INJECTOR

The invention relates to a fuel injector having an injector body 1 and a nozzle body 2 with a bore 4a receiving 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 is connected to a high-pressure line 10, 10a for fuel in the injector body 1 and the nozzle body 2, and wherein a sensor 12 fastened to the injector by means of an adhesive bonding is provided for recording a deformation of a wall of the injector. According to the invention, an injector is provided with a sensor 12 for determining a deformation of a wall caused by the fuel guided through the injector, which is improved with regard to its controllability. This is achieved in that the adhesive bonding is a circumferential adhesive bonding 13. In this case, the circumferential adhesive bonding 13 encompasses the entire contact surface between a bottom wall 14 of the sensor 12 and the facing wall surface 15 of the injector and at least a partial surface of a side wall 16a, 16b, 16c, 16d of the sensor 12.