Item Location: Hartville, Mo Principal contact: Tommy K. CLICK HERE TO WATCH VIDEO Caterpillar 12H Road Grader Pin: CAT0012HP4XM03335 3306 Caterpillar Diesel Engine. Engine serial: 6NC33568 Hours read: 16,337 Transmission serial: 4MY14323 14' Moldboard Notes: Unit has a couple Hydraulic leaks.