(Used) 2007 Allison, TRANSMISSION ASSEMBLY- Model: 2000 RETRAN, Serial Number: 9730027147, Engine: MBE 926, Part Number: 29544719, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921