Flow Bench Tested
The K&N air filter has been shown to increase airflow over open induction systems in laboratory testing. Even dirty K&N filters outperform most new conventional filters.

Increase in Performance
The unique K&N design decreases restriction allowing improved airflow and power.

Low Restriction
Multi-layer design allows dust and dirt to remain trapped on the outer surface of the filter while the air easily passes through.

Time Efficient
K&N air filters typically can go 30,000-50,000 miles before requiring cleaning. You would generally have to change a paper filter 3 to 5 times during this same distance.

K&N air filters are actually less expensive in the long run, because they are designed for years of use and repeated cleanings.

Resistant to Backfire
The K&N air filter will not ignite due to an engine backfire through the carburetor.

Complete Selection
There is a K&N replacement element, custom air cleaner unit and crankcase vent for virtually every popular model auto, truck, motorcycle and RV.

Using the proper size K&N air filter, no loss in horsepower is noticed and in some cases the horsepower actually increases over no filter at all.

American Made
K&N air filters are manufactured in the United States under rigid quality control standards. Racer Endorsed
From the grueling Baja 1000 offroad race, to oval tracks around the country, to high speed Daytona and Indy racing, K&N filters are the choice of professional racers.

Great Performance for 1,000,000 miles
Stock OEM replacement K&N air filters are warranted for 10 years or one million miles.

Ecologically Efficient
K&N air filters can be cleaned and re-used many times, therefore saving precious natural resources and not adding to the massive waste piling up in landfills.

Resistant to Moisture
Rain and mist are atomized as they pass through the K&N oiled fabric element. Even when completely wet, K&N air filters continue to breathe.

When it was first developed in 1962, the K&N Filtercharger® was a true design breakthrough in air filtration technology. Today, it still is. Because K&N's Filtercharger® can actually double air flow, which, in turn, adds up to 15 extra horsepower.

The secret lies in the K&N Filtercharger®'s unique design. Conventional filters use paper or foam material permeated with millions of tiny, irregular passages, that screen dirt particles out of the air. Because the dirt particles are trapped inside the passages, they eventually clog; and when this occurs, airflow restriction increases dramatically.

With the Filtercharger®, a special cotton fabric is sandwiched between the pleated aluminum screen wires. The pleated design provides five times more filtering surface over the element circumference. The cotton/screen wire filter media is then saturated with a formulated air filter oil.

Acting like a fluid curtain, this oil attracts particles of dirt and debris which build up on the outside of the filter. This buildup of dirt particles suspended in oil creates more and more irregular passages that actually create an additional filtering barrier with use. Not until very fine particles close this secondary "filter layer" does the filtercharger begin to clog.

In most cases, up to 1/8" of dust can cover a Filtercharger® before performance is significantly affected. On a street driven vehicle, a Filtercharger® can last up to 50,000 miles before service is required. Then, because it's made of reusable materials, you can just clean it, apply fresh K&N Filter Oil and Re-install.

Of course, K&N has developed biodegradable cleaning products designed to effectively clean the filter without harming the environment through the absence of fluorocarbons.

More air flow, increased horsepower, long lasting performance - even after 35 years, the K&N Filtercharger® is still on the cutting edge of air filtration technology.