An actuator for a cam phaser, wherein the cam phaser includes a hydraulic valve that is adjustable by the actuator, wherein the actuator is receivable at a housing section by at least one form locking connection, wherein the at least one form locking connection includes a first form element pair and a second form element pair, wherein the first form element pair includes a first stop and the second form element pair includes a second stop, and wherein the first stop and the second stop are oriented in opposite directions of rotation of the actuator.
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