Historically, air filters have not received a whole lot of attention or comparative analysis. They were designed to provide adequate engine protection at an inexpensive cost - Hence, the disposable air filter covered the need. K&N's understanding of the value and importance of engine performance led us down a very different path.

While other air filter companies sold disposable filters, asking consumers to waste money through the endless cycle of buy, throw away and re-buy. K&N took the road less traveled by selling consumers a lifetime air filter that never needed to be replaced and that was designed to improve performance.

It is very easy to build a filter that has a "K&N look" even if the materials used are completely different. It has gone on for years and we cringe every time we see a counterfeit that is of low quality. When comparing air filters, you must consider the efficiency, capacity and airflow values and you must know how they were measured.

It almost seems incredible that a cotton air filter can provide such high filtration efficiency while dramatically increasing airflow. When you pick one up and hold it to a light source, you can literally see light passing through the filter medium. It would be natural to assume this high flow medium sacrifices filtration ability and yet it does not.

Just like nature, cotton gets complicated the deeper you look. How cotton is kneaded and combined at a strand level impacts how many microfilaments are contained in a linear inch.

All K&N Air Filters are washable and reusable. Your normal driving environment will determine when you should clean your air filter. If you drive in a non-dusty wet environment with lots of trees and vegetation, we recommend you inspect your filter every 50,000 miles. If you live in dry or desert conditions, we recommend you inspect your filter every 30,000 miles.

K&N replacement air filters and air intake systems are built to last for the life of your vehicle and are backed up by the world's first million mile limited warranty.

We want to make sure that when you buy a K&N Air Filter or Intake System, you can be confident your vehicle's warranty will not be impacted. We also want you to feel confident that even if you experience a unreasonable dealership, we will step-in and resolve the issue, so you won't have to.

K&N air filters will not void a vehicles manufacturer's warranty. They are high quality replacement parts and automotive or motorcycle dealerships cannot void a consumers warranty solely based on the existence of an aftermarket product.

K&N has a great application lookup tool available at our Web Site KNFilters.com. Data is also available to dealers in various formats.