aFe Power Magnum FORCE 51-12402 Dodge RAM HEMI Performance Intake System (Dry, 3-Layer Filter) Outflows the factory intake by up to 27% . Produces an additional 18 horsepower and 23 lbs. x ft. torque 3-Layer non-oiled, washable synthetic media for the perfect balance of performance, protection and convenience Heat shield snaps onto the top of the lower half of the factory air box 3-1/2" diameter black powder-coated aluminum tube