0 Allison 2500PTS, , Transmission ECMs, Fits to: , (Used) 2021 Allison (AT), TRANSMISSION ECM- ECM Model: A61, Part Number: 29556882, Serial Number: BK6882A112315331, 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# BK6882A112315331, Casting# BK6882A112315331, Part# 29556882