aFe Power Magnum FORCE 54-32332 GM Silverado/Sierra Performance Intake System (Oiled, 5-Layer Filter) Outflows the factory intake by up to 30% . 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power Durable 18-gauge heat shield that utilizes the lower half of the factory air box Black powder-coated aluminum tube replaces the stock intake tract