aFe Power Magnum FORCE 51-10512 Ford F-150 Performance Cold Air Intake System (Dry, 3-Layer Filter) Outflows the factory intake by up to 53%. Produces an additional 17 horsepower and 21 lbs. x ft. torque max gains 3-Layer non-oiled, washable synthetic media for the perfect balance of performance, protection and convenience Durable 16-gauge, one piece powder-coated heat shield Heat-insulating molded plastic tube replaces the stock intake tract This product is 50-state legal for 2004-2005 models (CARB E.O Number D-550-3)