BMW E60 E61 LCI E90 330d 530d M57N2 Fuel Injector Diesel 7796042

BMW E60 E61 LCI E90 330d 530d M57N2 Diesel Fuel Injector 7796042 is an original injector nozzle designed for BMW M57N2 diesel engines, used in popular 3 and 5 Series models. This component comes from a dismantled vehicle, allowing for an economical yet technically sound repair of the fuel system in 330d and 530d engines.

Specifications and technical data

• SKU: 7796042-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 77960420
• Substitutable numbers: 13537796042, 7796042, AS
• Fuel type: Diesel
• Category: Fuel Injectors

Application in BMW M57N2 Engines

The presented Diesel Fuel Injector is intended for M57N2 units installed in BMW E60, E61 LCI, and E90 models in the 330d and 530d versions. This solution is dedicated to common rail systems where precise diesel fuel metering is crucial for engine smoothness, performance, and fuel consumption.

By maintaining its factory operating characteristics, the injector enables:

• stable fuel delivery across the full engine load range,
• maintaining the proper dynamics of the M57N2 unit in 330d and 530d models,
• reducing smoke emissions and improving combustion quality in the diesel engine.

Technical Characteristics and Injector Role

The injector from the Injector Nozzles category is responsible for precisely atomizing diesel fuel in the combustion chamber. In BMW common rail systems, maintaining the correct pressure and fuel spray pattern is essential, which translates to:

• even operation of all cylinders,
• efficient cold starts and starts with a warm engine,
• reduction of vibrations and noise characteristic of diesel units.

Selecting the correct injector nozzle for a specific M57N2 engine is important not only for performance but also for the durability of other injection system components, such as the high-pressure pump or the common rail manifold.

Benefits of Using an Original BMW Injector Nozzle

Using an original BMW injector from this series allows you to maintain the parameters specified by the vehicle manufacturer. In practice, this means:

• better compatibility with the engine control unit software in E60, E61 LCI, and E90 models,
• correct operation under load conditions, including dynamic acceleration and highway driving,
• reduced risk of diagnostic errors related to incorrect fuel metering.

For M57N2 units, which often have high mileage, the proper condition of the injector nozzles directly impacts fuel consumption, exhaust emissions, and overall engine smoothness.

Condition, Origin, and Practical Application

The offered component comes from a dismantled BMW vehicle, making it an attractive alternative to new parts while maintaining factory specifications. Replacing a worn injector with a functional unit from the same series is a common service solution in specialized workshops dealing with M57N2 engines.

Before installation, a standard service procedure is recommended, including:

• verification of operating parameters on a test bench,
• checking the fuel system for leaks,
• injector adaptation in the engine control unit, if required by the specific unit variant.

Diagnostics and Preventive Maintenance of the Injection System

If your BMW 3 or 5 Series diesel engine exhibits symptoms such as rough idling, loss of power, or increased smoke, it's worth consulting the guide: Diesel Injector Faults – How to Recognize Them and the Dangers of Neglecting Them. The article details the symptoms of worn injector nozzles, the potential consequences of neglecting them, and basic diagnostic methods.

Other BMW Injector Nozzles

If you are looking for other BMW injector nozzles for different engine versions or 3 and 5 Series models, check out our dedicated category: BMW Injector Nozzles. This will allow you to easily compare available variants and select the component suitable for your specific engine number and vehicle generation.