Audi Q5 FY Brake Sevo Master Cylinder Fluid Tank ReservoirUnit 80C612107

Brake booster with master cylinder and fluid reservoir for Audi Q5 FY is an original brake system component designed for precise integration with the vehicle's factory installation. Its construction, compliant with OEM standards, ensures stable braking assistance, predictable pedal feel, and compatibility with other system components. This solution is for users who expect factory fitment, consistent performance parameters, and hassle-free installation.

Specifications and technical data

• SKU: RHD-80C612107
• Mark: Audi
• Condition: Used
• OEM Part Number: 80C612107
• Substitutable numbers: 80C612107, 80C 612 107
• Part type: Brake Servo & Master Cylinder
• Category: Brake Servos

Purpose and Function in the Audi Q5 FY Braking System

The described brake booster assembly with master cylinder and fluid reservoir is responsible for amplifying the force applied to the brake pedal and generating adequate pressure in the hydraulic circuits. In practice, this translates to:

• more predictable vehicle response to pedal application,
• reduced force required from the driver to brake,
• stable pressure maintenance in the system during prolonged braking.

In the Audi Q5 FY model, a correctly selected booster with a master cylinder is crucial for maintaining factory braking characteristics, ensuring even force distribution between axles, and proper interaction with safety systems such as ABS and ESP.

Construction of the Booster and Brake Force Regulator Assembly

This product belongs to the group of Brake Boosters and Brake Force Regulators, meaning it is responsible for both assistance and proper pressure metering in the circuits. The assembly includes:

• a brake booster generating vacuum assistance,
• a master brake cylinder responsible for distributing pressure to the circuits,
• a brake fluid reservoir with connection ports for the lines.

This configuration ensures component consistency, reduces the risk of leaks at connections, and simplifies installation in the engine bay, as the parts are factory-matched in terms of geometry and mounting points.

Benefits of Using an Original Used Part

Choosing an original, used brake booster assembly for your Audi allows you to maintain compliance with the vehicle's factory specifications while optimizing repair costs. Compared to aftermarket alternatives of uncertain origin, an OEM part ensures:

• secure fitment to mounting points and lines in the engine bay,
• preservation of the brake pedal characteristics designed by the manufacturer,
• correct interaction with the brake system's control electronics.

A used component of this caliber is a good solution when the existing booster shows signs of reduced assistance, an unstable activation point, or leaks within the master cylinder and reservoir.

Selection, Installation, and Service Aspects

To ensure a smooth installation, it is advisable to verify the part's compatibility with your specific Audi Q5 FY version before purchase, taking into account the vehicle's equipment and braking system configuration. Comparing the markings on the removed component and consulting the manufacturer's catalog or an Audi specialist mechanic can be helpful.

During installation, it is recommended to:

• inspect the condition of brake lines and connection seals,
• bleed the system according to the service procedure for the specific model,
• replace the brake fluid if its condition is unknown or the recommended interval has been exceeded.

This approach allows for the full utilization of the brake booster and brake force regulator assembly's potential and minimizes the risk of subsequent leaks or reduced braking effectiveness.

Expanding Your Audi Braking System Upgrade

If you are planning a comprehensive repair or upgrade of the braking zone in your Audi and require other parts from the same group, such as additional boosters, brake force regulators, or compatible master cylinders, check the available parts in the Audi Brake Boosters and Brake Force Regulators category.

When working on the braking system and components located in the engine bay, it is also worthwhile to ensure the proper functioning of systems responsible for driving comfort. Practical tips on selecting used OEM components, service schedules, and checking key systems can be found in the article Air Conditioning and Heating – Part Selection and Maintenance for Year-Round Comfort, which helps organize your inspection and repair plan for modern vehicles.