Delphi fuel modules are built with OE-tested and validated components designed to provide uninterrupted flow of fuel to the engine at system pressure. Typically the fuel module integrates a pump, regulator, fuel level sensor, fuel filter, and reservoir as one unit.
I am a stickler for OEM fuel system products. Occasionally availability or budget makes OEM impossible. In those cases I use Delphi without reservation. They are OE quality or OE reboxed units. Never an issue with a Delphi pump.