Cummins N14 6 Cylinder Diesel Engine, US EPA Label, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Meritor 10-Speed Manual Transmission, 12000 lb Front Axle, 40000 lb Rears, 52000.0 lb GVWR, Air Ride Cab, 56 in Mid Roof Sleeper Cab, Thermo King Auxiliary Power Unit, 275/80R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 226 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks