(Used) 1999 Allison, TRANSMISSION ASSEMBLY- Model: 1000 SERIES, Serial Number: 6310004284, Part Number: E004079, Engine: Cummins ISB5.9, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY ELKTON, MD 21921