BMW F20 F21 F30 F31 LCI 118d 318d B47 Set Injector Fuel Pump Injection System

The BMW F20 F21 F30 LCI 118d 318d B47 Injector Set is a complete injection system for BMW diesel engines from the B47 family, used in popular facelifted 1 Series and 3 Series models. The set is from a dismantled vehicle, allowing for an economical yet technically sound repair of the diesel fuel system.

Specifications and technical data

• SKU: 8514146-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8514146
• Substitutable numbers: 13538514146, 8514146, 8511626, 13518472282, 8472282, 13518597647, 8597647, 13518511627, 8511627, 13538514154, 8514154, 13538514092, 8514092, 13538514094, 8514094
• Fuel type: Diesel
• Category: Fuel Injectors

Application and Compatibility

The injector set for BMW F20, F21, and F30 LCI is designed for 118d and 318d units with the B47 engine, a modern direct-injection diesel. This solution is dedicated to users who want to restore the engine's proper operating parameters after a failure or wear of the injection system components.

The injection system in the B47 engine is responsible for precise high-pressure fuel delivery, which is crucial for:

• stable idling and reduced engine vibration,
• proper acceleration dynamics across the entire RPM range,
• maintaining low fuel consumption typical of modern diesel engines,
• reducing smoke and exhaust emissions to factory-specified levels.

Technical Characteristics of the Injection System

The presented set belongs to the Injector Nozzles category and is designed for Diesel fuel. The injectors in the B47 engine work with a common rail system, where fuel is supplied under very high pressure, and the engine control unit precisely controls the timing and duration of nozzle opening.

A system configured this way ensures:

• multi-phase fuel injection (pilot, main, and possibly post-injection), which improves engine running smoothness,
• precise atomization of diesel fuel in the combustion chamber, promoting complete mixture combustion,
• appropriate response to load at low and medium RPMs, important for city and suburban driving.

Using an original injection system from the same engine family allows for maintaining the engine's factory operating parameters without the need for installation modifications.

Benefits of Installing a Used Injector Set

Choosing a used injector set for BMW 118d and 318d B47 is a solution for those who want to reduce repair costs while maintaining compliance with factory specifications. Compared to regenerating individual components or purchasing new parts, a complete set from a dismantled vehicle can be advantageous in terms of price and installation.

The main advantages of this solution include:

• component consistency – the parts come from a single system, which facilitates matching and reduces the risk of calibration issues,
• maintaining the original operating characteristics of the B47 engine, without experimenting with aftermarket parts of uncertain parameters,
• possibility of quick replacement of the entire injector set, which reduces vehicle downtime in the workshop.

Selection by OEM Numbers and Interchangeable Numbers

The presented product has an assigned OEM part number and interchangeable numbers, which allow for precise verification of compatibility with a specific engine version and vehicle year. Before purchasing, it is advisable to compare the markings with the data of the dismantled components or service documentation to ensure that the injection system will be fully compatible with your BMW model.

If you want to deepen your knowledge on safely selecting parts by manufacturer's designations, the guide on verifying components by OEM numbers may be helpful: proven ways to select BMW parts by OEM numbers.

Diagnostics and Prevention of Diesel Injection System Issues

Symptoms of wear or damage to injectors in a diesel engine include uneven cold running, loss of power, increased smoke, or a significant increase in fuel consumption. In such situations, installing a functional injector set is crucial for restoring proper engine operation and protecting other components, such as the turbocharger or particulate filter.

More information on typical symptoms and the consequences of neglecting the injection system can be found in the article: Diesel injector failures – how to recognize them and what are the consequences of neglecting them.

Other BMW Injector Nozzles

If you are looking for other BMW injector nozzles for different models or engine versions, check out the full offer in the BMW injector nozzles category, where you will find a wide selection of injection systems tailored to various generations of the brand's diesel engines.