(Used) 2017 Allison (AT), TRANSMISSION ECM- ECM Model: A61, Part Number: 29556882, Serial Number: BK6882A173140125, 10R-042849 12 Volts, Transmission Model: 2500RDS, Serial Number: 6311600304, 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