Imaging system for a motor vehicle and method of mounting an imaging system

An imaging system (11) for a motor vehicle comprises a camera housing part (96) and at least one camera module (12) to be mounted to said camera housing part (96). The camera module (12) comprises first rotation locking means (94), said camera housing part (96) comprises second rotation locking means (99) adapted to cooperate with said first rotation locking means (94), wherein said first and second rotation locking means (94) cooperate to lock the camera module (12) against rotation relative to the camera housing part (96).