Audi A4 B8 A5 8T Throttle Body Valve Flap 2.0TDI Diesel 03L128063E

Audi A4 B8 A5 8T Throttle Body Valve Flap 2.0TDI Diesel is an intake system component designed for 2.0 TDI diesel engines, responsible for precise airflow control and stable engine operation. Thanks to the factory Audi design and perfect fit for the specific generation of A4 B8 and A5 8T models, this diesel throttle body allows for maintaining proper operating parameters, reducing vibrations, and ensuring correct cooperation with the control electronics. It is a practical solution when replacing a worn-out component in a professional workshop or during an advanced intake system repair.

Specifications and technical data

• SKU: 03L128063E
• Mark: Audi
• Condition: Used
• OEM Part Number: 03L128063E
• Substitutable numbers: 03L128063E, 03L 128 063 E, 03L128063D, 03L 128 063 D
• Fuel type: Diesel
• Category: Throttle Bodies

Function and role of the throttle body in the 2.0 TDI engine

The throttle body in a diesel engine plays a key role in controlling the amount of air supplied to the intake manifold and in the engine shutdown process. In 2.0 TDI units used in the Audi A4 B8 and A5 8T, it is responsible for, among other things:

• stabilizing idle speed and smooth engine shutdown,
• cooperation with the Exhaust Gas Recirculation (EGR) system to reduce emissions,
• maintaining proper vacuum in the intake manifold,
• interacting with control electronics in emergency and protection modes.

A well-chosen throttle body ensures a predictable engine response to load changes and improves the refinement of the diesel engine.

Compatibility with Audi diesel engines

The offered throttle body is designed for Diesel fuel systems, meaning it is adapted to the operating characteristics of Audi diesel engines. The component's design is integrated with the engine control system used in the A4 B8 and A5 8T, which enables:

• proper communication with the engine control module,
• preservation of factory airflow control maps,
• proper fitment to the intake system and diesel accessories.

Such compatibility reduces the risk of diagnostic errors and facilitates adaptation after installation in the vehicle.

Component characteristics and service application

The throttle body from this offer belongs to the Throttle Bodies category, meaning it is a specialized intake system component, not a universal replacement. It works well both for standard replacement of a worn part and for more extensive service work related to the intake system, EGR, or engine accessory upgrades. The product is offered in Used condition, which allows for economical repair while maintaining the original design and geometry of the component.

Benefits of using an original Audi throttle body

Using a throttle body dedicated to the Audi A4 B8 and A5 8T 2.0 TDI brings a number of practical benefits in daily operation:

• maintaining factory diesel engine operating parameters,
• proper cooperation with the EGR system and control electronics,
• reducing issues with rough idling and jerking when shutting down the engine,
• easier computer diagnostics due to compatibility with Audi software.

For workshops specializing in the Audi brand, this is a solution that facilitates maintaining the consistency of the entire intake system and minimizes the risk of incompatibility with other components.

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as throttle bodies, actuators, or airflow control components, check out the available parts in the Audi Throttle Bodies category.

Additional information and technical support

When selecting a throttle body for a specific 2.0 TDI engine version, it is worth paying attention to compatibility with the ECU software and accessory configuration. If necessary, technical materials and comparisons of solutions used in different versions of Audi models, including RS sports variants, may be helpful. To better understand the design differences in power units and accessories, it is worth reading the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the specifics of engines, brakes, and chassis in the Audi range.