(Used) 2010 Allison (AT) 2200RDS, TRANSMISSION ECM- Model: A51, Serial Number: BK5536N1006008C9, Part Number: 29545536, Voltage: 12V, Pin Plug: 80 Pins, Rectangular Plug, For more Information about this item, give us a call. We ship Worldwide ! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON , MD 21921