For Reference only! 2004 EXPLORER Elec Cont Unit (ECU); (4 Dr), 6-245 (4.0L, AT), exc. Sport Trac; (RH firewall), ID 4L2A-MF thru MJ 2004 EXPLORER Elec Cont Unit (ECU); (4 Dr), 6-245 (4.0L, AT), exc. Sport Trac; (RH firewall), ID 4U7A-AUB and AUC 2004 EXPLORER Elec Cont Unit (ECU); (4 Dr), 6-245 (4.0L, AT), exc. Sport Trac; (RH firewall), ID 4U7A-GJA 2004 MOUNTAINEER Elec Cont Unit (ECU); (RH firewall), 6-245 (4.0L, AT), ID 4L2A-MF thru MJ 2004 MOUNTAINEER Elec Cont Unit (ECU); (RH firewall), 6-245 (4.0L, AT), ID 4U7A-AUB and AUC 2004 MOUNTAINEER Elec Cont Unit (ECU); (RH firewall), 6-245 (4.0L, AT), ID 4U7A-GJA Ident: 4L2A12A650MF Ident: 4L2A12A650MG Ident: 4L2A12A650MH Ident: 4L2A12A650MJ Ident: 4L2AMF Ident: 4L2AMG Ident: 4L2AMH Ident: 4L2AMJ Ident: 4U7A12A650AUB Ident: 4U7A12A650AUC Ident: 4U7A12A650GJA Ident: 4U7AAUB Ident: 4U7AAUC Ident: 4U7AGJA Please make sure to match the Part Number of the item with the one you have. All Modules have to be reprogrammed/repaired. We do not provide reprogramming/repair service. We are also not responsible for any kind of labor cost or reprogramming cost. In case of a return, Buyer will only be covered for the item price. Please review all photos and the part number as this is the exact unit you will receive. All orders going to Alaska, Guam, Hawaii, Puerto Rico, and other U.S. Territories will be shipped out with USPS Priority Mail. Powered by SixBit's eCommerce Solution