Fuel injector valve with multi-part valve body on the control chamber

A fuel injection valve (1) for internal combustion engines has a pressure chamber (3) with a fuel needle (5) that can move longitudinally therein. The fuel needle (5) cooperates with a needle seat (7) and opens or closes the connection of the pressure chamber (3) with an injection opening (9) through its longitudinal movement. The fuel needle (5) is guided in a control chamber sleeve (15). Furthermore, the fuel injection valve (1) has a control chamber (11) that can be filled with pressurized fuel via an inlet throttle (13) and controls a closing force on the fuel needle (5). Additionally, the fuel injection valve (1) has a valve body (17) for receiving a control piston (19). An outlet throttle (21) is provided in the control piston (19), which is connectable on one side with the control chamber (11) and on another side with a low-pressure chamber (23). The control chamber (11) is separated from the pressure chamber (3) by the control chamber sleeve (15) and by the valve body (17). The valve body (17) has a guide section (25) and a valve piece (27) designed separately from the guide section (25).