(Used) 2004 Allison (AT), TRANSMISSION ECM- Part Number: 29542725, Serial Number: BKDYPSM141832CUS, Model: 2400, Serial Number: 6310419118, Part Number:E004583, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921