A filler neck housing or charging housing for insertion into a body opening in a motor vehicle, comprising a housing section with a first sealing section and a second sealing section, the first sealing section being provided on an outer edge, which can be inserted into the body opening, of the housing section and being designed to bear in a sealing manner on the body opening, and the second sealing section being provided on a passage opening in the housing section, into which a tank filler pipe or a plug-in charging connector can be inserted, the second sealing section being designed to bear in a sealing manner against the tank filler pipe or the plug-in charging connector.

A tank filler neck for a motor vehicle, and a motor vehicle having such a tank filler neck. The tank filler neck includes a plastic tube, a filler head composed of metal to enclose the plastic tube at an end thereof, and a first seal composed of an elastomer arranged on the circumference between the plastic tube and the filler head; a first seal composed of an elastomer, and which is arranged circumferentially between the first tube and the filler head; and a first supporting ring arranged opposite to the first seal in relation to the first tube, wherein the first supporting ring has a wall thickness that is greater than a wall thickness of the filler head.