Detroit DD15 6 Cylinder 14.8 L Diesel 455 hp Engine, Requires Diesel Exhaust Fluid, Eaton Fuller 10-Speed Manual Transmission, 14320 lb Front Axle, 44000 lb Rears, Meritor Drive Axles, 3.29:1 Axle Ratio, 58320.0 lb GVWR, 11R24.5, Air Ride Suspension, 217 in Wheelbase, 87 in Cab to Axle, 151 in Cab to End of Frame