Mack MP8 6 Cylinder 12.8 L Diesel 505 hp Engine, 2017 US EPA Label, Engine Brake, Mack Maxitorque ES 18-Speed Manual Transmission, Differential Lock, 5997 lb Front Axle, 20000 kg Rears, 25997 kg GVWR, Air Ride Cab, 56 in Mid Roof Sleeper Cab, Aluminum Wheels, 11R24.5, Air Ride Suspension, 244 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks, Hour Meter Reads CNV