Cummins ISC 285 6 Cylinder 8.3 L Diesel Engine, Allison 3500 Automatic Transmission, 6623 kg Front Axle, 10433 kg Rears, 6.14:1 Axle Ratio, 17055 kg GVWR, Aluminum Wheels, 315/80R22.5 Front Tires, 11R22.5 Rear Tires, Air Ride Suspension, 238 in Wheelbase, 12390 lb Capacity, Center Mounted, 7 ft 1 in - 40 ft 4 Section Boom, Dual Controls, Out and Down Outriggers, 20 ft x 96 in Bed, Hour Meter Reads CNV