Cummins 6 Cylinder Diesel Engine, 49171.4 Engine hrs, Air Conditioner, Automatic Transmission, 12000 lb Front Axle, 70000 lb Rears, Meritor Drive Axles, 7.83:1 Axle Ratio, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 114 in Wheelbase, Hydraulic Lift 5th Wheel