Cummins ISX 455ST 15.0 L Diesel Engine, US EPA Label, Positive Air Shutoff, 8955 Engine hrs, Engine Brake, Eaton Fuller 18-Speed Manual Transmission, Differential Lock, 7257 kg Front Axle, 10864 kg Rears, 28122.0 kg GVWR, Air Ride Cab, 51 in Flat Top Sleeper Cab, Aluminum Wheels, 385/65R22.5 Front Tires, 11R24.5 Rear Tires, 4-Bag Air Ride Suspension, 280 in Wheelbase, Headache Rack, Dual Fuel Tanks