Cummins ISB 3.9 L Dual Fuel 170 hp Engine, 2002 US EPA Label, Automatic Transmission, 4700 lb Front Axle, 5900 lb Rears, 10000 lb GVWR, 225/70R19.5 Front Tires, 225/70R19.5 Rear Tires, Spring Suspension, 177 in Wheelbase, 18 ft x 96 in Wide x 84 in High Body