(Used) 2006 Allison (AT), TRANSMISSION ECM - Part Number: 29545321, Serial Number: BK5321N071760GC0, Model: 2400 Transmission Serial Number: TGM038278-1 Transmission Part Number: 29547852 Transmission: P-47866, For more information about this item, give us a call. We ship worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921