Cummins 6.7L Ultra Low Sulfur Diesel Engine, Automatic Transmission, Air Conditioner, Cruise Control, 7,250 lb Front Axle, 13,500 lb Rears, 19,500 lb GVWR, 225/70R19.5 Tires, Spring Suspension, 170 in Wheelbase, 10 ft 7 in Body, Ingersoll-Rand 2475 Gasoline Air Compressor