Navistar 6 Cylinder Diesel Engine, 2016 US EPA Label, Engine Brake, Allison Automatic Transmission, Differential Lock, 18000 lb Front Axle, 40000 lb Rears, 58000 lb GVWR, Aluminum Wheels, Dual Steering Boxes, Hendrickson Haulmaax Rubber over Walking Beam Suspension, 215 in Wheelbase, 15 ft Long x 40 in High Steel Body, Electric Roll Tarp