Audi A5 Power Brake Servo Unit Master Cylinder 8K0612107D

Audi A5 Power Brake Servo Unit Master Cylinder is a component from the Brake Servos and Proportioning Valves group, designed for the braking system of Audi vehicles. It is responsible for effectively assisting the pressure applied to the brake pedal, which translates into stable, predictable, and safe deceleration during daily use.

Specifications and technical data

• SKU: 8K0612107D
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0612107D
• Substitutable numbers: 8K0612107D, 8K0 612 107 D
• Category: Brake Servos

Function and role in the braking system

The brake servo in an Audi is responsible for increasing the force generated by the driver on the brake pedal, utilizing vacuum from the engine or vacuum system. This allows for powerful yet precisely controllable braking with relatively little pressure on the pedal.

A functional servo ensures:

• stable pressure in the brake circuits during emergency braking,
• repeatable pedal operating characteristics,
• better vehicle control in emergency situations.

Benefits of using an original Audi component

Using a servo from the Brake Servos and Proportioning Valves group dedicated to Audi allows you to maintain the factory characteristics of the braking system. The original design is engineered for specific vehicle parameters, which translates into:

• proper fitment to the master cylinder and body mounts,
• correct integration with the ABS/ESP system,
• maintenance of the manufacturer-specified assistance force.

As a result, after replacing the servo, the driver experiences predictable vehicle behavior during braking that is consistent with factory specifications, without unwanted changes in pedal travel or firmness.

Operational and installation characteristics

The brake servo from this series is designed as a component that works with the factory Audi braking system, which facilitates the installation process in a specialized workshop. The design includes standard mounting points and connections to the master cylinder and vacuum system, which limits the need for additional modifications.

In practice, this means that after proper installation and bleeding of the braking system, you can achieve:

• even assistance across the entire pedal travel range,
• consistent operation with other braking system components,
• comfortable, predictable vehicle response to driver inputs.

Condition and use in vehicle service

The offered component comes from the used original parts segment, which allows for an economical repair of the braking system while maintaining compliance with Audi's factory specifications. This type of component is often chosen for:

• regeneration or repair of the braking system after loss of assistance,
• resolving issues with a hard brake pedal,
• comprehensive maintenance of the braking zone after a collision or long-term use.

Expanding your Audi braking system upgrade

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 servos, proportioning valves, or related assistance components, check out the available parts in the Audi Brake Servos and Proportioning Valves category.

How to care for used braking system components

To maximize the potential of a used brake servo, it is worth paying attention to proper installation, checking the vacuum system for leaks, and regular inspections of the entire braking system. Practical tips on the operation and maintenance of used components can be found in the article How to extend the life of used car parts?, which describes proven methods for caring for salvaged components.