Coupling element of a plug-in coupling for the releasable connection of a first component to a second component, in which a ball stud is receivable in the coupling element, and which comprises the following features: a. the coupling element is constructed in one piece of plastic having an annular basic element forming a receiving opening for the ball stud and that a1. comprises a fastening structure at a radial outer side of the basic element by means of which the coupling element is fastenable in an opening of the first component, and that a2. comprises a socket-like holding structure at a radial inner side of the basic element, in which a ball-shaped end of the ball stud can snap-in and from which the ball-shaped end is detachable without damaging the holding structure, wherein b. the socket-like holding structure comprises: a centrally arranged supporting element at which the ball-shaped end of the ball stud can abut, as well as a plurality of holding webs (44, 46) integrally formed at one side with the annular basic element, wherein the holding webs (44, 46) protrude resiliently radially inwardly and inclined in an insertion direction of the ball stud into the coupling element, so that a free end of each holding web (44, 46) protrudes resiliently in a radial direction into the radial interior of the coupling element, wherein the holding webs (44, 46) comprise at least a first and a second, preferably straight, web section which are arranged angularly with respect to each other and which are connected to each other, wherein the first web section encloses with an axis of symmetry of the coupling element an angle oc from a range of 45° ≤ ∝ ≤ 90° and the first web section and the second web section are arranged in an obtuse angle with respect to each other. a. the coupling element is constructed in one piece of plastic having an annular basic element forming a receiving opening for the ball stud and that a1. comprises a fastening structure at a radial outer side of the basic element by means of which the coupling element is fastenable in an opening of the first component, and that a2. comprises a socket-like holding structure at a radial inner side of the basic element, in which a ball-shaped end of the ball stud can snap-in and from which the ball-shaped end is detachable without damaging the holding structure, wherein a1. comprises a fastening structure at a radial outer side of the basic element by means of which the coupling element is fastenable in an opening of the first component, and that a2. comprises a socket-like holding structure at a radial inner side of the basic element, in which a ball-shaped end of the ball stud can snap-in and from which the ball-shaped end is detachable without damaging the holding structure, wherein b. the socket-like holding structure comprises: a centrally arranged supporting element at which the ball-shaped end of the ball stud can abut, as well as a plurality of holding webs (44, 46) integrally formed at one side with the annular basic element, wherein the holding webs (44, 46) protrude resiliently radially inwardly and inclined in an insertion direction of the ball stud into the coupling element, so that a free end of each holding web (44, 46) protrudes resiliently in a radial direction into the radial interior of the coupling element, wherein the holding webs (44, 46) comprise at least a first and a second, preferably straight, web section which are arranged angularly with respect to each other and which are connected to each other, wherein the first web section encloses with an axis of symmetry of the coupling element an angle oc from a range of 45° ≤ ∝ ≤ 90° and the first web section and the second web section are arranged in an obtuse angle with respect to each other. a centrally arranged supporting element at which the ball-shaped end of the ball stud can abut, as well as a plurality of holding webs (44, 46) integrally formed at one side with the annular basic element, wherein the holding webs (44, 46) protrude resiliently radially inwardly and inclined in an insertion direction of the ball stud into the coupling element, so that a free end of each holding web (44, 46) protrudes resiliently in a radial direction into the radial interior of the coupling element, wherein the holding webs (44, 46) comprise at least a first and a second, preferably straight, web section which are arranged angularly with respect to each other and which are connected to each other, wherein the first web section encloses with an axis of symmetry of the coupling element an angle oc from a range of 45° ≤ ∝ ≤ 90° and the first web section and the second web section are arranged in an obtuse angle with respect to each other.