BMW E81 E87 LCI E90 E91 120d 320d 520d Diesel N47 Injector 7797877

BMW E81 E87 LCI E90 120d 320d 520d Diesel N47 Injector Injector 7797877 is an original injector nozzle designed for BMW diesel engines from the N47 family, used in popular models of the 1, 3, and 5 Series, among others. The component ensures precise fuel delivery, stable engine operation, and correct combustion parameters in modern common rail systems.

Specifications and technical data

• SKU: 7797877-6
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7797877
• Substitutable numbers: 13518577643, 8577643, 7797874, 13537797877, 7797877, 13537809128, 7809128, 13537800601 13534740787 13517812051, 13517797876, 7800601 4740787 7812051 7797876
• Fuel type: Diesel
• Category: Fuel Injectors

Application in BMW N47 Engines

The presented injector from the injector nozzles category has been designed to work with BMW N47 diesel engines used in the 120d, 320d, and 520d models. The injector's design is adapted to the high operating pressures of the common rail system, which translates to:

• stable fuel delivery across the full engine load range,
• correct spray pattern formation in the combustion chamber,
• maintaining engine smoothness at low and high RPMs.

Thanks to its proper adaptation to the N47 engine specifications, the injector helps maintain factory power and torque parameters and reduces exhaust smoke.

Technical Characteristics of the Diesel Injector

The injector operates in a Diesel common rail fuel system, where the precision of valve opening and closing, as well as the correct nozzle shape, are crucial. Appropriately selected operating characteristics allow for:

• precise diesel fuel atomization, which improves the combustion process,
• reduction of combustion noise typical for diesel engines,
• maintaining optimal fuel consumption while preserving driving dynamics.

Original manufacturing in accordance with BMW standards promotes system sealing, correct cold start operation, and stable parameters over a long service life.

Benefits of Using an Original BMW Injector Nozzle

Choosing the right injector directly impacts the lifespan of the N47 engine and the comfort of using the vehicle. Using an original BMW injector nozzle allows for:

• reducing the risk of uneven engine operation and misfires at idle,
• decreasing mechanical loads resulting from incorrect combustion,
• maintaining compatibility with the factory engine control unit map, without the need for additional software modifications.

This solution is particularly recommended for professional fuel system repairs where parameter repeatability and compliance with BMW service documentation are important.

Product Condition and Installation Recommendations

The injector is in the category of used BMW injector nozzles, making it an attractive option for cost-conscious repairs while maintaining original manufacturer specifications. Before installation, it is recommended to verify operating parameters on a test bench and use new seals in accordance with the service procedure.

To minimize the risk of recurring faults, it is advisable to simultaneously check the condition of other fuel system components, such as the high-pressure pump, fuel lines, and fuel filter. Properly performed installation and adaptation of the injector in the engine control unit contribute to stable engine operation and reduced idle vibrations.

Diagnostics and Technical Knowledge

For problems with diesel engine operation – such as hard starting, loss of power, or increased smoke – it is worth consulting educational material describing typical symptoms and methods for checking fuel system components. Detailed information can be found in the article diesel injector faults – how to recognize them and what are the consequences of neglecting them, which discusses symptoms, effects, and basic injector diagnostics.

Other BMW Injector Nozzles

If you are looking for other BMW injector nozzles compatible with different engine versions or models of this brand, check out our dedicated category BMW injector nozzles, where you will find a wide selection of fuel system components for various generations of BMW vehicles.