Audi S6 C6 Brake Vacuum Pipe Hose Line Tube Return Valve 4F2611931AC

Audi S6 C6 Brake Vacuum Pipe Hose Line Tube Return Valve is a component from the Brake hoses, lines and connectors group, responsible for the proper evacuation of vacuum and stable operation of the brake booster. This is an OEM solution, designed specifically for Audi models, ensuring consistency with the factory brake system design and predictable braking performance.

Specifications and technical data

• SKU: RHD-4F2611931AC
• Mark: Audi
• Condition: Used
• OEM Part Number: 4F2611931AC
• Substitutable numbers: 4F2611931AC, 4F2 611 931 AC
• Category: Brake Hoses, Lines & Fittings

Function and role in the brake system

The presented vacuum pipe with a check valve is responsible for the safe transfer of vacuum between the brake system components, which translates into stable servo operation and repeatable braking force. A properly selected pipe minimizes the risk of reduced brake efficiency, leaks, and unwanted fluctuations in brake pedal firmness.

Thanks to a design compliant with factory Audi standards, the pipe maintains the correct routing geometry in the engine bay, which limits stress, twisting, and potential chafing during operation. The integrated check valve maintains vacuum in the system even under variable engine load, which is particularly important during dynamic driving.

Compatibility and fitment for Audi

As an OEM component intended for the Audi S6 C6, the pipe is designed for full compatibility with the factory brake system of this generation. The appropriate connection diameters, shape, and mounting points allow for installation without modifications, which facilitates the mechanic's work and reduces the risk of assembly errors.

The product has a dedicated part number and replacement numbers, which allows for precise verification of compatibility via VIN or OEM number in Audi catalogs. This allows you to consciously replace a worn or leaking pipe with a component of the same specification, maintaining the brake system's operating parameters at the factory level.

Product characteristics and condition

The offered vacuum pipe is a used part, sourced from dismantling, which allows you to combine an attractive price with the preservation of original build quality. A used OEM component usually fits better into the existing system than cheap replacements with uncertain geometry or material hardness. This is especially important in the case of vacuum pipes, where flexibility, temperature resistance, and tightness have a direct impact on driving safety.

By choosing an original pipe with a check valve, you reduce the risk of problems such as uneven servo operation, air ingress, or unpredictable brake pedal behavior. This is a practical solution for users who want to restore the proper operation of the brake system without interfering with its design.

Benefits of using an original vacuum pipe

• Factory fitment for the Audi S6 C6 brake system, with no modifications required.
• Constant vacuum maintenance thanks to the integrated check valve.
• Reduced risk of leaks and loss of braking efficiency.
• Consistency with other Audi brake system components, which facilitates diagnostics and service.
• Possibility of verification via OEM number and replacement numbers in the manufacturer's catalogs.

Support for selecting used brake components

When replacing the vacuum pipe, it is worth simultaneously assessing the condition of other brake system components, such as discs, calipers, or ABS system elements. To take a conscious approach to purchasing used parts and verify their suitability, the following guide will be helpful: Second-hand brake system: how to safely select discs, calipers, and ABS?

If you are planning a comprehensive repair or upgrade of the braking zone in your Audi and need other elements from the same group, such as flexible hoses, rigid lines, or servo connectors, check the available parts in the Audi brake hoses, lines and connectors category.