aFe Power Magnum FORCE 54-10192 Ford Diesel Truck 99-03 V8-7.3L (td) Performance Intake System (Oiled, 5-Layer Filter) In testing, produced 12 additional horsepower and 43lbs. x ft. torque 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power Durable 18 gauge, powder-coated patented heat shield/air box includes a battery relocating tray Heat-insulating molded plastic tube replaces the stock intake tract This product is 50-state legal (CARB E.O Number D-550-4)