Delphi Fuel Pump Regulating Valve (Inlet Metering Valve / IMV) - Part No: 28331212. Designed for Hyundai CRDi common rail diesel systems (also compatible with JMC and JAC). This direct-fit suction control valve accurately regulates fuel flow into the high-pressure pump, immediately resolving hard starting, rough idling, and engine surging. A highly cost-effective, plug-and-play solution to stabilize rail pressure and clear dashboard warning lights fast.