Cat 3406E 14.6 L Diesel Engine, Air Conditioner, Cruise Control, Engine Brake, Eaton Fuller RTX16709B 9-Speed Manual Transmission, Meritor RT-40-145 Drive Axles, 3.73:1 Axle Ratio, Air Ride Cab, 72 in High Rise Sleeper Cab, Bunk Beds, Aluminum Wheels, 285/75R24.5, Airglide Air Ride Suspension, 229 in Wheelbase, Air Sliding 5th Wheel, Headache Rack, Dual Fuel Tanks