Detroit DD13 6 Cylinder 12.8 L Diesel 525 hp Engine, 2016 US EPA Label, CARB Compliant, Requires Diesel Exhaust Fluid, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, Differential Lock, 12000 lb Front Axle, 21000 lb Rears, 33000.0 lb GVWR, Air Ride Cab, Aluminum Wheels, 295/75R22.5, AirLiner Air Ride Suspension, 156 in Wheelbase