(Used) 2006 Allison (AT), TRANSMISSION ECM- ECM Model: A41, Part Number: 29544773, Serial Number: BK4773N16167E2F4, 12 Volts, Transmission Stock #P-64970, Transmission Model: 1000 SERIES, 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