Ultra High-Pressure Pump is similar to a fuel pump in design, but the latter is more sophisticated. Its function is to pressurize fuel before it is sent to the fuel rail after entering from the fuel tank. The GDI system contains a fuel pressure sensor. Apart from this, the Ultra High-Pressure Pump enables a very broad range of applications. It generates the flow required for the creation of pressure, which is dependent on the system's fluid flow resistance.