Detroit DD15 6 Cylinder 14.8 L Diesel 475 hp Engine, 19513 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller RTLO-16918B 18-Speed Manual Transmission, Differential Lock, 12350 lb Front Axle, 40000 lb Rears, 3.70:1 Axle Ratio, 52350 lb GVWR, Air Ride Cab, 48 in Mid Roof Sleeper Cab, Aluminum Front Wheels, 11R22.5, Air Ride Suspension, 217 in Wheelbase, Air Sliding 5th Wheel, Headache Rack, Dual Fuel Tanks