Caterpillar C9, ECMs, (GOOD USED & BENCH TESTED) Caterpillar C9 ECM Part # 196-4170 For Sale, 70-PIN, CAT C9 ECM, MTB Serial Number Prefix, 1964170, REMAN Part # 10R4091-02, 10R4091 02, 10R409102, Serial # 3058L018IE, Stock # 8020