Cummins ISX15 6 Cylinder 12.8 L Diesel 455 hp Engine, 2013 US EPA Label, CARB Compliant, Requires Diesel Exhaust Fluid, Cruise Control, Power Windows, Digital Mirrors, Exhaust Brake, Manual Transmission, 10000 lb Front Axle, 40000 lb Rears, Dana Drive Axles, 3.89:1 Axle Ratio, 67000 lb GVWR, Air Ride Cab, Aluminum Wheels, 11R22.5, 230 in Wheelbase, 30 ton Capacity, Front Mounted