Cummins 6 Cylinder Ultra Low Sulfur Diesel 450 hp Engine, 2018 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Automated Transmission, 13200 lb Front Axle, 40000 lb Rears, 53200 lb GVWR, Air Ride Cab, 56 in High Rise Sleeper Cab, Bunk Beds, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 228 in Wheelbase, Air Sliding 5th Wheel, Headache Rack, Dual Fuel Tanks