Banks 42185 Ram Air Intake SystemThis ram air intake upgrade features an enclosed housing that keeps out hot, power-robbing engine air; so your truck inhales cooler, denser outside air. Improves flow up to 31% for greater power and MPG; helps engine run cooler and cleaner. The giant synthetic dry or oiled filter flows more freely than the factory's highly dense paper filter, and the aerodynamic shape eliminates restrictions. Works seamlessly with stock sensors to not generate trouble codes. Accommodates engine movement for greater durability.Easy install; reusable filter is easy to access for monitoring and cleaning. (By contrast, the stock filter is difficult to access, not reusable, and when dirty, requires replacement of the whole expensive unit!) Unit is triple validated before the name "Banks" is stamped on. We test; the other guys don't. That's the Banks difference!