Audi Q7 Q8 4M VW Touareg Mk3 Brake Servo Vacuum Pipe Hose Line 4M2611931H

The Brake Servo Vacuum Hose for Audi Q7 / Q8 and VW Touareg Mk3 is an original part from the Hoses, Pipes, and Tubes group, designed for use in the brake assist system. It ensures stable vacuum transfer between the pump and the servo, which translates to predictable brake pedal response and safe deceleration in heavy premium SUVs.

Specifications and technical data

• SKU: RHD-4M2611931H
• Mark: Audi
• Condition: Used
• OEM Part Number: 4M2611931H
• Substitutable numbers: 4M2611931H, 4M2 611 931 H
• Category: Hoses, Lines & Pipes

Purpose and Function in the Braking System

This vacuum hose is specifically designed to work with the brake servo in Audi Q7, Audi Q8, and third-generation Volkswagen Touareg models. It is responsible for the sealed and stable transmission of vacuum, ensuring the braking system maintains the correct power assist characteristics and the driver receives consistent, predictable pedal feel.

The original design of the hose ensures:

• appropriately selected diameter and cross-section for vacuum flow,
• wall rigidity that prevents hose collapse under pressure changes,
• stable routing in the engine bay without the risk of rubbing against adjacent components.

Construction and Mounting Fit

This hose is part of a group of elements molded for specific installation layouts in Audi and VW SUVs, which facilitates installation and minimizes the risk of stress after fitting. Its shape and mounting points are adapted to the factory routing in the engine bay, ensuring that after replacement, the hose does not interfere with engine accessories or body components.

In practice, this means:

• secure seating on the servo and vacuum source spigots,
• maintenance of factory hose routing paths,
• reduced risk of leaks compared to universal aftermarket parts.

Benefits of Using an Original Hose

Using an original vacuum hose in an Audi Q7, Q8, or VW Touareg Mk3 allows for the braking system's operating parameters to be maintained in accordance with the manufacturer's specifications. A sealed hose limits vacuum drops, which is particularly important in heavy vehicles with powerful engines where the braking system operates under significant load.

Key benefits include, among others, stable brake assist characteristics, correct servo operation across a wide range of loads, and a reduced risk of increased braking distance due to hose leaks. The used OEM part offers a reasonable compromise between cost and maintaining factory-quality fit.

Item Condition and Service Application

The offered hose is in used condition, making it an attractive solution for maintenance repairs where replacing a damaged or leaking section of the vacuum system is necessary. It is suitable for both standard service repairs and for restoring full braking system functionality after interventions in the engine bay.

Before installation, a standard check of its seal and correct seating on the spigots is recommended to fully utilize the hose's potential and ensure proper brake servo operation in daily use.

System Expansion – Audi Hoses, Pipes, and Tubes

If you are planning a comprehensive repair or upgrade of the braking area in your Audi and need other parts from the same group, such as flexible hoses, rigid pipes, or additional vacuum line sections, check the available parts in the Audi Hoses, Pipes, and Tubes category.

For those interested in a broader perspective on the construction and modernization of VW Group models, including the selection of used components, an article discussing the design changes in the popular hot hatch might be helpful – Hot Hatch Legend: The Evolution of the VW Golf GTI from Mk1 to Mk8 – Design Changes and VW Car Parts.