Cat C15 6 Cylinder 14.6 L Diesel Engine, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller RTLO-16913A 13-Speed Manual Transmission, Differential Lock, 12350 lb Front Axle, 38000 lb Rears, 50350 lb GVWR, Air Ride Cab, 70 in High Rise Sleeper Cab, Bunk Beds, Aluminum Outer Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 242 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks