BMW F20 F30 F31 LCI Diesel 125d 325d B47 Injector Fuel Pump Injection System Set

The BMW F20 F30 F31 LCI Diesel 125D 325D B47 Fuel Injection System Kit is a complete, used set of components from the injector nozzles category, designed for BMW diesel engines from the B47 family. This solution allows for professional repair or restoration of the injection system's functionality in modern diesel units, while maintaining factory operating parameters.

Specifications and technical data

• SKU: 8514151-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8514151
• Substitutable numbers: 8514151, 13538514151, 8514155, 13538514155, 0281006394, 0 281 006 394, 8514138, 0445010770, 0 445 010 770
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and System Characteristics

The presented fuel injection system for BMW with B47 engine has been designed for precise fuel delivery in the 125D and 325D diesel units after facelift (LCI). The kit includes components from the injector nozzles group, responsible for proper diesel fuel atomization in the combustion chamber, which translates to stable engine operation, smooth running, and exhaust emission control.

The system is adapted for Diesel fuel, ensuring compatibility with the factory configuration of BMW powertrains based on common rail technology. By maintaining the original injection architecture, it is possible to preserve the correct operating pressure and fuel dose repeatability across the full load range.

Benefits of Using an Original Injection System

Using a complete, original injection kit in a B47 engine brings a number of tangible operational benefits:

• Consistency with factory engine control unit calibration – maintaining injection parameters in line with ECU maps.
• Stable engine operation – reduction of vibrations, uneven idling, and power drops under load.
• Optimal mixture combustion – proper fuel atomization promotes efficient utilization of diesel's chemical energy.
• Exhaust emission control – correct fuel dosing supports the operation of exhaust gas treatment systems in modern diesels.

For users seeking service solutions, such a kit represents a technically justified alternative to replacing individual random components, allowing for a comprehensive approach to fuel system regeneration.

Condition, Origin, and BMW Fitment

The offered BMW kit is a used part from disassembly, meaning it retains the original manufacturer's specifications while offering cost attractiveness compared to new components. This type of solution is particularly interesting for users who want to restore the injection system's functionality while staying within a reasonable service budget.

Thanks to the use of original manufacturer markings, including the dedicated OEM part number and its associated interchangeable numbers, precise fitment of the kit to a specific vehicle configuration is possible. This facilitates compatibility verification with specific B47 engine versions installed in facelifted BMW F20, F30, and F31 series.

Technical and Operational Aspects of the Injection System

The injection system in a modern BMW diesel is responsible not only for fuel delivery but also for shaping the torque curve, noise levels, and engine wear. Efficient injector nozzles contribute to:

• maintaining predictable vehicle behavior during dynamic acceleration and highway driving,
• reducing smoke and undesirable exhaust odors,
• stable cold starts, even at lower ambient temperatures,
• even cylinder loading, which promotes long-term, trouble-free engine operation.

In cases of symptoms such as jerking, power loss, increased fuel consumption, or uneven idling, a comprehensive replacement or repair of the injection system is one of the key diagnostic and service steps.

Expert Support and Related Products

If you want to better understand the symptoms of wear in diesel injection components, it is worth reading the article describing typical signs and consequences of neglect: Diesel Injector Failures – How to Recognize Them and What Neglecting Them Entails. This provides practical knowledge for planning fuel system repairs.

For users looking for BMW injector nozzles for other models of this brand, a dedicated category has been prepared where you can find a wide selection of compatible solutions: BMW injector nozzles. This allows for easy comparison of available kits and selection of components for a specific engine version.

Summary

The BMW F20 F30 F31 LCI Diesel 125D 325D B47 Fuel Injection System Kit is a technically matched solution for owners of modern BMW diesels who want to restore proper fuel supply system operation. Original components from the injector nozzles category, adapted for diesel fuel, support stable engine operation, correct power characteristics, and exhaust emission control, forming a solid basis for professional injection system repair.