aFe Power Magnum FORCE 54-10542 Ford Motorhome Performance Air Intake System (Oiled, 5-Layer Filter) Outflows the factory intake by up to 79%. Produces an additional 20 horsepower and 25 lbs. x ft. torque max gains 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power Black powder coated heat shield Heat-insulating molded plastic tube replaces the stock intake tract This product is 50-state legal (CARB E.O Number D-550-3)