A device for closing a motor vehicle front end air intake is disclosed. The device has a support frame in which at least one set of pivoting slats is installed. At least one control element that controls the positioning of the slats includes an actuator having fixing holes, a housing that receives the actuator, and a cap that comes to cover the housing. The cooperation between the cap and the housing being effected by clipping. The housing includes positioning elements to be inserted into the fixing holes, and the cap includes at least one specific shape that keeps the actuator fixed relative to the positioning elements when clipping the cap onto the housing.