(Used) 2011 Allison (AT), TRANSMISSION ASSEMBLY- Model: 2500PTS, Serial number: 6310994580, Engine: Cummins ISB 6.7, 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