INJECTOR

The invention relates to an injector comprising an injector body (1) and a nozzle body (2) with a bore (4a) accommodating a nozzle needle (5), wherein the nozzle needle (5) is translationally movable in the bore (4a), and having a nozzle needle tip (7) cooperating with a nozzle body seat (8), wherein at least one nozzle opening (9) is assigned to the nozzle body seat (8), which is controlled by the nozzle needle (5) and connected to a high-pressure line (10, 10a) for a medium in the injector body (1) and the nozzle body (2), and wherein a piezoceramic sensor (15) is provided for recording a pressure profile of the medium. According to the invention, an injector with a sensor (15) for determining a pressure profile of a medium guided through the injector is specified, the function of which is improved. This is achieved in that the sensor (15) is inserted in a recess (12) aligned with the high-pressure line (10, 10a), and in that the recess (12) is closed on the side facing away from the high-pressure line (10, 10a) by a cover (18) welded to the injector body (1) or nozzle body (2).