(Used) 2003 Allison (AT), TRANSMISSION ASSEMBLY- REMANUFACTURED- Model: HD 4000, Serial Number: 9430010767, Assembly Number: 29543116, Engine: Detroit Series 60, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921