Cat C13 Ultra Low Sulfur Diesel Engine, Air Conditioner, Cruise Control, Power Windows, Meritor Manual Transmission, 12,000 lb. Front Axle, 23,000 lb. Rears, 35,000 lb. GVWR, Air Ride Cab, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 161 in. Wheelbase