K&N Cabin Air Filters The K&N Washable Cabin Air Filter is the first of its kind designed to replace your vehicle's stock cabin air filter with a washable and reusable version that cleans and freshens incoming air. Watch the video above for more information on how cabin air filters work. K&N Cabin Air Filters are designed to be cleaned and reused over and over again. Using a combination of an advanced synthetic filter media and K&N Refresher™ spray, the K&N Washable Cabin Air Filter grabs and holds dust particles.
