VW Volkswagen Touareg AL Audi A4 S4 8H Fuel Pump Hose Line 3.0 TDI 059130309AH

VW Volkswagen Touareg AL Audi A4 S4 8H Fuel Pump Hose Line is an original component from the Lines, hoses and pipes group, designed for the 3.0 TDI diesel fuel supply system in selected Volkswagen and Audi models. It ensures precise fuel routing between system components, which translates into stable engine operation and proper compatibility with factory equipment.

Specifications and technical data

• SKU: 059130309AH
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 059130309AH
• Substitutable numbers: 059130309AH, 059 130 309 AH
• Part type: Pipe
• Category: Hoses, Lines & Pipes

Application in the 3.0 TDI fuel system

The fuel line in the 3.0 TDI engine is responsible for the safe transport of diesel fuel under high-pressure conditions and variable operating temperatures. In Volkswagen Touareg and Audi A4 / S4 8H models, this component works with the factory pump, rail, and injectors, which is why its proper fit is essential for:

• maintaining the tightness of the fuel supply system,
• stable fuel pressure across the entire load range,
• reducing the risk of air ingress and power loss,
• maintaining operating parameters in accordance with the manufacturer's specifications.

Thanks to a design consistent with factory solutions, the line integrates with original mounts and routing in the engine bay, which facilitates installation and maintenance.

Original origin and Volkswagen fitment

The component comes from the Volkswagen line, which means it maintains the geometry, diameters, and connections consistent with the manufacturer's factory documentation. In practice, this translates into:

• secure fitment with existing connectors in the Touareg and Audi A4 / S4 8H,
• no need for modifications to the fuel system,
• preservation of the original line routing in the engine bay.

Such fitment is particularly important in modern 3.0 TDI units, where the fuel system operates under high load and requires the maintenance of appropriate cross-sections and line lengths.

Performance characteristics and benefits of installation

Choosing an original fuel line for the 3.0 TDI engine allows for maintaining stable fuel system performance over the long term. Compared to aftermarket replacements, this component ensures:

• compliance with factory requirements regarding fuel flow,
• adequate resistance to vibrations and thermal loads in the engine bay,
• easier diagnostics and future service, thanks to the preservation of the original installation path.

This is a recommended solution for repairs where maintaining the engine's stock performance parameters and minimizing the risk of leaks in the fuel system is crucial.

Component condition and installation aspects

The fuel line is offered in used condition, which allows for economical repair while maintaining the manufacturer's original specifications. Before installation, a standard visual inspection, checking of connection ports, and proper positioning of the line according to the factory routing in the given model are recommended.

To ensure the safety of the fuel system, installation should be performed using appropriate tools and in accordance with the tightening torques specified for the given 3.0 TDI engine, which limits the risk of micro-leaks and subsequent fuel seepage.

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

If you are interested in a broader context of technical solutions used in premium class cars and want to better understand how manufacturers design fuel systems and select components, it is worth reading the article Evolution of the Mercedes S-Class: from W140 to W222 – innovations, model differences, and Mercedes auto parts over the years, which shows how approaches to the construction of key components have changed across subsequent generations.