BMW F10 F20 F30 LCI 120d 320d 520d B47 Fuel Injection System Injectors Pump Set

BMW F10 F20 F30 LCI 120D 320D 520D B47 Fuel Injection System Kit is a complete set of components from the injector nozzles category, designed for B47 diesel engines in popular post-facelift BMW 1, 3, and 5 Series models. This solution is for users who want to restore proper operation of the diesel fuel supply system while maintaining the original characteristics of the engine.

Specifications and technical data

• SKU: 8514148-6
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8514148
• Substitutable numbers: 8514148, 13538514148, 0445110743, 0 445 110 743, 8573386, 8515058, 0445010540, 0 445 010 540, 8514166, 13538514166, 0445214278, 0 445 214 278, 8516196, 13538516196, 0445130044, 0 445 130 044
• Fuel type: Diesel
• Category: Fuel Injectors

Intended Use and Injection System Characteristics

The presented fuel injection system kit has been developed for the B47 engine in the 120d, 320d, and 520d versions after body modernization (LCI). The design, based on precise injector nozzles, ensures appropriate fuel dosing across the entire load range, which translates to stable engine operation, smooth running, and predictable throttle response.

The system is adapted for operation with diesel fuel, meaning the components are resistant to high pressures, temperatures, and the specific properties of diesel fuel used in modern BMW diesel engines.

Benefits of Using the Injection System Kit

Using a complete fuel injection system kit in the B47 engine can, in many cases, solve problems related to unstable engine operation. The most significant advantages include:

• Restoration of proper fuel dosing – even operation of all cylinders and improved idle smoothness.
• Combustion optimization – proper diesel atomization helps maintain factory performance and fuel consumption parameters.
• Stable operation under load – correct injection pressure and dose facilitate predictable vehicle behavior during acceleration and highway driving.
• Better integration with engine electronics – an injection system compliant with factory specifications simplifies diagnostics and reduces the risk of fuel dosing-related errors.

Condition, Origin, and Technical Fitment

The kit comes from a BMW vehicle and is an OEM-class component, meaning it offers factory fitment for the B47 unit in post-facelift F10, F20, and F30 models. The used nature of the components makes it a cost-effective solution while maintaining the original design and geometry of the injection elements.

For correct selection, it is recommended to verify compatibility by OEM part number and interchangeable numbers – all this information is detailed in the technical specifications section. This allows for precise confirmation of compatibility with a specific engine version and vehicle year.

Diesel Injection System Operation and Diagnostics

The fuel injection system in a diesel engine is particularly sensitive to fuel quality and regular servicing. Symptoms such as starting difficulties, uneven cold running, power loss, or smoking may indicate wear of the injection components. In such cases, it is advisable to consider replacing the entire set to restore cohesive operation of the entire system.

If you want to better understand the symptoms of wear and the potential consequences of neglect, the article will be helpful: Diesel Injector Failures – How to Recognize Them and What Neglecting Them Entails. This is a practical supplement to your knowledge when planning an injection system repair.

BMW Injector Nozzles – Selection and Alternatives

When planning a repair, it is worth comparing different solutions – new, aftermarket, and used components. A used fuel injection system kit allows for cost reduction while maintaining the original manufacturer's specifications. If you want to compare available options more broadly, check out the guide: Original, Aftermarket, or Used – Which Car Parts Are Most Cost-Effective?, where you will find a discussion of quality and cost differences.

If you are looking for other items from the BMW injector nozzles category, check out our dedicated offer: BMW injector nozzles. This will allow you to easily compare available solutions for various models and generations of the brand's diesel engines.