Mini Cooper One D R55 R56 Diesel W16 Fuel Pipe Hose Lines 7810129

Mini D R55 R56 W16 Diesel Fuel Line is a specialized component of the diesel fuel system, designed for Mini D series diesel engines. It is responsible for precisely delivering fuel to the injection system, which directly impacts the stable operation of the engine unit and operational safety.

Specifications and technical data

• SKU: 7810129
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7810129
• Substitutable numbers: 7810129, 13537810129, 13537806004, 7806004, 13537806005, 7806005, 1574T6
• Fuel type: Diesel
• Category: Fuel Injectors

Purpose and Role in the Injection System

The fuel line for Diesel engines in Mini D R55 and R56 models operates under high pressure and variable temperatures, so its construction is adapted to the requirements of modern diesel units. A properly selected line minimizes the risk of pressure drops, leaks, and problems with engine starting and running smoothness.

This component works with the injection system in the injector nozzles category, ensuring stable fuel supply to individual cylinders. A correctly chosen line reduces the risk of air entering the system, which translates to smooth engine operation, better throttle response, and more predictable performance.

Compatibility and Replacement Numbers

The offered fuel line is an OEM part, designed to maintain factory operating parameters of the fuel system. The product has a dedicated part number and a set of interchangeable numbers, which facilitates the selection of the correct component during the replacement or repair of the injection system.

Thanks to the use of reference numbers, it is possible to precisely match the line to a specific configuration of a Mini diesel engine. This is particularly important for modern diesel units, where assembly tolerances and fuel flow parameters are strictly defined by the manufacturer.

Benefits of Using an Original Fuel Line

Using a fuel line that complies with factory specifications offers a number of practical benefits for the vehicle owner:

• Stable Diesel Engine Supply – maintaining proper fuel pressure across the entire load range.
• Better Cooperation with Injector Nozzles – reducing the risk of uneven engine operation and power loss.
• Reduced Risk of Leaks – fitted connectors and line geometry reduce the possibility of leaks.
• Appropriate Resistance to Diesel Fuel – the line material is adapted for prolonged contact with diesel fuel.
• Maintenance of Factory Operating Parameters – preserving the characteristics of starting, combustion, and vehicle dynamics.

Condition, Installation, and Operation

The fuel line is offered as a used part, allowing for economical repair of the fuel system while maintaining near-factory parameters. Before installation, it is recommended to verify the seal and check the connection sockets to ensure proper seating in the system.

When replacing the fuel line in a diesel engine, it is worth paying attention to:

• Proper routing of the line – avoiding kinks and stresses that can affect fuel flow,
• System cleanliness – preventing contaminants from entering the injector nozzles,
• Post-start check – verifying the seal after the first start and a short test drive.

Technical Support and Additional Materials

If you want to better understand how the condition of the fuel line and the entire fuel system affects the operation of a diesel engine, it is worth reading the guide: Diesel Injector Faults – How to Recognize Them and What Their Neglect Entails. There you will find practical information on signs of wear, diagnostics, and the consequences of neglecting the injection system.

If you are looking for other components in the injector nozzles category dedicated to this brand, check out the Mini injector nozzles available in our store to comprehensively care for your vehicle's fuel system.

For users interested in longer and trouble-free operation of dismantled components, we have also prepared a practical guide: How to Extend the Lifespan of Used Car Parts, containing tips on maintenance and proper use of components.