aFe Power Magnum FORCE 54-80782 GM Diesel Truck  01-04 V8-6.6L (td) LB7 Performance Intake System (Oiled, 5-Layer Filter) Outflows the factory intake by 51% . Produces an additional 11 horsepower and 27 lbs. x ft. torque 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power Sealed intake box with auxiliary intake scoop Heat-insulating molded plastic tube replaces the stock intake tract This product is 50-state legal (CARB E.O Number D-550-4)