters and testing go to the
K&N Technical Learning Center
area. K&N’s dedication to providing a first-class air filter can
also be seen outside the testing laboratory. Consider that K&N has sold
more than 20 million air filters since 1969. One such filter was put in
the airbox of a three-quarter ton Chevy pickup and driven more than one
million miles by Carl Judice of New Iberia, Louisiana. Carl points out
that he has never rebuilt the engine, nor removed the cylinder head from
his trusty pickup truck. Real world testing and customer satisfaction
doesn’t get any better than that. Click here
for more information on Carl and his million mile truck.
Never Replace Your Air Filter Again
Handmade in the USA and in the United Kingdom using only the finest materials,
K&N OE Replacement Air Filters are washable and reusable. Regardless
of what you’ve heard, it’s almost impossible to wash your K&N Air Filter too
much. Inside our testing laboratory, we have washed and re-oiled one K&N
Air Filter more than 100 times and it still performs up to specification.
Depending on your driving conditions, we recommend cleaning your air filter every
50,000 miles. To clean and re-oil, purchase our filter
service kit and follow the easy instructions.
Fuel economy testing and mileage claims are a tricky business. Just ask the EPA,
whose website states, “EPA’s fuel economy estimates are designed to allow
consumers to comparison shop. Your fuel economy will almost certainly vary
from EPA’s fuel economy rating. This is based on a number of factors, such
as weather, road conditions, your driving and maintenance habits, and your use
of air conditioning.” A lot of
exaggerated claims are made in the marketplace by products claiming to improve
gas mileage. K&N makes no general fuel economy claims, however we encourage you
to try our air filter for yourself. Keeping air filter restriction as low as
possible can be an important tool, among others, for maintaining high mileage. For more info
read what some of our users have to say on the K&N
K&N Million Mile Limited Warranty® and Consumer Protection Pledge
K&N warrants its street vehicle OE Replacement Air Filters for one million miles. When used
properly and found to be defective, return your filter and the receipt from
purchase and K&N will replace it free of charge. K&N’s Consumer Protection Plan
goes one step further than its Million Mile Warranty. The performance
aftermarket has, at times, been plagued by car manufacturers and automotive
dealers that may attempt to discourage you from customizing your vehicle. They
prefer you buy OE parts and not modify your car or truck and have even been
known to void their own manufacturer’s warranty due to vehicle modification.
That sounds un-American to us, which is why K&N and the Magnuson-Moss Warranty
Act (more information here)
protect consumers from such denied warranty claims. When you buy an OE
replacement K&N High-Flow Air Filter or High-Flow Air Intake System you can be
confident your vehicle’s warranty will remain in effect. If you experience a
difficult dealership, K&N will resolve the issue so you won’t have to. The
following summarizes the K&N Consumer Protection Pledge:
K&N pledges to our customers that they will not be taken advantage of and
charged for a repair due to a dealership warranty denial blamed on the presence
of a K&N product..
See our pledge page for more details.
We believe K&N makes The World’s Best Air Filter and we stand behind that claim
See our air filter facts page for more information.
K&N Replacement Automotive & Powersports Air Filter information by part series: 33, AC, AL, AT,
K&N air filters are
available for the following car, truck, SUV, van, motorcycle, dirt
bike, and ATV makes: ACURA, ALFA ROMEO, AMC, AM-GENERAL,
AUDI, AUSTIN, AUSTIN HEALEY, BMW, BUICK, CADILLAC, CHEVROLET, CHRYSLER, CITROEN,
DAEWOO, DAIHATSU, DODGE, EAGLE, FERRARI, FIAT, FORD, GEO, GMC, HARLEY DAVIDSON, HONDA, HYUNDAI, INFINITI,
INTERNATIONAL, ISUZU, JAGUAR, JEEP, KIA, LAMBORGHINI, LANCIA, LAND ROVER, LEXUS,
LINCOLN, LOTUS, MASERATI, MAZDA, MERCEDES BENZ, MERCURY, MERKUR, MG, MITSUBISHI,
NISSAN, OLDSMOBILE, OPEL, PEUGEOT, PLYMOUTH, PONTIAC, PORSCHE, RENAULT, ROVER, SAAB,
SATURN, SEAT, SSANGYONG, SUBARU, SUNBEAM, SUZUKI, TALBOT, TOYOTA, TRIUMPH, VAUXHALL,
VOLKSWAGEN, VOLVO, YAMAHA, and YUGO.