"The Classic" Cone Air Filters from Vibrant Performance feature a premium 4 ply pleated cotton-gauze filter element to provide significantly more airflow than a stock filter while providing excellent filtration of airborne dirt that could damage your motor. This universal filter comes pre-oiled and is washable and reusable. For maximum benefit, it's recommended to clean the filter every 10,000-15,000 miles, depending on conditions. In harsher environments servicing more frequently is highly recommended to maintain optimum performance. Manufactured in the USA and includes a Limited Lifetime Warranty.