2011 Allison 1000HS, Truck Delivery, Transmission ECMs, Fits to: Workhorse Custom Chassis W62, (Used) 2011 Allison (AT), TRANSMISSION ECM- ECM Model: A51, Part Number: 29545536, Serial Number: BK5536N1116405E5, 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# BK5536N1116405E5, Casting# BK5536N1116405E5, Truck Year 2011 5B4LFG2E9B3446295