This auction for sale a brand new never install 2003 to 2007 Ford Explorer sport Trac. Am/Fm 6 cd radio part # is 4L2T-18c815-BF, and only works with vehicle has Subwoofer equipped. Buyer  responsible for the fitment Please check the connectors to see as same your radio before you purchase. This unit was tested and all functions in working order, come with 30 days warranty exchange. Fast and free shipping.