For Rolls Royce Phantom

Rolls-Royce part number 13537500221 is a fuel pressure sensor. It is used to measure the pressure of the fuel in the fuel rail, which is a manifold that distributes fuel to the engine's injectors. The fuel pressure sensor sends this information to the engine's control unit (ECU), which uses it to adjust the fuel injection and air-fuel ratio. This ensures that the engine runs efficiently and produces the desired performance and emissions.