2004 Allison 2100HS, Truck Delivery, Transmission ECMs, Fits to: Freightliner M2 106, (Used) 2007 Allison (AT), TRANSMISSION ECM- ECM Model: A41, Part Number: 29545322, Serial Number: BK5322N17120XWFD, Transmission information- Model: 2100HS, Serial Number: 6310788943, 1 Rectangular Plug with 80 Pins, 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, Serial# BK5322N17120XWFD, Truck Year 2004, VIN 1FVACWDCX4HN54628 1FVACWDCX4HN54628