aFe Power Momentum GT 54-74103 GM Silverado/Sierra Performance Intake System (Oiled, 5-Layer Filter) Outflows the factory intake by up to 19% . Produces an additional 8 max horsepower and 11 lbs. x ft. torque 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power Smooth one-piece sealed housing with auxiliary air scoop and built-in sight window Does NOT Fit Vehicles Equipped with mechanical Fan This product is 50-state legal (CARB E.O Number D-550-13)