Detroit 6 Cylinder Diesel Engine, 2023 US EPA Label, CARB Compliant, Engine Brake, Eaton Fuller 18-Speed Transmission, Differential Lock, 14320 lb Front Axle, 46000 lb Rears, 60320 lb GVWR, Air Ride Cab, 34 in Flat Top Sleeper Cab, Aluminum Outer Wheels, 11R24.5, Airliner Air Ride Suspension, 244 in Wheelbase, Wet Kit, Air Sliding 5th Wheel, Headache Rack