aFe Power Magnum FORCE 54-12402 Dodge RAM HEMI Performance Intake System (Oiled, 5-Layer Filter) Outflows the factory intake by up to 27% . Produces an additional 18 horsepower and 23 lbs. x ft. torque 5-Layer progressively finer oiled, washable cotton gauze media allows maximum airflow for maximum power Heat shield snaps onto the top of the lower half of the factory air box 3-1/2" diameter black powder-coated aluminum tube