Detroit DD15 6 Cylinder 14.8 L Diesel 505 hp Engine, 2018 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Automatic Transmission, Double Differential Locks, 13220 lb Front Axle, 40000 lb Rears, 53220 lb GVWR, Air Ride Cab, 60 in High Rise Sleeper Cab, Bunk Beds, Bunk Heater, Aluminum Wheels, 11R22.5 Front Tires, 11R22.5 Rear Tires, Air Ride Suspension, 234 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks, Ali Arc Front Bumper