Casco integral de fibra de capartment. 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