K And N's Aircharger Intake System for the 11-12 F250/ F350 Super Duty removes the restrictive stock air box and replaces it with a high flowing filter and pipe system. This setup has yielded gains of up to 11.92 HP and 22.44 lb-ft of torque to the wheels which is incredible for such a small and easy modification. The K And N 63 Series intake uses a plastic pipe to keep heat at a minimum for maximum gains out of the system. K And N's classic oiled cone filter provides excellent filtration along with the best flow on the market. K And N's million mile warranty reassures that this system will last a very long time.