BMW 3 Series E90 E91 E92 E93 330d M57N2 Fuel Feed Line Pipe 7789775

BMW E90 E91 E92 E93 330d M57N2 Fuel Line is an original fuel system component designed for the M57N2 engine in the BMW 3 Series E90–E93. With its factory geometry and fit, it ensures stable fuel delivery and proper cooperation with other system components. A used OEM part is a sensible choice for servicing advanced BMW diesel engines when you want to maintain optimal engine performance.

Specifications and technical data

• SKU: 7789775
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8514451
• Substitutable numbers: 13537789775, 7789775, 13537801660, 7801660, 13537799962, 7799962, 13537799869, 7799869, 13537792870, 7792870
• Category: Hoses, Lines & Pipes

Purpose and Role in the Fuel System

The fuel line in the M57N2 engine is responsible for precisely delivering fuel between fuel system components while maintaining the correct working pressure. This is particularly crucial in BMW 3 Series E90, E91, E92, and E93 330d models, as the diesel engine operates under high load and requires a stable, leak-free fuel path.

The original line from the Lines, Hoses, and Tubes group ensures:

• maintenance of the factory fuel routing,
• correct positioning relative to engine accessories,
• appropriate resistance to temperature and vibrations typical for the M57N2 unit.

Why Choose an Original BMW Fuel Line

In a diesel engine's fuel system, leak-proof operation, pressure resistance, and compliance with the manufacturer's design are paramount. The Original BMW Fuel Line is specifically designed for the engine bay geometry of the 3 Series with the 330d unit, minimizing the risk of stress, abrasion, and leaks that can occur with differently shaped aftermarket parts.

The main benefits of using an original component include:

• secure fit to factory mounts and brackets,
• maintenance of fuel flow parameters consistent with BMW's specifications,
• reduced risk of starting and under-load operation issues resulting from improper fueling.

Condition of the Part and Installation Aspects

The fuel line is offered as a used original part, allowing for economical repair while retaining a component that is compliant with the manufacturer's design. This type of part is particularly valuable when servicing specialized units where compliance with factory specifications and proper fit with other components are essential.

During installation, pay attention to:

• correct routing of the line in the factory guides,
• checking connection points for leaks after starting the engine,
• applying appropriate tightening torques according to BMW service documentation.

Assistance with Selection and Additional Information

A dedicated OEM part number and related replacement numbers are available for this fuel line, facilitating compatibility verification with specific BMW E90, E91, E92, or E93 330d versions. If in doubt, compare the markings with your vehicle's documentation or the manufacturer's catalog to ensure the part matches your M57N2 engine configuration.

If you are planning a comprehensive repair or upgrade of the fuel system area in your BMW and need other parts from the same group, such as supply lines, return hoses, or vent tubes, check the available parts in the BMW Lines, Hoses, and Tubes category.

If you want to better understand the specifics of E90 series powertrains and plan your servicing consciously, check out the guide Troublesome BMW E90 Engines: Find Out What Can Ruin Your Budget!, which discusses common problems and critical areas of these models.