Audi A4 B8 Brake Servo Vacuum Pipe Hose Line Return Valve 8K0611931BH

Audi A4 B8 Brake Servo Vacuum Pipe Hose Line Return Valve is a vacuum system component responsible for stable brake assistance in your Audi. A properly selected hose ensures correct vacuum transfer from the pump to the servo, which translates into predictable brake pedal response and safe deceleration. This is a practical solution for users who want to restore the proper operation of the braking system without compromising on quality.

Specifications and technical data

• SKU: 8K0611931BH
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0611931BH
• Substitutable numbers: 8K0611931BH, 8K0 611 931 BH
• Category: Vacuum Pumps

Function and role in the braking system

The brake servo vacuum hose in the Audi A4 B8 is responsible for transporting vacuum from the pump to the servo, enabling effective braking assistance. Maintaining the tightness and patency of this component is crucial for:

• stable assistance force on the brake pedal,
• repeatable braking system response in various driving conditions,
• reducing the risk of increased braking distance.

A properly selected hose allows for maintaining consistent brake servo operation, which has a direct impact on the comfort and safety of daily vehicle use.

Compatibility and fitment for Audi

The offered hose has been designed with the architecture of the Audi braking system in mind, ensuring it maintains factory routing geometry and connection points. This means:

• easy fitment to the existing vacuum installation,
• correct positioning relative to other components in the engine bay,
• minimization of the risk of stress and leaks at the connections.

Such a solution facilitates quick installation and limits the need for additional modifications, which is particularly important when servicing the braking system.

Component condition and service application

The hose comes from a group of used parts, which allows for economical repair while maintaining the original operating characteristics of the system. This is a good solution in situations where:

• the existing hose shows signs of leaks or cracks,
• there are problems with a hard brake pedal,
• it is necessary to replace the component as part of a broader vacuum system service.

Using an original hose from the same design group helps maintain the consistency of the servo and vacuum pump operating parameters.

Vacuum system and other vehicle components

A functional brake servo vacuum hose works with the vacuum pump and the servo, creating a complete vacuum path. Any leaks in this area can affect:

• stability of brake assistance,
• operation of the power unit under specific load conditions,
• comfort of using the vehicle in city traffic and on the road.

Regular inspection of vacuum hoses and their replacement in case of wear is a simple way to maintain consistent braking system operation and predictable vehicle behavior.

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 vacuum lines, connectors, or components working with the vacuum pump, check the available parts in the Audi vacuum pumps category.

Technical support and part selection

When selecting vacuum and braking system components, it is worth paying attention to compliance with the manufacturer's markings and the configuration of the specific vehicle unit. Solutions used for other components, such as the fuel system, may also be helpful – the principles of diagnostics, identification by markings, and assessment of operational condition are similar. To better understand the process of selecting components by manufacturer markings and the principles of their regeneration and operation, it is worth reading the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.