A fuel injector having a non-magnetic shell within the solenoid coil assembly

A fuel injector (100) for use with an internal combustion engine. The fuel injector comprises a valve group sub-assembly (200) and a coil group sub-assembly (300). The valve group sub-assembly (200) includes a tube assembly having a longitudinal axis that extends between a first end and a second end; a seat that is secured at the second end of the tube assembly and that defines an opening; an armature assembly (260) that is disposed within the tube assembly; a spring (270) that biases the armature assembly (260) toward the seat; an adjusting tube (280) that is disposed in the tube assembly and that engages the spring (270) for adjusting a biasing force of the spring (270); a filter (284) that is located at least within the tube assembly. The coil group sub-assembly includes a solenoid coil (310) that is operable to displace the armature assembly (260) with respect to the seat.