Mack MP8 6 Cylinder 12.8 L Ultra Low Sulfur Diesel 505 hp Engine, 2011 US EPA Label, CARB Compliant, Requires Diesel Exhaust Fluid, 21822 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Mack 12-Speed Automated Transmission, 12000 lb Front Axle, 40000 lb Rears, 52000 lb GVWR, Air Ride Cab, 56 in High Rise Sleeper Cab, Bunk Heater, Aluminum Wheels, 11R22.5, Air Ride Suspension, 240 in Wheelbase, Air Sliding 5th Wheel