Detroit DD13 6 Cylinder 12.8 L Ultra Low Sulfur Diesel 525 hp Engine, 2020 US EPA Label, Requires Diesel Exhaust Fluid, Allison Automatic Transmission, 20000 lb Front Axle, 46000 lb Rears, 66000 lb GVWR, Air Ride Cab, Aluminum Wheels, 425/65R22.5 Front Tires, 11R22.5 Rear Tires, Dual Steering Boxes, TufTrac Suspension, 228 in Wheelbase, PTO, Double Frame, Holcombe HM10H 10 cyd Mixer Unit