Engines | Mounts, , CAT C12, Engine ECM, (TESTED WITH WARRANTY) CATERPILLAR C12 DIESEL ENGINE 70-PIN ECM FOR SALE, 70-PIN, ENGINE SERIAL # 2KS23078, PERSONALITY MODULE PART # 1666913-01, PERSONALITY MODULE CODE 3, PERSONALITY MODULE RELEASE DATE DEC98, ECM SERIAL # 03890131KA, STOCK # 1867 | ALL OUR ECMS ARE TESTED AND SHIP PRIORITY MAIL! COMES WITH WARRANTY! CONTACT US FOR MORE INFORMATION! OVERNIGHT SHIPPING OPTIONS ARE AVAILABLE! WE ALSO OFFER PROGRAMMING FOR PLUG & PLAY!