KN Performance Air Filter For Dodge ~ Ram Pickup ~ 1994-2002 ~ ~ 5.9L L6 Diesel Filters are washable and reusable, and will protect your engine for the life of your vehicle. Lasts up to 50,000 miles before cleaning is required depending on driving conditions. Designed to Increase Horsepower and Acceleration and has High Air Flow with Excellent Filtration 10 Year / Million Mile Limited Warranty - Will not Void Vehicle Warranty. Filter is a unit of 1 unless otherwise noted in description.