This fuel injector delivers a metered charge of high-pressure fuel into the combustion chamber at the precise moment required for ignition. It is a key component of the fuel system, receiving pressurized fuel from the injection pump and atomizing it into the cylinder. A failing injector typically causes misfiring, rough idle, reduced power, or excessive smoke from the exhaust. This component is manufactured by Bosch to match the original injector's hydraulic flow rate and spray pattern, which the engine management system relies on for correct timing and cylinder balancing. On installation, ensure the sealing washer is replaced and the injector is tightened to the specified torque to prevent combustion gas leakage.