Mack MP8 6 Cylinder 12.8 L Ultra Low Sulfur Diesel 455 hp Engine, 2012 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Engine Brake, Eaton Fuller FRO-16210C Manual Transmission, 12000 lb Front Axle, 40000 lb Rears, 52000 lb GVWR, Air Ride Cab, Aluminum Front Wheels, 10R22.5 Front Tires, 11R24.5 Rear Tires, Air Ride Suspension, 184 in Wheelbase, Air Sliding 5th Wheel, Headache Rack