Mack MP8 6 Cylinder 12.8 L Diesel 505 hp Engine, 2013 US EPA Label, Engine Brake, Mack mDrive Automatic Transmission, Differential Lock, 5443 kg Front Axle, 18144 kg Rears, 23587 kg GVWR, Air Ride Cab, 60 in Mid Roof Sleeper Cab, Bunk Heater, Aluminum Outer Wheels, 11R22.5, Air Ride Suspension, 221 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks, Hour Meter Reads 23814