(Used) 2009 Cummins ISX, ECM- Serial Number: B0501129, Part Number: P3684275-RX, Family Number: 9CEXH0912XAK Horsepower: 450, Model:: DR6436-RX, ESN: 60815102, CPL: 2732, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921