(Used) 2000 Cummins ISB, ENGINE ECM- Part Number: 3944124, Serial Number: 2030372, ECM Code: J90669.12, Engine Information- Displacement: 5.9L, ESN: 56743096, 2 Rectangular Plug with 50 Pins each!! Reference images for condition. For more information about this o, give us a call. We ship worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921