Audi A4 B7 A6 C6 Brake Vacuum Pipe Hose Line Tube 8E0611931ER

Audi A4 B7 A6 C6 Brake Vacuum Pipe Hose Line Tube is an original component from the Brake hoses, lines and connectors group, designed for operation in the brake booster vacuum system. It ensures airtight vacuum routing between system components, which translates into stable and predictable brake pedal response and safe deceleration.

Specifications and technical data

• SKU: 8E0611931ER
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0611931ER
• Substitutable numbers: 8E0611931ER, 8E0 611 931 ER
• Part type: Pipe
• Category: Brake Hoses, Lines & Fittings

Purpose and function in the braking system

The brake vacuum pipe is responsible for transporting vacuum from the components that generate it in the engine to the brake booster system. A properly selected and airtight hose allows for maintaining the correct level of assistance, which is crucial for the consistent operation of the brakes in the Audi A4 B7 and Audi A6 C6.

In practice, this means that it:

• ensures stable brake assistance under various engine loads,
• reduces the risk of a decrease in braking efficiency resulting from leaks in the vacuum circuit,
• supports the uniform operation of the entire braking system, especially in emergency situations.

Construction and fitment for Audi

The offered pipe is a component dedicated to specific Audi models, which means proper routing in the engine bay and matching connection diameters to factory ports. As a result, installation is straightforward, without the need for modifications or the use of additional adapters.

The most important design advantages include:

• profiling adapted to the geometry of the engine bay in the Audi A4 B7 and A6 C6,
• OEM-designed connection points to braking system components,
• a solution prepared for operation under high-temperature conditions and variable loads.

Characteristics of the used component

The pipe comes from dismantling, which allows for maintaining factory fitment to the Audi braking system. Such components are often chosen for vehicle servicing where the priority is to maintain the original system configuration and compliance with the manufacturer's factory solutions.

In the case of vacuum pipes, it is particularly important to:

• maintain appropriate material flexibility in bend zones,
• ensure the tightness of connections along the entire length of the pipe,
• avoid non-original replacements with uncertain material specifications.

Benefits of using an original vacuum pipe

Using a pipe dedicated to the Audi A4 B7 and A6 C6 helps reduce the risk of braking system problems resulting from mismatched diameters or improper routing in the engine bay. Original geometry and mounting points facilitate trouble-free installation and maintain service clarity in the future.

Replacing the vacuum pipe is particularly recommended when symptoms appear such as:

• a harder than usual brake pedal,
• uneven assistance operation,
• suspicion of a leak in the vacuum circuit.

Braking system service expansion and technical knowledge

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

When selecting used braking system components, it is worth following a proven procedure for assessing technical condition. Detailed tips on how to safely choose components such as pipes, calipers, or control elements can be found in the article Second-hand braking system: how to safely select discs, calipers, and ABS?, which serves as a practical checklist for informed users.