Fuel injection system

A fuel injection system for a direct injection of a fuel into at least one combustion chamber of an internal combustion engine, comprising:

• a spray section;
• at least one fuel injector for each one of the at least one combustion chamber and including a fuel inlet orifice, the at least one fuel injector being insertable at the spray section into an allocated mounting hole provided on a cylinder head of the internal combustion engine;
• a mounting device assigned to each one of the at least one fuel injector;
• a fuel distributor line being attachable to the cylinder head by the mounting device and including for each one of the at least one fuel injector a fuel outlet orifice that is connectable to the fuel inlet orifice of the at least one fuel injector;
• and
• a hold-down device allocated to each one of the at least one fuel injector and connected to a respective mounting device, the hold-down device holding down the at least one fuel injector in a respective mounting hole of the cylinder head, wherein each mounting device includes:
• a first tightening element for mounting the fuel distributor line on the cylinder head, and
• a second tightening element for applying a hold-down force to a respective one of the at least one fuel injector.