(Used) 2010 Allison (AT), TRANSMISSION ECM- ECM Model: A51, Part Number: 29545536, Serial Number: BK5536N1015403D6, 12 Volts, A5100QPP, CIN: 4C00QPP001K, Transmission Stock #P-73462, Transmission Model: 2200HS, 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