A heatable injector (1) for fuel injection in an internal combustion engine, the injector (1) having an injector housing (2), a fuel space (3) which is situated inside the injector housing (2), an adjustable injector needle (4) which is arranged in the injector housing (2) for opening and closing a fuel discharge opening (5) of the injector housing (2), and a heating device (6) which is arranged inside the injector housing (2) with a heating element (7) for heating the fuel (8) which is situated in the fuel space (3). The heating element (7) is configured as a coating of a boundary face of the injector (1) with respect to its fuel space (3), the coating being composed of a carbon nanoparticle material. The injector ensures a satisfied heat characteristic and a beat heat transfer to the fuel by employing a simple structure design.