The Jammer Cold-Air Intake system combines a 3-1/2" diameter black powder-coated aluminum tube and a massive 7-1/2" Dry filter with an inverted top to generate 30 percent more airflow. The Jammer Dry filter is a 3-layer progressive, synthetic gauze filter that requires no oils and cleans with simple soap and water. The air intake is enclosed in a durable 18-gauge heat shield that utilizes the lower half of the factory air box that requires no assembly.