BMW 3 Series E90 E91 E92 E93 Diesel Fuel Feed Return Line Pipe Tank 6765747

BMW 3 Series E90 E91 E92 E93 Diesel Fuel Feed Return Line Pipe Tank is an original fuel system component designed for diesel engines. It ensures a stable return of diesel fuel to the tank, which promotes smooth operation of the fuel system and proper fuel circulation. Thanks to its factory geometry and connectors, this hose from the Lines, hoses and pipes category allows for precise fitting to the installation in 3 Series E90–E93 bodies.

Specifications and technical data

• SKU: 6765747
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6765747
• Substitutable numbers: 16126765747, 6765747, KZ
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The offered fuel return line is a component of the Diesel engine fuel system in BMW 3 Series E90, E91, E92, and E93 generations. It is responsible for the safe discharge of excess fuel from the rail or pump back to the tank, which:

• stabilizes pressure in the fuel supply system,
• reduces the risk of air entering the lines,
• supports the proper operation of injectors and the high-pressure pump,
• ensures proper circulation of diesel fuel throughout the circuit.

By maintaining the original diameter and routing of the line, the fuel system retains its factory flow parameters, which is particularly important in modern diesel units.

Construction and fitment for BMW 3 Series E90–E93

The line belongs to the Lines, hoses and pipes group, meaning it has been designed to work in the demanding environment of the engine bay and the fuel tank area. The design of the line includes:

• routing along the original mounting points in the 3 Series body,
• use of connectors matched to factory BMW quick-connect fittings,
• resistance to contact with diesel fuel and typical operating temperatures of the fuel system.

Such fitment facilitates installation and limits the need for system modifications, which is important both during service repairs and when replacing a damaged section of the line.

Benefits of using an original BMW line

Using an original fuel return line in a BMW 3 Series E90/E91/E92/E93 brings a number of practical benefits:

• Factory compatibility – the line is designed for a specific BMW platform, which minimizes the risk of leaks and installation problems.
• Stable fuel system operation – proper fuel return helps maintain adequate pressure and improves the refinement of the diesel unit.
• Operational safety – a properly selected line reduces the risk of fuel leaks in the tank and chassis area.
• Consistency with other system components – the line works with factory brackets, covers, and other sections of the fuel installation.

Condition, service application, and part selection

The item comes from the BMW range and is intended for service applications in vehicles with diesel engines where it is necessary to replace a damaged or leaking fuel return line. In practice, a line of this type is chosen during:

• repairs after mechanical damage in the fuel tank area,
• fixing leaks in the return system,
• comprehensive maintenance of the fuel system in diesel engines.

Before purchasing, it is worth comparing the shape and routing of the line with the component installed in the car to confirm compatibility with the specific body version and fuel system configuration.

System completion and additional materials

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

When planning broader service work, it is also worth checking out tips on selecting used electronic components – you will find practical advice in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, which helps you make an informed approach to choosing used parts in modern cars.