BMW E81 E87 LCI E90 E91 F20 F30 N47 RP Injector Fuel Jet Nozzle 7798446

BMW E81 E90 F20 F30 118d 318d N47 Injector Fuel Injector 7798446 is an original injector nozzle from the BMW group, designed for N47 diesel engines in popular 1 and 3 Series models. The component ensures precise fuel delivery, which translates into stable engine operation, proper running smoothness, and correct combustion parameters.

Specifications and technical data

• SKU: 7798446
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7798446
• Substitutable numbers: 7798446, 13537798446
• Category: Fuel Injectors

Intended Use and Compatibility

The presented BMW fuel injector belongs to the Injector Nozzles category and is used in N47 diesel engines installed in BMW E81, E90, F20, and F30 models in the 118d and 318d versions. The OEM design guarantees proper fitment to the fuel system, correct positioning in the cylinder head, and compatibility with the factory engine control unit.

By maintaining its original operating characteristics, the injector allows for the preservation of factory power and torque parameters, as well as supports the correct functioning of exhaust emission control systems.

Construction and Operating Characteristics

The injector in this series has been designed for precise high-pressure fuel injection, which is crucial for modern BMW diesel engines. The applied technology enables:

• accurate fuel metering across the full engine load range,
• stable idle operation and during acceleration,
• optimal fuel atomization in the combustion chamber, promoting efficient mixture combustion,
• maintenance of correct exhaust emission parameters in line with factory specifications.

The original BMW OE design minimizes the risk of leaks, dosing issues, or improper operation under load, which directly impacts the durability of the N47 unit.

Item Condition and Service Application

The offered injector nozzle is a used component, making it an attractive solution for users seeking an economical yet factory-compliant part for the N47 engine. This type of component is suitable for both routine repairs and comprehensive fuel system servicing, for example, in cases where a single injector needs replacement.

Injector replacement is particularly important when symptoms such as uneven engine operation, increased fuel consumption, or excessive smoke appear. In such situations, using an original injector nozzle helps restore the correct operating parameters of the engine.

Benefits of Using an Original BMW Injector Nozzle

• Factory Fitment – the component comes from the BMW OE line, ensuring compatibility with the engine's fuel and control systems.
• Stable N47 Engine Operation – correct fuel injection reduces vibrations, improves throttle response, and supports smooth operation across all cylinders.
• Support for Exhaust Emission Systems – proper fuel dosing helps maintain the efficiency of the particulate filter and other exhaust system components.
• Reasonable Repair Cost – a used injector nozzle allows for reduced service costs compared to a new component, while maintaining original specifications.

Diagnostics and Technical Knowledge

When experiencing issues with the fuel system, it is advisable to consult reliable service information. Detailed information on typical symptoms and the consequences of neglect can be found in the article Diesel Injector Failures – How to Recognize Them and What Their Neglect Entails, which discusses diagnostics and the effects of improper injector operation in diesel engines.

Other BMW Injector Nozzles

If you are looking for other BMW injector nozzles for different models or engine configurations, check out our dedicated category: BMW Injector Nozzles, where you will find a wide selection of original solutions for various engines of this brand.