Detroit Series 60 12.7 L 500 hp Engine, Eaton Fuller 18-Speed Manual Transmission, 4.30:1 Axle Ratio, Air Ride Cab, 34 in Flat Top Sleeper Cab, Aluminum Wheels, 11R24.5, Central Tire Inflation System, Air Ride Suspension, 230 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks, Webasto Engine Heater