Learn more about the horsepower testing and validation process at K&N, and how to spot misleading claims from other advertisers.

One of the fastest ways to add more airflow, horsepower, and throttle response to your car is by installing a K&N intake kit.

Cheaper isn't always better. K&N reusable air filters are definitely worth the extra up-front cost, because they are designed to last for the entire lifetime of your vehicle. A K&N filter is a premium upgrade that is designed for the highest level of quality at every step in the manufacturing process, and tested to give you extra "oomph" from the off-road to the onramp.

Did you know that your car most likely has a cabin air filter? Most modern vehicles have a special filter—typically installed behind the glove box—that is designed to help prevent pollutants and contaminants in the exterior air from entering your vehicle’s cabin.

Cold air intake systems have long been considered one of the easiest ways to "bolt-on extra horsepower". All you have to do is unbolt the restrictive factory intake system, and replace it with a free-flowing cold air intake system. 

Learn how to quickly and easily re-oil your K&N oiled cotton air filter without over-oiling.

K&N offers performance oil filters designed for automotive, motorcycle, marine, and heavy-duty applications. Read on to learn about our precision-engineered filters, and to find the best K&N oil filter for you. Let us help take the guesswork out of your next oil change.

In wet, muddy, or dusty conditions, some extra filter protection can help provide peace of mind, and can also help increase time between filter cleanings. K&N® filter wraps and pre-filters help keep water and particles away from your filter—so you can enjoy the benefits of your high-performance K&N® air filter even under rigorous conditions.

For years, racers and daily drivers alike have relied on the outstanding performance of K&N oil filters to protect their engines from premature wear. With that in mind, K&N has recently engineered a new product offering—premium full synthetic motor oil, designed to offer you top-tier engine lubrication and protection.

Your new K&N® washable home air filter is designed for years of use. Here’s how you can quickly and easily clean your filter using only K&N® HVAC cleaner and a low-pressure hose!