(Used) 2019 Allison (AT), TRANSMISSION ECM- ECM Model: A61, Part Number: 29556882, Serial Number: BK6882A192285759, 10R-042849, 12 Volts, Transmission Stock #P-66691, Transmission Model: 2500RDS, 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