Fuel Injector

The invention relates to a fuel injector (), comprising: a pre-chamber () within the injector, a high-pressure injector part () for discharging combustible gas, which high-pressure injector part has a nozzle unit () and a reciprocating nozzle valve element (), a nozzle-side end section of which is accommodated in a high-pressure chamber () of the high-pressure injector part (), a pre-chamber assembly (), within the framework of which the high-pressure chamber () of the high-pressure injector part () is separated over a nozzle-side end section, the high-pressure chamber being surrounded by the pre-chamber ().