Detroit DD15 6 Cylinder 14.8 L Ultra Low Sulfur Diesel 455 hp Engine, 2012 US EPA Label, Requires Diesel Exhaust Fluid, 25219.2 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller Manual Transmission, 13200 lb Front Axle, 40000 lb Rears, 3.70:1 Axle Ratio, 53200 lb GVWR, Air Ride Cab, 48 in Flat Top Sleeper Cab, Aluminum Wheels, 11R22.5 Front Tires, 11R22.5 Rear Tires, Air Ride Suspension, 240 in Wheelbase, Air Sliding 5th Wheel