'03-'06 Dodge Cummins "Torque Tube" replaces the stock intake tract with a 4" mandrel-bent, powder-coated corrosion-resistant aluminized steel tube. With a throaty "big rig" sound, the afe "Torque Tube" smoothes out the intake and increases airflow up to 200 cfm. Easy to install and color-matched to aFe's air intake kit, this Torque Tube not only increase performance but also enhances the appearance of your engine compartment.