An electromagnetic sensor having a detection zone in a sensor direction is at least partly enclosed by a molded part in the sensor direction and at right angles thereto. The molded part contacts and adjoins a motor vehicle part such as a bumper, whereby the molded part is between the sensor and the motor vehicle part. At least one functional element, such as a radiation absorber, a lense, a waveguide, or a reflector, may be embedded in the molded part. The sensor may be received in a pocket recess of the molded part, with an opening at the back side of the sensor.