(Used) 2006 Allison (AT), TRANSMISSION ASSEMBLY- Model: 1000, Serial Number: 9630027638, Part Number: 29544726, Engine: Cummins ISB 5.9 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