Plug-in connector

The plug-in connection for the releasable connection of pipe (10) to a counter part (11) has means for fixing of the pipe end section in the counter part. The counter part is sub-divided into a continuation section (13) and a pipe housing section (12). The pipe housing section has a greater flexibility than the continuation section and is inserted in the continuation section of the counter part. The insertable pipe in the outer region of the connecting point has at least one locking protrusion (16) to create a positive lock with the pipe housing section of the counter part.