Detroit DD15 6 Cylinder Ultra Low Sulfur Diesel 505 hp Engine, 2022 US EPA Label, Requires Diesel Exhaust Fluid, Positive Air Shutoff, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Automated Transmission, Differential Lock, 12350 lb Front Axle, 40000 lb Rears, 52350 lb GVWR, Air Ride Cab, 60 in Mid Roof Sleeper Cab, 11R22.5 Front Tires, 11R22.5 Rear Tires, Air Ride Suspension