(Used) 2000 Allison (AT), TRANSMISSION ASSEMBLY- Model: 1000 SERIES, Serial Number: 6310054088, Part Number: E004506, Engine: Cummins ISB, 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