Audi A4 B8 Brake Servo Booster Master Cylinder Unit 8K0612107B

Audi A4 B8 Brake Servo Booster Master Cylinder Unit is a component from the Brake boosters and proportioning valves group, designed specifically for the braking system of Audi vehicles. It is responsible for effectively assisting the pressure force on the brake pedal, which translates into stable, predictable, and comfortable deceleration during daily use.

Specifications and technical data

• SKU: 8K0612107B
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0612107B
• Substitutable numbers: 8K0612107B, 8K0 612 107 B
• Category: Brake Servos

Purpose and function in the braking system

The presented brake servo operates in the vacuum part of the braking system, increasing the force transmitted from the pedal to the master brake cylinder. This gives the driver more precise control over the vehicle with less effort, which is particularly noticeable during emergency braking and in city traffic.

A component from this group is crucial for maintaining the proper characteristics of the brake pedal – from the first phase of pressure to full deceleration. A properly selected servo helps maintain a repeatable system response, which is important for both safety and driving comfort.

Benefits of using an original Audi servo

The brake servo from this offer comes from a line designed for the Audi brand, which means maintaining the factory operating parameters of the braking system. The original design ensures:

• consistency with the factory braking force characteristics,
• proper fitment to mounts and accessories in the engine compartment,
• compatibility with other braking system components from the same vehicle platform.

As a result, installation is straightforward, without the need for modifications or additional adapters, and the system retains parameters close to the factory configuration.

Characteristics of the used component

The offered brake servo is a used component, which is a beneficial solution for users looking for OEM parts at a reasonable price while maintaining appropriate build quality. This type of component, sourced from disassembly, allows for an economical repair of the braking system without sacrificing the vehicle manufacturer's original specifications.

Choosing a used servo from this group is particularly attractive for maintenance repairs, where the priority is to maintain the factory design of the system while optimizing service costs.

Integration with other braking system components

The brake servo works directly with the master brake cylinder, brake lines, and actuators at the wheels. A properly selected component from this group:

• stabilizes operating pressure in the system during intensive braking,
• reduces driver fatigue during frequent use of the brake pedal,
• supports even distribution of braking force between the vehicle's axles.

By maintaining compliance with Audi's factory braking system design, the servo helps maintain predictable vehicle behavior in various road conditions.

Expanding brake system upgrades

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 additional servos, brake proportioning valves, or related assistance components, check the available parts in the Audi brake boosters and proportioning valves category.

Technical support and part selection

When selecting braking system elements and other vehicle components, it is worth paying attention to the consistency of the entire system – from brakes to systems affecting driving comfort. Additional information on how to consciously choose used OEM components and how to plan service within key vehicle systems can be found in the article Air conditioning and heating – part selection and maintenance for year-round comfort.