Caterpillar C12, ECMs, (TESTED W/ WARRANTY) Caterpillar C12 ECM Part # 348-2379-01 For Sale, 70-PIN, Personality Module Part # 2157817-00, 2KS-Serial, Pulled off CAT C12, Engine Serial # 2KS19920, ECM Serial # 1292B046IH, Stock # 4210