2007 Allison 2200HS, Truck Delivery, Transmission ECMs, Fits to: Workhorse Custom Chassis W62, (Used) 2007 Allison (AT), TRANSMISSION ECM- ECM Model: A40, Part Number: 29545321, Serial Number: BK5321N072021AT0, Transmission information- Model: 2200HS, Serial Number: 6310810908, 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# BK5321N072021AT0, Casting# BK5321N072021AT0, Truck Year 2007 5B4MPG2GX73430682