(Used) 1992 Allison (AT), TRANSMISSON ASSEMBLY- Model: MT643, Serial Number: 2410468835, Part Number: 29507186, Engine: Cummins 6CTA8.3, 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