Caterpillar 120 Pin ECM View cart “Cummins CM550 ISB 5.9L ECM Dual Plug” has been added to your cart. $10.00 No Damaged Units Caterpillar 120 Pin ECM quantity Sell us this item Category: ECM Related products Detroit Diesel ECM DDEC III $15.00 Sell us this item Cummins Celect ECM 3084473 3619037 $75.00 Sell us this item Cummins EGR ISX CM850 ECM–Buying All Part Numbers! $10.00 Sell us this item Caterpillar 40-pin $10.00 Sell us this item