Cummins 6 Cylinder Diesel Engine, Engine Brake, Eaton Fuller 9-Speed Manual Transmission, Air Ride Cab, 48 in Flat Top Sleeper Cab, Aluminum Wheels, 11R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 214 in Wheelbase, Air Sliding 5th Wheel, Headache Rack, Dual Fuel Tanks