Banks 42155 Ram Air Cold Air IntakeBanks Ram-Air Intake System outperforms the rest on the 6.0 Powerstroke and flows up to better than stock! The system's dome-shaped cotton gauze filter flows more freely than the factory's highly dense paper filter, and the contoured, aerodynamic shape eliminates restrictive sharp bends and choke points. Designed to work seamlessly with stock sensors and not generate trouble codes. Utilizes factory bellows to accommodate engine movement for greater durability. Easy install; the reusable filter is easy to access for monitoring and cleaning. (Unlike the stock filter, which is difficult to access ... not reusable ... and when dirty, requires replacement of the whole expensive unit!) Lifetime warranty on filter element.