(Used) 2006 Allison (AT), TRANSMISSION ECM- Part Number: 29542725, Serial Number: BKDYPSM160875R41, Transmission Model: 2200HS, Serial Number: 6310643253, 2 Rectangular Plug with 32 Pins each, Reference images for condition. For more information about this item, give us call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921