Mack EM7 6 Cylinder 12.0 L Diesel 300 hp Engine, 2000 US EPA Label, 17107 Engine hrs, Eaton Fuller 8LL Transmission, 20000 lb Front Axle, 44000 lb Rears, Aluminum Front Wheels, 425/65R22.5 Front Tires, 11R22.5 Rear Tires, Camelback Spring Suspension, 205 in Wheelbase, PTO, 15 ft 6 in Long Steel Body, Air Powered Roll Tarp