BMW E81 E87 LCI 116d 118d E90 318d N47 Fuel Pump Injector Injection System Set

The BMW E81 E87 LCI 116d 118d E90 318d N47 Injector System Kit is a complete diesel fuel system component designed for N47 engines in select BMW 1 Series and 3 Series models. This kit comes from the BMW OE line, ensuring a factory fit for the powertrain and predictable engine behavior under load.

Specifications and technical data

• SKU: 7809127-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7809127
• Substitutable numbers: 7809127, 13537809127, 0445214182, 0 445 214 182, 7797874, 0445010506, 0 445 010 506, 0281002738, 0 281 002 738, 7798446, 13537798446
• Category: Fuel Injectors

Purpose and Compatibility

The presented injector system kit for BMW with N47 engine is designed for precise cooperation with diesel engines in BMW E81, E87 LCI 116d, 118d, and E90 318d models. The OEM construction guarantees correct injector operating parameters, appropriate rail pressure, and stable fuel delivery across the entire RPM range.

Thanks to the use of original manufacturer solutions, the kit maintains compatibility with the factory control electronics, which simplifies adaptation after installation and reduces the risk of engine control unit errors. This is particularly important in modern N47 units, where the correct cooperation of fuel system components is crucial for smooth operation and emissions.

Injector System Construction and Function

The injector system in a diesel engine is responsible for precise fuel metering into the combustion chambers under very high pressure. In N47 units, this directly impacts:

• Stable idle operation – reducing vibrations and uneven engine running,
• Proper acceleration dynamics – quick response to accelerator pedal input,
• Maintaining optimal fuel consumption – correct dosing across the entire load range,
• Exhaust emission control – cooperation with the exhaust gas aftertreatment system and environmental standards.

Using a complete OEM injector kit allows for the preservation of factory engine operating characteristics, which is particularly important for daily-driven vehicles and fleet vehicles where predictability and repeatability of parameters are key.

Benefits of Using an Original BMW OE Kit

Choosing an original BMW OE injector system offers a number of practical advantages compared to aftermarket alternatives of unknown origin:

• Factory Fitment – compatibility with the N47 engine design and fuel system in E81, E87 LCI, and E90 models.
• Software Compatibility – reducing the need for additional injector map modifications.
• Stable Operating Parameters – predictable engine behavior under various load and temperature conditions.
• Improved Engine Smoothness – enhancing injection uniformity and reducing typical wear symptoms such as jerking or smoking.

For workshops and service centers specializing in BMW, using a complete OEM kit simplifies diagnostics, reduces installation time, and minimizes the risk of post-repair complaints.

Condition, Installation, and Service Application

The offered injector kit for BMW N47 is a component from the Injector Nozzles category, intended for professional service applications. By maintaining the original manufacturer's specifications, it can be installed in place of the factory system without the need for mechanical modifications.

Installation in a specialized workshop equipped with appropriate diagnostic equipment for BMW engines is recommended. After installation, it is advisable to perform adaptation and testing of the injector system to confirm correct pressures, injection times, and the absence of fuel system leaks.

Injector System Diagnostics and Prevention

For N47 diesel engines, it is crucial to detect early signs of injector wear, such as starting difficulties, power loss, increased smoke, or characteristic knocking sounds. To better understand the symptoms and consequences of neglecting repairs, it is worth reading the article: Diesel Injector Failures – How to Recognize Them and What Are the Consequences of Neglect. This provides practical knowledge for mechanics and users who want to approach fuel system servicing consciously.

If you are looking for other BMW Injector Nozzles compatible with various models of this brand, check out our dedicated category: BMW Injector Nozzles. This will allow you to easily compare available solutions and select the appropriate component for a specific engine and vehicle year.