(Used) 2004 Allison, TRANSMISSION ECM- ECM Model: 29542725, Part Number: 29542725, Serial number: BKDYPSM1403711W9, Model: 1000HS, Serial number: 6310425164 2 Rectangular Plugs with 32 Pins, Reference images for condition For more information about this item, give us a call. We ship worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921