(Used) 2009 Allison, TRANSMISSION ASSEMBLY- Model: 2000 RETRAN, Serial Number: 9730030932, Part Number: 29544719, Engine: Mercedes MBE 926, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921