aFe Power Magnum FORCE 54-81332 GM Diesel Truck 07.5-10 V8-6.6L (td) LMM Performance Intake System (Oiled, 5-Layer Filter) Outflows the factory intake by 51% . Produces an additional 12 horsepower and 25 lbs. x ft. torque 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power Heat-shielding molded plastic housing with auxiliary inlet duct and an attractive brushed aluminum cover Heat-insulating molded plastic tube replaces the stock intake tract This product is 50-state legal (CARB E.O Number D-550-4)