aFe Power Magnum FORCE 54-81174 Toyota Tundra Performance Intake System (Oiled, 5-Layer Filter) Outflows the factory intake by up to 50%. Produces an additional 19 horsepower and 27 lbs. x ft. torque max gains. 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power Sealed housing features an auxiliary air inlet duct Heat-insulating molded plastic tube replaces the stock intake tract This product is not CARB exempt at this time and is not legal for sale in California or use on vehicles registered with the California Department of Motor Vehicles.