6 Cylinder 12.8 L Diesel 505 hp Engine, 2017 US EPA Label, Positive Air Shutoff, Engine Brake, Mack mDrive Automatic Transmission, Differential Lock, 6623 kg Front Axle, 22680 kg Rears, 29303 kg GVWR, Air Ride Cab, 60 in Mid Roof Sleeper Cab, Bunk Heater, Aluminum Wheels, 11R24.5, Air Ride Suspension, 287 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks, Hour Meter Reads CNV