(Used) 2006 Allison, TRANSMISSION ASSEMBLY- Model: 3500 SERIES, Part Number: 29544865, Serial Number: TMG027859-1, Engine: Caterpillar 3126, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921