BMW 3 5 7 E90 E91 E92 LCI F10 F01 N57 Pressure Hose Assy Pipe Fuel Injector

The BMW E90 E91 LCI N57 Fuel Injector Line is an original component of the diesel engine fuel system, designed for facelifted BMW 3 Series models with the N57 engine. This precisely manufactured line ensures stable fuel delivery to the injector, which translates to smooth engine operation and correct injection characteristics.

Specifications and technical data

• SKU: 7805424
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7805424
• Substitutable numbers: 13537805424, 7805424
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and Role in the Injection System

The fuel injector line in a diesel engine is responsible for the precise delivery of high-pressure fuel from the common rail to a specific injector. In the N57 engine, this is crucial for:

• Stable idle operation – reducing vibrations and uneven engine running,
• Correct fuel metering – maintaining factory combustion parameters,
• Maintaining proper diesel engine refinement – less noise and better throttle response.

Using a line dedicated to a specific BMW N57 engine minimizes the risk of leaks and pressure issues within the common rail system.

Construction and Fitment for BMW E90/E91 LCI

The BMW E90 E91 LCI N57 Fuel Injector Line is a component designed for the specific layout of the ancillary equipment in the engine bay of the facelifted 3 Series. Its appropriate profiling and factory-fitted connection ends ensure:

• Secure sealing of connections to the common rail and injector,
• Proper routing of the line while maintaining required clearances from hot components,
• Compatibility with the high-pressure system used in N57 engines.

This allows for an organized installation without the need for modifications or adjustments of universal aftermarket parts.

Benefits of Using an Original Injector Line

In diesel common rail systems, the quality of high-pressure lines directly impacts the durability of injectors and the pump. Using an original BMW fuel injector line helps to:

• Reduce the risk of micro-leaks, which can cause pressure drops and ECU errors,
• Maintain correct injection parameters across the entire load range,
• Reduce mechanical stress resulting from vibrations and pressure pulsations,
• Preserve the factory operating characteristics of the diesel engine's fuel system.

This is particularly important in modern diesel engines with very tight tolerances, where any deviations can quickly lead to a drop in performance or the appearance of diagnostic errors.

Condition, Verification, and Application in Diesel Engines

The offered component comes from a Diesel engine fuel system, which guarantees its structural adaptation to the high operating pressures typical of common rail systems. As a used part, it is a good choice for users who want to:

• Optimize repair costs while retaining an OEM component,
• Restore the functionality of the injection system after a failure or service intervention,
• Maintain the original configuration of the fuel system in BMW E90/E91 LCI models with the N57 engine.

The line is suitable for both replacing a single injector and for broader service work within the common rail system.

BMW Injector Nozzles – Selection and System Expansion

If you are looking for other components in the BMW injector nozzles category for your car, check out the dedicated offer at BMW injector nozzles to select complete fuel system components for your specific engine configuration.

Diagnostics and Prevention of the Injection System

Replacing the injector line is often part of a broader fuel system diagnostic process. It is important to be aware of the typical symptoms of injector wear to react in a timely manner and prevent more serious engine damage. You can find more practical information in the article Diesel Injector Failures – How to Recognize Them and What Neglecting Them Entails, which discusses symptoms, consequences, and diagnostic methods for injectors in diesel engines.

A thoughtful selection of a fuel injector line for the BMW E90/E91 LCI with the N57 engine helps maintain the common rail system's efficiency, improve engine refinement, and reduce the risk of costly future failures.