(USED) 2006 Freightliner M2 106 - TRANSMISSION ECM Base Part Number: 29543300. Serial Number: 20069136. Customer Part Number: W84014. Transmission: Allison 3000HS. For more information about this item, give us a call. We ship Worldwide!. (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY. ELKTON, MD 21921.