BMW F20 F21 F30 N47N Fuel Injection System Set 116d 118d 318d Diesel

BMW F20 F30 116d 118d 318d N47N Injector Set 8577649 is a complete, used set of components from the injector nozzles category, designed for BMW diesel engines from the N47N family. The product provides a solid foundation for professional repair or regeneration of the diesel fuel system in popular models of the 1 Series F20 and 3 Series F30.

Specifications and technical data

• SKU: 8577649
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8577649
• Substitutable numbers: 13518577649, 8577649, 7823452, 13517823453, 7823453, 13518576514, 8576514, 13518509012, 8509012, 0445010519, 13537809127, 7809127, 13537798446, 7798446, 13537798447, 7798447, 13537812881, 7812881, 13538507680, 8507680
• Fuel type: Diesel
• Category: Fuel Injectors

Intended Use and Application in BMW N47N Engines

The injector set is designed to work with Diesel N47N power units used in BMW 116d, 118d, and 318d models of the F20/F30 generation. The design of the injection system in these engines requires precisely selected components, which is why using original elements from the same family ensures:

• correct fuel dosing across the full engine load range,
• stable idle operation and during acceleration,
• maintenance of factory fuel consumption parameters and the smooth operation of the diesel unit.

Technical Characteristics of the Injector Set

The injection system in BMW N47N engines operates based on high-pressure diesel fuel supply, making it crucial to maintain proper sealing and dosing precision. The presented set from the injector nozzles category has been selected for:

• compatibility with the factory ECU control used in the 116d, 118d, and 318d versions,
• correct fuel atomization characteristics in the combustion chamber of the diesel engine,
• maintaining the appropriate common rail pressure under typical operating conditions.

A properly selected injector set directly impacts vehicle dynamics, fuel consumption, and emission levels, which is particularly important in modern diesel units.

Benefits of Using Genuine BMW Injector Nozzles

Choosing genuine BMW components for the injection system translates into a range of practical service and operational benefits:

• consistency with factory engine calibration – no need for ECU software modifications,
• better repeatability of operating parameters compared to aftermarket parts of unknown origin,
• easier diagnostics for further fuel system inspections and tests.

For workshops specializing in BMW service, this means faster identification of potential faults and the ability to use standard diagnostic procedures provided by the manufacturer.

Condition, Verification, and Installation Aspects

The offered injector set is a used component, which in workshop practice often represents a favorable compromise between repair cost and maintaining original manufacturer specifications. Before installation, it is recommended to:

• check for leaks and operating parameters on a test bench,
• verify the correctness of injector coding in the engine control unit,
• inspect the cleanliness of the fuel system (filter, lines, tank) to avoid secondary contamination.

A properly prepared and installed injector set allows for restoring stable operation of the diesel unit, reducing smoke, and improving throttle response.

Technical Support and Additional Materials

If you want to better understand the symptoms of wear in diesel injection system components, the following guide will be useful: Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails. The article discusses typical symptoms, consequences of ignoring the problem, and basic diagnostic methods, making it easier to decide on replacement or repair.

For system expansion or further upgrades, consider other BMW injector nozzles available in our offer – check the current assortment using the link: BMW injector nozzles. This will help you easily select components tailored to a specific engine version and vehicle generation.