Cummins 6 Cylinder Diesel Engine, Requires Diesel Exhaust Fluid, Automatic Transmission, 12000 lb Front Axle, 21000 lb Rears, 33000 lb GVWR, Air Ride Cab, 11R22.5, International IROS Air Ride Suspension, 264 in Wheelbase, Carrier Reefer Unit, 28 ft x 102 in Wide x 102 in High Body, Liftgate