aFe Power Momentum GT 54-76003 Toyota Tundra Performance Intake System (Oiled, 5-Layer Filter) Outflows the factory intake by up to 38%. Produces an additional 20 horsepower and 33 lbs. x ft. torque max gains. 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power One-piece sealed housing with auxiliary air scoop and built in sight window Unique (Patent Pending) filter-to-housing interface for easy installation 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.