Audi A5 8T A7 4G 8R Brake Pedal Box Assembly Automatic Gearbox 8K2721117

Audi A5 8T / A7 4G / Q5 8R Brake Pedal Assembly for Automatic Transmission is an original part from the Pedals, Pedal Covers, and Footrests group, designed for vehicles with gasoline engines and automatic transmissions. The OEM design ensures correct geometry, appropriate braking force leverage, and compatibility with the factory Audi braking system and electronics. This is a practical solution for both post-accident repairs and for completing missing elements in the pedal area.

Specifications and technical data

• SKU: RHD-8K2721117-4
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K2721117
• Substitutable numbers: 8K2721117, 8K2 721 117
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Pedal Assemblies, Pads & Parts

Purpose and Compatibility

The presented brake pedal assembly is designed for Audi A5 generation 8T, Audi A7 generation 4G, and Audi Q5 generation 8R models equipped with an automatic transmission. The structural system is adapted to work with the factory brake booster, sensors, and lever mechanism characteristic of these models.

The component is intended for vehicles with a gasoline engine, which is important for compatibility with the power steering system and the arrangement of components in the pedal compartment. This ensures a predictable installation process without the need for body modifications or interference with factory mountings.

Brake Pedal Assembly Construction and Function

The brake pedal assembly forms a complete support module that transfers the driver's foot pressure to the braking system and cooperates with the sensors responsible for the brake light signal and assistance systems. The construction includes:

• a support housing mounted to the vehicle's bulkhead,
• a pedal arm with appropriately selected leverage,
• a connection point with the brake booster and system accessories.

This solution ensures repeatable pedal travel, predictable braking force characteristics, and proper cooperation with the vehicle's safety systems. Stable module mounting limits deflection and unwanted play, which translates to precise brake feel for the driver.

Application in Vehicles with Automatic Transmission

In automatic transmission versions, the brake pedal assembly functions as the primary control element for the braking system, without the presence of a clutch pedal. This allows the design to be optimized for:

• ergonomic pedal positioning relative to the seat and steering wheel,
• adjusted pedal width and travel for driving with one foot on the brake and accelerator,
• cooperation with automatic transmission functions, such as gear selector lock when the brake is applied.

Dedicated design for automatic transmissions minimizes the risk of incorrect system operation when using an inappropriate module from another powertrain version.

Benefits of Using an Original Audi Module

Choosing an original Audi brake pedal assembly allows you to maintain the factory parameters of the braking system's operation and compliance with the manufacturer's service documentation. Key advantages include:

• secure fit to the body's mounting points,
• compatibility with factory sensors and wiring harness,
• maintaining the pedal travel and firmness characteristics intended by the manufacturer.

This makes the service process predictable and reduces the risk of installation or subsequent adjustment issues. This is particularly important in vehicles equipped with advanced safety systems, where the correct operation of the brake pedal directly impacts the electronics.

Condition and Application in Repairs

The offered brake pedal assembly is a used part, making it an attractive solution for post-accident repairs, vehicle reconstruction, or replacement of a damaged module in older Audi models. In many cases, this allows for the restoration of full braking system functionality while maintaining a favorable cost-to-quality ratio.

The module is suitable for both professional workshops specializing in the Audi brand and for knowledgeable users who are independently sourcing parts for pedal area repairs. Original Audi origin facilitates future part identification and selection.

If you are planning a comprehensive repair or upgrade of the brake control area in your Audi and need other parts from the same group, such as levers, covers, or footrests, check the available parts in the Audi Pedals, Pedal Covers, and Footrests category.

For users who are simultaneously servicing comfort systems in their car and want to better plan work on heating and air conditioning, the guide article Air Conditioning and Heating – Part Selection and Maintenance for Year-Round Comfort may be helpful, describing the selection of used OEM components and maintenance schedules.