Audi Skoda Seat VW Servo Reservoir Brake Fluid Tank Cap 5Q0611349B

Audi Skoda Seat VW Servo Reservoir Brake Fluid Tank Cap is an original VAG group component designed to tightly seal the brake fluid reservoir and stabilize pressure within the system. Thanks to its factory OEM design, the cap ensures proper operation of the braking system as well as safe venting of overpressure and fluid vapors.

Specifications and technical data

• SKU: 5Q0611349B
• Mark: Audi
• Condition: Used
• OEM Part Number: 5Q0611349B
• Substitutable numbers: 5Q0611349B, 5Q0 611 349 B
• Category: Reservoirs & Caps

Purpose and technical function

The brake fluid reservoir cap is responsible for maintaining the reservoir's seal, protecting the fluid from contaminants, and controlling system pressure. In Audi, Skoda, Seat, and VW vehicles, this component works directly with the brake master cylinder and lines, which is why its precise design is crucial for braking force stability.

Original manufacturing ensures:

• a precise fit to the reservoir's thread and shape,
• a properly calibrated vent valve,
• resistance to brake fluid and temperature fluctuations.

Benefits of using an original cap

Using a factory cap instead of a worn or leaking component helps restore proper operating conditions for the braking system. Stable pressure in the reservoir reduces the risk of air entering the system, and proper sealing minimizes the possibility of moisture ingress into the fluid, which affects its boiling point and braking efficiency.

Compared to aftermarket replacements, the original VAG group cap offers:

• a secure fit with the factory reservoir,
• compliance with vehicle manufacturer requirements,
• easier identification and selection based on catalog numbers.

Product condition and service application

The offered cap falls under the Brake fluid reservoirs and caps category and is a used item, making it an attractive solution for budget repairs and servicing older Audi, Skoda, Seat, and VW models. For workshops and individual users, this means the possibility of an economical replacement while maintaining original part specifications.

This solution is particularly effective in situations where:

• the existing cap shows signs of leaks or mechanical damage,
• replacement of the component is necessary after working on the braking system,
• maintaining the original system design is a priority.

Part selection and technical support

When selecting a brake fluid reservoir cap, it is crucial to compare markings with the existing component and verify compatibility with the specific vehicle model. In case of doubt, it is recommended to use catalog numbers and service documentation to ensure full compatibility with the vehicle's braking system.

To better understand how to safely use used braking system components and optimize service costs, read the article: Brake calipers under the microscope – how to choose verified recycled parts for the braking system.

Brake system expansion in Audi

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 reservoirs, additional caps, or related hardware, check out the available parts in the Audi brake fluid reservoirs and caps category.