BMW E81 E87 LCI E92 120d 320d N47 Fuel Injector Rail Sensor 7797882

The BMW E87 LCI E92 120d 320d N47 Fuel Rail Valve is an original high-pressure fuel system component designed for BMW diesel engines from the N47 family, used in 1 and 3 Series models. This product is sourced from a dismantled vehicle, enabling an economical yet technically sound repair of the fuel injection system in BMW cars.

Specifications and technical data

• SKU: 7797882
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7797882
• Substitutable numbers: 7797882, 13537797882, 0445214131, 0 445 214 131, 0281002870, 0 281 002 870
• Category: Fuel Injectors

Technical Characteristics of the BMW N47 Fuel Rail

The fuel rail with valve for N47 units is responsible for stabilizing fuel pressure throughout the common rail system. A correctly selected fuel rail ensures uniform supply to all injectors, which translates to efficient diesel engine operation, proper running smoothness, and reduced vibrations and noise. The integrated valve serves a control and safety function, maintaining pressure within the required operating range.

The original BMW manufacturing ensures precise fitment with the manifold and high-pressure lines, minimizing the risk of leaks and air bleeding issues. The component is structurally designed to work with the factory engine control unit, thus maintaining operational parameter compatibility with the ECU maps.

Application in BMW E87 LCI and E92 120d / 320d Models

The presented fuel rail with valve has been designed for N47 engines used in popular BMW models such as the 1 Series E87 LCI and the 3 Series E92 120d and 320d. Using the correct component from the same design family allows for maintaining the factory operating parameters of the powertrain, including:

• correct common rail pressure across the full load range,
• stable fuel delivery at low and high RPMs,
• consistency with factory control strategies for cold and warm starts.

By maintaining compatibility with the N47 engine's fuel injection system, replacing a damaged fuel rail with an original component from the same family helps reduce the risk of diagnostic errors, power loss, or starting problems.

Benefits of Using an Original BMW Fuel Rail

Choosing an original fuel rail with valve for BMW N47 is a beneficial solution both technically and operationally. Key advantages include:

• Factory geometry and connection ports – facilitate installation and ensure correct routing of high-pressure lines.
• Compatibility with factory equipment – works with original injectors, high-pressure pump, and sensors.
• Reduced risk of leaks – proper fitment of sealing surfaces and threads.
• Stable fuel injection system operation – maintains predictable engine behavior under load.

For the user, this means more predictable operation, a lower risk of secondary failures, and easier diagnostics if further service work is required.

Condition, Origin, and Installation Aspects

The fuel rail with valve is a used component, sourced from a dismantled BMW vehicle. This type of part is particularly attractive to users seeking a solution with a favorable price-to-functionality ratio, while maintaining original manufacturer specifications. A used OEM component allows for restoring the fuel injection system's functionality without the need to invest in a new part.

Before installation, it is recommended to perform a standard service procedure, including checking the cleanliness of fuel lines, verifying the condition of injectors, and checking system operating parameters using computer diagnostics. Correct installation and adaptation in the engine control unit help avoid fuel pressure issues and errors stored in the ECU memory.

Fuel Injection System Diagnostics and Technical Knowledge

When replacing the fuel rail, it is advisable to pay attention to the overall condition of the fuel supply system, including the state of the injectors. Typical symptoms of diesel fuel injection system problems – such as rough idling, smoking, or power loss – can result from damage to either the fuel rail or the injectors themselves. Practical tips for recognizing faults can be found in the article Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails, which discusses symptoms, consequences, and basic diagnostics.

Related BMW Injector Nozzles

If you are also planning to replace other components during your common rail system service, check out the BMW injector nozzles available in our range. The full offer in this category can be found at the link: BMW injector nozzles, where you can select compatible components for your engine, maintaining brand and category consistency.