6 Cylinder Ultra Low Sulfur Diesel Engine, Requires Diesel Exhaust Fluid, 16655 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Mack mDrive Automatic Transmission, 12000 lb Front Axle, 40000 lb Rears, 52000 lb GVWR, Air Ride Cab, 70 in Mid Roof Sleeper Cab, Bunk Beds, 295/75R22.5 Front Tires, 275/80R22.5 Rear Tires, Air Ride Suspension, 228 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks