2011 Allison 2200HS, Truck Delivery, Transmission ECMs, Fits to: Workhorse Custom Chassis W62, (Used) 2010 Allison (AT), TRANSMISSION ECM- ECM Model: A51, Part Number: 29545536, Serial Number: BK5536N1017003A5, Transmission information- Model: 2200HS, Serial Number: 1371210, Plug Pins: 80 Pins Plug Rectangular, 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# BK5536N1017003A5, Casting# BK5536N1017003A5, Truck Year 2011 5B4MFG2E7B3442587