A shielded electrical header assembly is provided. The header is configured to be coupled to a first connector connected to a shielded electrical cable and second connector. The header is also configured to be attached to an electrically conductive panel, such as an aluminum battery pack in a hybrid or electric vehicle. The header includes a conductive shield contact that connects the outer conductor of the shielded cable to the panel and a conductive outer connector body that is also connected to the panel and surrounds the terminals and the shield contact of the header, thus providing electromagnetic shielding to the terminals of the header and the connectors. The shield contact is formed of a sheet metal to provide a lower resistance connection between the outer conductor and the panel. A method of manufacturing such a header is also provided.