(Used) 2006 Allison (AT), TRANSMISSIIN ECM- ECM Model: A41, Serial Number: BK4773N16191EVZY, Part Number: 29544773, Model: 2200HS, Serial Number: 6310686890, 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