A tank filler tube includes a fill tube line which features, in the tank assembled state, an inlet end further from the tank, which is designed for temporary insertion of the fill nozzle into a closer-to-the-tank insertion region of the fill tube line, and with a closer-to-the-tank transit line end in the tank assembled state, which is designed for transit of liquid in a direction of the liquid transit line leading away from the inlet end, wherein the fill tube line is of multi-part design.At least one part of the ventilation line is for venting the gas displaced during a filling of a tank into the atmosphere. The fill tube line section featuring the transit line end extends into the insertion region further from the tank and is designed to accommodate at least one outlet end of a fill nozzle during a filling of a tank.