Audi A4 B8 2.0 TDI CJCB Accelerator Throttle Gas Pedal 8K1721523A

Audi A4 B8 2.0 TDI CJCB Accelerator Throttle Gas Pedal is a component from the Pedals, pedal covers and footrests group, designed for diesel-powered drivetrains. This is a factory Audi solution that ensures precise acceleration control, stable operation across the entire RPM range, and consistency with the vehicle's electronics.

Specifications and technical data

• SKU: 8K1721523A
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K1721523A
• Substitutable numbers: 8K1721523A, 8K1 721 523 A
• Fuel type: Diesel
• Category: Pedal Assemblies, Pads & Parts

Purpose and function in the drivetrain

The accelerator pedal in the Audi A4 B8 2.0 TDI CJCB is responsible for the electronic control of fuel delivery in the diesel engine. In modern Diesel units, the signal from the pedal is processed by the engine control unit, which is why the proper operation of this component has a direct impact on throttle response, acceleration smoothness, and powertrain refinement.

Using an original Audi solution allows for maintaining the correct engine performance characteristics, including:

• repeatable response to pedal input across the entire travel range,
• stable cooperation with the factory ECU software,
• proper fitment for the electrical installation and cabin mounting points.

Benefits of using an original Audi accelerator pedal

In "drive-by-wire" systems, it is crucial to maintain component compatibility with the rest of the system. Using an original Audi accelerator pedal in the version designed for a diesel engine ensures:

• correct interpretation of the pedal position signal by the engine control unit,
• no need for mechanical or electrical adaptation,
• preservation of factory acceleration parameters and cruise control operation (if equipped),
• consistency with safety systems such as traction control or ESP.

As a result, replacing a worn or damaged component with an original equivalent allows for restoring predictable vehicle behavior without interfering with the software.

Performance characteristics and installation

The component comes from a diesel-powered vehicle, which means its operating characteristics are tailored to the specifics of the 2.0 TDI CJCB unit. The accelerator pedal is prepared for installation in the factory location, maintaining original mounting points and electrical connectors, which facilitates service and reduces replacement time.

This type of solution is particularly beneficial when:

• the existing pedal shows delayed response or unstable operation,
• there are errors related to the pedal position signal in the engine control unit,
• replacement of the component is necessary after a collision or interference in the driver's footwell area.

Application in Diesel engine vehicles

In Audi diesel units, precision in fuel delivery control is particularly important, as it affects both dynamics, fuel consumption, and exhaust emissions. The accelerator pedal designed for the Diesel system works with the appropriate ECU algorithm, which allows for maintaining factory injection maps and torque characteristics.

Replacement with the correct component from this group is recommended wherever the priority is to maintain original powertrain performance parameters, without experimenting with unreliable replacements.

Expanding the control zone upgrade

If you are planning a comprehensive repair or upgrade of the control zone in your Audi and need other elements from the same group, such as brake pedals, pedal covers, or driver footrests, check out the available parts in the Audi Pedals, pedal covers and footrests category.

If you are considering a broader upgrade of your car using proven second-hand components and want to better understand how to combine savings with maintaining the quality typical of this brand, check out the article Audi on second-hand parts – tuning and repairs without losing quality, where you will find practical tips on selecting used components.