(Used) 2011 Detroit DD13, ENGINE ECM- ECM Model: MCM2.1, Part Number: A 001 446 28 35 / 002 Serial Number: A2C7422750000153820534, HW: D2, SW: - - -, Engine Information, Horsepower: 505, Serial Number: 472910S0689028, (2 Plugs) 1 Plug Pins: 120 Pins Plug, 1 Plug Pins: 21 Pins Plug, Reference images for condition. For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921