A wall bushing plug connector which is to be led through and latched in a wall cutout in a housing wall, having an insulating material housing and having two sprung fastening latching arms which are arranged so as to spring outward on mutually opposite sides of the insulting material housing in opposite directions and have at least one latching edge for latching to the housing wall, and the wall bushing plug connector also having mutually opposite clamping contact sections. The sprung fastening latching arms are integrally formed on a support section opposite their free end so as to leave a clearance, with the clearance being intended to accommodate a retaining section of a mating plug connection which can be plugged onto the plug connector for connection to connection contacts.