2009 Allison 1000HS, Truck Delivery, Transmission ECMs, Fits to: Freightliner MT45 Chassis, (Used) 2011 Allison (AT), TRANSMISSION ECM- ECM Model: A51, Part Number: 29545536, Serial Number: BK5536N181810660, Transmission information- Model: 1000HS, Serial Number: N/A, 1 Rectangular Plug with 80 Pins, 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# BK5536N181810660, Casting# BK5536N181810660, Truck Year 2009 4UZAANDU29CAF4644