Cummins ISM 10.8 L Diesel Engine, US EPA Label, 21914.75 Engine hrs, Air Conditioner, Cruise Control, Allison 6-Speed Automatic Transmission, Differential Lock, 21000 lb Front Axle, 46000 lb Rears, Aluminum Wheels, 425/65R22.5 Front Tires, 11R22.5 Rear Tires, 3 Steerable Air Lift Pusher Axle, Double Frame, Rubber over Walking Beam Suspension, 212 in Wheelbase, PTO