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

The BMW E90 E91 E92 LCI F10 F01 N57 Injector Line is a fuel supply system component designed for BMW diesel engines from the N57 family, used in models such as the E90/E91/E92 LCI, F10, and F01 series. It is responsible for precisely delivering high-pressure fuel to the injector, which directly impacts the engine's running smoothness and combustion stability.

Specifications and technical data

• SKU: 7805425
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7805425
• Substitutable numbers: 13537805425, 7805425, KZ
• Category: Fuel Injectors

Technical Characteristics of the BMW N57 Injector Line

The offered injector line for the N57 engine belongs to the Injector Nozzles category, which are components responsible for proper fuel supply and atomization in BMW diesel engines. The line's construction is adapted for common rail systems, which operate under very high working pressures and require maintaining appropriate rigidity and seal integrity of connections.

The precisely shaped geometry of the line ensures proper routing from the common rail manifold to the injector, maintaining factory mounting points and distances from adjacent components. This allows for seamless integration into the fuel supply system of dedicated BMW models, without the need for modifications or additional adaptations.

Purpose and Application in BMW Models

BMW E90, E91, E92 LCI, F10, and F01 with N57 engines utilize an advanced injection system where each injector line is tailored to the specific engine configuration. Using the correct component is crucial for:

• maintaining stable fuel pressure across the entire engine load range,
• correct injection timing and smooth operation of all cylinders,
• reducing vibrations and stresses within the fuel system,
• minimizing the risk of leaks and fuel spills under high pressure.

Selecting a line dedicated to a specific N57 engine allows for the preservation of the engine's factory operating parameters, which translates to proper dynamics, lower fuel consumption, and reduced exhaust smoke.

Benefits of Using an Original BMW Injector Line

Choosing an injector line from the BMW offering is the preferred solution wherever compliance with factory specifications is paramount. Key advantages include:

• Replication of original geometry – correct positioning of the line relative to the cylinder head, common rail manifold, and engine accessories.
• Compatibility with the N57 injection system – maintaining flow rates and pressure resistance in line with manufacturer's design.
• Integration with other system components – the line works seamlessly with factory injectors and the high-pressure rail.
• Possibility of using interchangeable part numbers – facilitates part selection based on BMW service documentation.

This makes the line a safe service solution for repairs and upgrades of the injection system in N57 engines, minimizing the risk of fitting or sealing issues.

Product Condition and Installation Aspects

The component is offered as a used part, allowing for economical repair of the injection system while maintaining original BMW specifications. The line is designed for installation in place of the factory component, using the original mounting points and standard common rail system connectors.

During installation, it is recommended to:

• apply the correct tightening torques in accordance with BMW service documentation,
• inspect the sealing surfaces on the common rail manifold and injector,
• check the system for leaks after the initial engine start, especially under high fuel pressure.

A correctly installed injector line contributes to stable fuel supply system operation and reduces the risk of failures related to leaks or pressure drops.

Injection System Diagnostics and Additional Materials

In case of problems with the N57 engine's operation – such as rough idling, power loss, or increased smoke – a comprehensive diagnosis of the injection system is recommended. An article describing common symptoms and consequences of neglect, available at the link: diesel injector failures – symptoms, consequences, and diagnostics, can be helpful. It allows for a better understanding of the relationships between the condition of injector lines, injectors, and other fuel system components.

Related Products from the BMW Injector Nozzles Category

If you are also looking for other components from the BMW Injector Nozzles category for your car, check out the BMW injector nozzles available in our store to complete the entire injection system in accordance with the manufacturer's original specifications.