Plug connector arrangement with sleeve part

A plug connector arrangement comprising a plug connector and a cable connected thereto with at least one wire pair for transmission of a differential signal, wherein the wires of the wire pair are spaced apart at a first mutual distance (X) in a sheathed cable section, diverge, in an expansion section, in the direction of the plug connector, and in a guide section of the plug connector are spaced apart at a greater second mutual distance (Y), wherein a sleeve part, at least partially surrounding the wire pair in the expansion section, exerts pressure on the wires of the wire pair, at least in sections, in order to reduce the distance therebetween, wherein the sleeve part is radially deformed through the external application of pressure, in particular by being pressed or crimped, in order to further reduce the distance between the wires of the wire pair running through the sleeve part.