The Hitachi High Pressure Fuel Pump Kit - 135931 is a comprehensive set of products designed for use in a car's fuel system. It includes four essential components that work together to ensure efficient and reliable fuel delivery to the engine. These components are carefully selected to provide high quality and long-lasting performance, making them suitable for use in a wide range of vehicles.

The kit contains a high pressure fuel pump, which is responsible for delivering fuel at the correct pressure to the engine. This pump is designed to withstand high levels of pressure and is essential for the proper functioning of the fuel system.

In addition to the fuel pump, the kit also includes a fuel filter. This component is responsible for removing any impurities or contaminants from the fuel before it reaches the engine. This helps to prevent damage to the engine and ensures smooth operation.

The third component included in the kit is a fuel pressure regulator. This device is responsible for maintaining a consistent fuel pressure within the system, which is crucial for optimal engine performance. It helps to regulate the flow of fuel and ensures that the engine receives the right amount of fuel at all times.

Finally, the kit also includes a fuel pressure sensor. This sensor measures the pressure of the fuel within the system and sends this information to the engine control unit. This allows the engine to adjust its fuel delivery accordingly, ensuring efficient and smooth operation.

Overall, the Hitachi High Pressure Fuel Pump Kit - 135931 is a comprehensive and essential set of products for any car's fuel system. It provides all the necessary components for efficient fuel delivery and helps to ensure the proper functioning of the engine.