E320D Pressure Valve 416-7101 4167101 E323D Common Rail Injector Valve 305-5291 3055291

Caterpillar 416-7101 / 305-5291 Common Rail Injector Pressure Valve is a core fuel system component for CAT E320D and E323D excavators. As the pressure control element of the common rail injector, it precisely regulates fuel pressure to ensure injection accuracy and combustion efficiency, serving as a critical safety valve for the diesel engine high-pressure common rail system.