Vibrant Performance Classic Filters features a 4-ply cotton gauze filter element that allows for significantly more air flow than a stock filter while also providing excellent filtration of airborne particulate. Each filter has a temperature rating of 225° F (107° C), is pre-oiled, washable and reusable. It is recommended that the filter element is cleaned every 10,000 - 15,000 miles (16,000 to 24,000 kilometers)