0 Cummins ISM, , ECMs, Fits to: , (Used) Cummins ISM ENGINE ECM - Part Number: 3103533-RX, Serial Number: A6000792, ESN: 60431281, D/C: 1503, SC: 20777, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921, Serial# A6000792, Part# 3103533-RX,