Fuel Feed Pipe BMW E60 E65 E90 E91 M57N2 Hose Overflow Oil Line

Fuel Feed Pipe BMW E60 E65 E90 E91 M57N2 Hose Overflow Oil Line is an original fuel system component by BMW, designed for the M57N2 diesel engine family in popular 5 and 3 series models. Its precise geometry and factory-standard connectors ensure leak-free fuel delivery and stable engine operation, which is crucial for safety and engine performance.

Specifications and technical data

• SKU: 7799869
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7799869
• Substitutable numbers: 13537799869, 7799869, 13537799962, 7799962, 13537792870, 7792870, 3414979
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The described pipe belongs to the Lines, hoses and pipes category and is responsible for the controlled flow of fuel in the M57N2 engine supply system. The properly selected internal diameter and routing shape minimize pressure drops, supporting the correct operation of the common rail injection system.

Thanks to its factory design, the pipe works with original quick-connectors and mounts, which reduces the risk of leaks, air ingress, and unwanted vibrations during engine operation.

Benefits of using an original BMW pipe

Using an original fuel pipe in the M57N2 engine provides a number of practical service and operational benefits:

• Factory fit – the correct length, shape, and diameter ensure proper routing in the engine bay without tension or twisting.
• Stable injection system operation – maintaining the correct fuel flow parameters promotes smooth engine operation and easy starting.
• Reduced risk of leaks – original connectors and seals reduce the likelihood of leaks at critical points in the installation.
• Hassle-free installation – the pipe is ready to be installed in place of the factory component, without the need for any modifications to the system.

Product characteristics and condition

The fuel pipe comes from the BMW OE line, which means it complies with the factory quality and design standards used by the vehicle manufacturer. The item is offered as used, which allows for an economical repair of the fuel system while maintaining the original assembly specifications.

To facilitate part selection, the pipe has an assigned OEM part number and associated interchangeable numbers, which allows for precise verification of compatibility with a specific engine configuration and vehicle model year.

Selection and application in service practice

When replacing a fuel pipe in M57N2 units, it is crucial to match the component to the specific BMW model and engine version. In workshop practice, this type of pipe is used both when repairing leaks and during comprehensive work on the fuel system, e.g., after disassembling engine accessories.

It is worth paying attention to compliance with the manufacturer's markings to maintain the original routing of the pipe, avoid collisions with other components in the engine bay, and ensure adequate resistance to temperature and vibrations occurring in the vicinity of the engine.

Fuel system expansion and additional materials

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as additional fuel lines, hoses, or pipes, check out the available parts in the BMW lines, hoses and pipes category.

For more advanced work on the engine – especially when you are considering replacing the complete engine – a practical guide describing how to safely buy a used engine may be helpful; you can find it in the article How to buy a used car engine and avoid a bad deal – a step-by-step guide.