Audi A4 S4 RS4 B7 Brake Vacuum Pipe Hose Line Tube 8E0611931EJ

Description

Audi A4 S4 RS4 B7 Brake Vacuum Pipe Hose Line Tube is a brake system component responsible for the stable delivery of vacuum to the brake booster, which translates into predictable and safe brake pedal operation. This component from the Brake hoses, lines and connectors group has been designed specifically for mid-size Audi models, ensuring proper compatibility with the factory brake system. Using an original pre-owned part allows you to maintain a design consistent with the manufacturer’s specifications, which is particularly important for the precise brake systems in the B7 generation A4, S4, and RS4 models.

Specifications and technical data

• SKU: RHD-8E0611931EJ
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0611931EJ
• Substitutable numbers: 8E0611931EJ, 8E0 611 931 EJ
• Part type: Pipe
• Category: Brake Hoses, Lines & Fittings

Purpose and function in the brake system

The presented vacuum pipe operates in the area between the vacuum source and the brake booster, responsible for maintaining the appropriate operating pressure during braking. In Audi A4, S4, and RS4 B7 vehicles, this is crucial for:

• stable brake assist force under various engine loads,
• consistent brake pedal travel,
• reducing the risk of a drop in braking efficiency during rapid acceleration and braking.

Thanks to its fitment for the specific Audi platform, the pipe maintains the correct routing geometry in the engine bay, which minimizes stress, twisting, and the risk of leaks during long-term operation.

Benefits of using an original Audi pipe

Choosing an original vacuum pipe from the Brake hoses, lines and connectors group instead of universal replacements allows you to maintain the factory operating parameters of the system. The most important advantages include:

• precise fit to the ports and mounts on the body and engine accessories,
• maintaining the manufacturer-designed internal diameter of the pipe, which affects the speed of vacuum build-up,
• material resistance to temperature and vibrations typical for the engines used in the Audi A4, S4, and RS4 B7,
• consistency with other brake system components, which facilitates diagnostics and service.

An element configured in this way helps maintain predictable vehicle behavior during braking, which is especially important in high-performance versions such as the S4 and RS4.

Professional installation and service aspects

Due to its operation in a critical area of the brake system, the installation of the vacuum pipe should be performed in accordance with Audi service procedures. In practice, this means:

• checking the condition of ports, clamps, and connectors before installation,
• routing the pipe according to the factory path, maintaining distance from high-heat engine components,
• checking the vacuum system for leaks after installation, preferably using appropriate diagnostic tools.

An original pre-owned part represents a reasonable compromise between cost and maintaining factory parameters, provided it is installed correctly and its condition is verified by an experienced service center.

Safe selection of pre-owned brake system components

When assembling a brake system from second-hand components, it is worth following a proven procedure for selection and technical condition assessment. A detailed checklist, covering items such as hoses, discs, calipers, and control elements, can be found in the article: Second-hand brake system – how to safely select key components. This is a practical addition to your knowledge when planning repairs or upgrades to the brakes in your Audi.

Expanding your Audi brake system upgrade

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 booster connectors, check the available parts in the Audi brake hoses, lines and connectors category.

Additionally, when deciding between original, replacement, and used parts, a guide comparing the costs and benefits of individual solutions may be helpful: original, replacement, or used – which parts are the most cost-effective. This makes it easier to choose a service strategy tailored to a specific Audi A4, S4, or RS4 B7 vehicle.