The AFE "Torque Tube" for the 1994-2002 Dodge 5.9 Liter Cummins diesel is a Roto molded Polymer tube and silicone hose assembly that connects the Stage I intake system to the Cummins turbo changer assembly.
The "Torque Tube" provides the Cummins with increases, smoother air flow for more HP and torque as well as reduced EGT.
