The spirit of the competition will invade lopped with a cabin air filter. To determine if your vehicle has a cabin air filter you should first check your owner's manual. You can also inspect the vehicle for the location of the cabin air filter which is typically located in one of three places: Under the hood, near the windshield Under the dashboard Under the glove box How to Replace a Cabin Air Filter Most cabin air filters can be replaced without tools but some require basic hand tools to open the cabin air filter compartment. Detailed installation instruction sheets and videos are provided on the specific product web page for the filter that matches your vehicle. Cleaning the K&N Washable Cabin Air Filter K&N recommends maintaining your washable cabin air filter every 12 months or 12,000 miles. This is similar to the typical recommended replacement interval for a disposable cabin air filter. Cleaning your washable K&N cabin air filter requires the use of a K&N Refresh Pack by following these simple steps: 1. Remove the filter from your vehicle 2. Spray the cabin filter cleaner on the filter 3. Rinse the filter with water to remove all dirt 4. Dry naturally for 20-30 minutes 5. Apply K&N cabin air filter freshener to the filter media 6. Place the filter back into your vehicle