(Used) 2007 Allison 200HS TRANSMISSION ECM - Part Number: 29545322, Serial Number: BK5322N169299L8RX, BK4773N16299L8RX, TCM Calibration: A41002GR, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921