Audi A4 B8 VW Scirocco Mk3 Throttle Body Valve 2.0 TDI 03L128063AF

Audi A4 B8 VW Scirocco Mk3 Throttle Body 2.0 TDI is a component from the Throttle Bodies category, designed for Diesel engines in popular VAG group models. A used OEM part ensures factory fit to the intake system, stable engine operation, and predictable behavior during acceleration and engine braking. This is a solution for users seeking a technically proven component instead of random aftermarket alternatives.

Specifications and technical data

• SKU: 03L128063AF
• Mark: Audi
• Condition: Used
• OEM Part Number: 03L128063AF
• Substitutable numbers: 03L128063AF, 03L 128 063 AF, A2C53245205
• Fuel type: Diesel
• Part type: Throttle Body
• Category: Throttle Bodies

Purpose and Role of the Throttle Body in a 2.0 TDI Engine

The throttle body in a 2.0 TDI Diesel engine is responsible for precise control of airflow in the intake manifold, working in conjunction with the engine control system and the exhaust gas recirculation system. In vehicles such as the Audi A4 B8 and VW Scirocco Mk3, its proper functioning affects:

• stable idle speed and smooth deceleration,
• proper engine shutdown without jerking,
• effective cooperation with the EGR system,
• maintaining appropriate combustion parameters in urban and highway driving.

Thanks to its factory design, the throttle body maintains compatibility with the engine control unit maps, which reduces the risk of diagnostic errors and unwanted dashboard messages.

Advantages of Using an Original Audi Throttle Body

Choosing an original Audi throttle body for a 2.0 TDI unit is a solution that technically surpasses many aftermarket alternatives. Key benefits include:

• Factory Fit to the intake manifold and engine accessories in the Audi A4 B8 and VW Scirocco Mk3,
• maintaining original engine operating characteristics, without the need for software modifications,
• correct cooperation with sensors and actuators in the control system,
• reduced risk of intake leaks due to compatible body geometry.

A used OEM throttle body allows for maintaining the integrity of the entire intake system, which is particularly important in modern diesel engines, sensitive to deviations in operating parameters.

Compatibility with Diesel Engines and Control Systems

The presented throttle body is designed for engines powered by Diesel fuel, where airflow is controlled electronically. This means the component works with:

• the electronic engine control unit responsible for fuel injection quantity and timing,
• the exhaust gas recirculation system, which requires controlled vacuum and airflow,
• emission control systems, where stable airflow is crucial for proper operation.

This combination allows for maintaining predictable throttle response, which translates to user comfort in daily driving.

Condition, Verification, and Service Application

The throttle body is offered as a used part, which is a cost-effective solution while maintaining factory specifications. This type of component is particularly recommended in situations where:

• errors related to throttle position or disturbed airflow occur,
• there are problems with engine stalling or rough idling,
• replacement of the component is necessary after mechanical damage or mechanism seizure.

Using an original throttle body in place of a worn-out component allows for restoring correct engine operating parameters without interfering with the electrical system or control system.

Audi Intake System Expansion – Audi Throttle Bodies

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

If you are interested in a broader approach to powertrain system repairs and want to learn why original used components are often a better choice than random aftermarket alternatives, read the article Whining differential? Find out why a used OEM drive axle is a better investment than an uncertain replacement, which demonstrates the practical advantages of using OEM parts in everyday vehicles.