57 Series FIPK Air Intake SystemDodge Dakota/Durango 4.7L+ 8.01 HP increaseStreet Legal In All US States-CARB EO Number: D-269-28 Guaranteed to increase horsepowerDesigned to improve throttle response and engine soundLasts up to 100,000 miles before service is required (depending on driving conditions)Replaces entire factory air intake systemFree-flowing high density polyethylene tubeEasy to install, usually in 90 minutes or lessWashable and reusable lifetime air filterK&N Million Mile Limited Warranty.