Connector and Connector Assembly and Method for Producing a Connector

A connector for a fluid line comprising a connector housing which has a fluid duct extending away from a first opening, wherein a locking device having a locking housing and a locking element is provided in the region of the first opening, wherein the locking housing encloses the connector housing with respect to the fluid duct in the peripheral direction such that an annular gap, which surrounds the first opening concentrically, is formed between the connector housing and the locking housing in order to receive a substantially cylindrical connecting branch, and wherein the locking element juts with at least one holding portion in an elastically resilient manner into the annular gap, wherein the locking housing is a component which is separate from the connector housing and which, at least in the longitudinal direction of the fluid duct, is held on the connector housing in the region of the first opening.