Caterpillar 3406E, ECMs, (GOOD USED & BENCH TESTED W/ WARRANTY) Caterpillar 3406E Part # 117 4017-02 ECM For Sale, 40-PIN ECM, 5EK Serial, Part # 117 4017 02, 117401702, MKNDDL-NU, Off CAT 3406E, Personality Part # 1708146-00, ECM Serial # 26960028CJ, Stock # 8098 | Tested & Inspected!