BMW X3 F25 B47 Diesel Fuel Supply Feed Pipes Engine Injector Line Hose 8514099

BMW X3 F25 B47 Diesel Fuel Supply Feed Pipes Engine Injector Line Hose is a diesel fuel system component designed for diesel engines in the BMW X3 F25 model with the B47 unit. It is responsible for the controlled return of fuel from the injectors, which supports stable operation of the injection system and helps maintain correct pressure parameters. Thanks to the use of the original BMW design, the hose maintains the proper fuel routing geometry and compatibility with factory engine equipment.

Specifications and technical data

• SKU: 8514099-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8514099
• Substitutable numbers: 8514099, 13538514099
• Fuel type: Diesel
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The fuel return hose in the B47 diesel engine plays a vital role in the fuel circuit between the injectors and the return system. It is responsible for draining excess diesel fuel that was not used in the injection process back to the supply system. A properly selected hose helps reduce pressure fluctuations, supports uniform injector operation, and reduces the risk of air entering the system.

In the case of diesel units such as the B47, stable fuel flow has a direct impact on engine refinement, exhaust emissions, and the durability of precision components. Using a fuel return hose matched to the specific BMW X3 F25 model allows for maintaining the parameters specified by the manufacturer and facilitates the diagnosis of potential faults within the injection system.

Compatibility with BMW X3 F25 B47

The offered element has been designed for use in the BMW X3 F25 with a B47 diesel engine, which means it is matched to the factory layout of the injectors, fuel rail, and other supply system components. The appropriate length, diameter, and shape of the hose allow for its installation in the original mounting points without the need for any modifications to the installation.

Such a fit translates into:

• maintaining the correct fuel routing path in the engine compartment,
• reducing mechanical stress and vibrations acting on the hose,
• easier installation and removal during injection system service.

Element characteristics and advantages of use

The fuel return hose from this offer comes from the Fuel pumps and level sensors group, which means it has been designed to work in a diesel environment and in cooperation with precision supply system components. The hose construction is adapted to the operating parameters of the diesel engine, including typical temperatures and pressures occurring in the fuel return circuit.

Key benefits of using the original fuel return hose include:

• maintaining stable fuel flow in the return circuit,
• reducing the risk of leaks at the connections with the injectors,
• better repeatability of injection system operating parameters compared to replacements of uncertain origin.

The used element allows for an economical repair of the fuel system while maintaining the original manufacturer's specifications, which is particularly important in the case of modern diesel units.

Professional use in service and diagnostics

Replacing the fuel return hose is often performed during work related to injectors, the common rail, or when diagnosing problems with starting and uneven operation of a diesel engine. Using an element dedicated to the BMW X3 F25 B47 makes it easier for mechanics to maintain the factory hose routing layout, which is important for both safety and subsequent service maintenance.

The hose can be used as a spare part in the event of:

• detecting leaks in the fuel return circuit,
• mechanical damage to the hose (cracks, abrasions),
• modernization or completing the system after previous repairs.

If you are planning a comprehensive repair or modernization of the fuel supply area in your BMW and need other elements from the same group, such as supply lines, pump basket elements, or return path components, check the available parts in the BMW fuel pumps and level sensors category.

Used element and choosing parts for the fuel system

When choosing a used fuel return hose, it is worth paying attention to its origin and compatibility with the specific model and fuel type. In the case of diesel engines such as the B47, the proper selection of components is important for the durability of the injectors and the stability of the entire system. A used original element often represents a favorable compromise between the cost of repair and maintaining factory parameters.

If you are also considering using other used components in your car, including electronic elements that work with the supply system, it is worth familiarizing yourself with advice on selecting and verifying such parts – you will find practical tips in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.