Audi A7 4G8 A6 C7 Allroad Leak Line Return Leakage Hose 059130218AN

The Audi A7 4G8 A6 C7 Allroad Leak Return Hose is an original fuel system component from the Hoses, Pipes, and Tubes group, designed for use in select premium Audi models. The precise construction of the hose ensures proper working medium return and stable injector system operation, contributing to safe vehicle operation.

Specifications and technical data

• SKU: 059130218AN
• Mark: Audi
• Condition: Used
• OEM Part Number: 059130218AN
• Substitutable numbers: 059130218AN, 059 130 218 AN
• Part type: Line
• Category: Hoses, Lines & Pipes

Hose Purpose and Function

The leak return hose in Audi A7 4G8, A6 C7, and Allroad models is responsible for the controlled drainage of excess fuel or medium from the injection system components back into the circulation. A correctly selected and sealed hose:

• stabilizes pressure in the engine fuel supply system,
• limits the risk of uncontrolled leaks in the engine bay,
• supports the uniform operation of injectors and fuel accessories,
• facilitates system diagnostics and servicing during subsequent inspections.

Thanks to its factory fit for a specific engine architecture, the hose maintains the correct routing geometry, minimizing stress and improving the durability of the entire system.

Construction and Compatibility with Audi Models

The offered component comes from the Audi OE line, meaning it adheres to original manufacturing standards, connection diameters, and working lengths. The construction is designed to:

• ensure compatibility with factory connectors in Audi A7 4G8, A6 C7, and Allroad,
• maintain appropriate flexibility while being resistant to temperature and vibrations,
• reduce the risk of micro-cracks and leaks during long-term operation.

This precise fit facilitates installation and allows for the preservation of the original hose routing in the engine bay, without the need for modifications or additional adapters.

Benefits of Using an Original Return Hose

Using a leak return hose that matches the factory Audi specification offers tangible servicing and operational benefits:

• Stable Fuel System Operation – proper medium flow and return limits pressure fluctuations and supports uniform fuel delivery.
• Improved System Sealing – fitted connectors and connection diameters reduce the risk of fuel seepage at critical points.
• Hassle-Free Installation – the original hose geometry allows for installation in existing brackets and guides, reducing mechanic's work time.
• Consistency with the Rest of the System – maintaining the factory hose routing facilitates subsequent inspections and diagnostics.

Condition, Verification, and Service Application

The component is offered as a used part, making it an attractive solution for repairs where reasonable cost is important while maintaining the original Audi specification. The hose is particularly suitable for situations where:

• the existing hose has suffered mechanical damage or abrasion,
• there are signs of leaks in the injection system area,
• the component needs to be replaced with one that conforms to the factory standard, without using universal aftermarket parts.

For workshops specializing in the Audi brand, this hose is a practical service component that allows for the restoration of correct fuel supply system operation in premium vehicles.

If you are planning a comprehensive repair or upgrade of the fuel system area in your Audi and need other elements from the same group, such as flexible supply hoses, rigid guide pipes, or auxiliary return hoses, check the available parts in the Audi Hoses, Pipes, and Tubes category.

For drivers who are also considering servicing or replacing their gearbox, a useful addition to your knowledge might be a guide describing the differences between manual, automatic, and DSG transmissions, common fault symptoms, and tips for buying a used gearbox – detailed information can be found in the article Gearbox: Manual, Automatic, or DSG – Common Faults and Used Gearbox Buying Guide.