Let your Dodge, Ford or Chevy diesel truck breathe with aFe Air Intake Systems, your truck will thank you for it. aFe Power Intakes allow maximum flow of cool air into your diesel engine with systems designed to fit perfectly in place of the factory air boxes. The Stage-1 Intake directly replaces your factory box, while utilizing the OEM intake tube. The Stage-2 system replace the factory air box and intake tube with a rotomolded tube that increases air volume with unrestricted flow. The Stage-2 Si Intake System is a fully sealed 2-piece design that is designed to keep warm under-hood air out of the intake while allowing only cool air to flow through to the turbo. Each intake system comes with one of aFe's technologically engineered air filters, for unsurpassed power, torque and fuel economy. Each aFe Air Intake System was designed to allow maximum air flow into your diesel truck and we think you'll love your truck's response.