(Used) 2006 Allison, TRANSMISSION ECM - Part Number: 29545321, Serial Number: BK5321N072202730 Model: 1000, Trans Serial Number: TMG037948-1, Trans Part Number: 29547852, Engine: GM 8.1L, Transmission: P-50576, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921