BMW F10 F20 F30 LCI B47 Diesel Fuel Return Line Pipe Hose Tube 8514102

BMW F10 F20 F30 LCI B47 Diesel Fuel Return Line Pipe Hose Tube is an original fuel system component designed for BMW 3 Series F30 diesel engines with the B47 unit. Engineered by BMW, it ensures proper drainage of excess fuel and stable operation of the injection system in a Diesel engine, which translates into smooth performance and operational safety.

Specifications and technical data

• SKU: 8514102
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8514102
• Substitutable numbers: 8514102, 13538514102, 8514094, 13538514094, 8583458, 13538583458, 8516196, 13538516196
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The fuel return line in the B47 engine is responsible for the controlled return of excess diesel fuel from the injection system components back to the circuit. A properly selected fuel return pipe stabilizes pressure in the rail and injectors, reduces the risk of air entering the system, and supports uniform operation of all cylinders. In the event of a leak or damage to this component, issues such as starting problems, power loss, or uneven engine operation may occur, which is why its condition has a direct impact on the reliability of the entire system.

Construction and fitment for BMW F30 B47

The offered line belongs to the group of components referred to as Lines, hoses, and pipes, dedicated to working with Diesel fuel. The design is adapted to the geometry of the BMW F30 engine bay with the B47 unit, which facilitates routing the line according to the factory path and minimizes stress during engine operation. Properly selected connection diameters and the shape of the line sections ensure a tight connection with other fuel system components without the need for modifications.

Benefits of using an original BMW line

Using an original return line in a BMW diesel engine provides a number of practical benefits:

• maintaining factory operating parameters of the injection system in a Diesel engine,
• secure fitment to mounts and connectors in the B47 unit,
• reduction of the risk of fuel leaks and pressure drops,
• easier diagnostics and maintenance due to compliance with manufacturer documentation.

For users planning a more extensive upgrade or repair of the fuel system in a BMW, it is also worth considering other elements from the same group, available in the category Lines, hoses, and pipes, which allows for a consistent refresh of the entire fuel supply path.

Application in repair projects and modifications

The fuel return line in the B47 engine is important not only for standard replacement of worn parts but also in projects related to improving the performance of a diesel unit. Stable fuel return and maintaining proper pressure in the injection system are the foundation for safely increasing power and torque. If you are considering modifications to your Diesel BMW, it is worth checking out the guide how to increase engine power using properly selected parts, which shows how to combine fuel system elements with other components in a thoughtful and safe manner.

Part condition and installation aspects

The offered item is a used part, which allows for economical repair while maintaining the original manufacturer's specifications. This type of fuel return line is usually installed directly, using factory connectors and brackets, without the need to interfere with the engine structure. During installation, it is recommended to:

• thoroughly clean the sockets and connectors before installing the line,
• check the condition of other surrounding fuel lines,
• verify system tightness after the first engine start.

This approach allows you to fully utilize the advantages of using an original BMW fuel return line and reduce the risk of subsequent leaks.

Summary

BMW F10 F20 F30 LCI B47 Diesel Fuel Return Line Pipe Hose Tube is the right choice for users who want to restore the proper operation of the fuel system in a diesel engine while maintaining factory parameters. Its original origin, fitment for the B47 unit, and easy installation make it a practical solution both for standard repairs and for more advanced projects related to the operation of a Diesel engine in a BMW 3 Series F30.