Volkswagen Polo 6R Audi A3 8V Turbocharger Actuator 1.2 TSI 04E145725AB

The Volkswagen Polo 6R Audi A3 8V 1.2 TSI Turbocharger Actuator is an original Volkswagen Group turbocharger component designed for 1.2 TSI petrol engines. This actuator ensures factory fitment to the turbocharger and correct boost pressure regulation, which translates into stable engine operation and maintenance of its performance parameters.

Specifications and technical data

• SKU: 04E145722E-1
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 04E145722E
• Substitutable numbers: 04E145722E, 04E 145 722 E, 04E198725C, 04E 198 725 C, 04E145725AB, 04E 145 725 AB
• Fuel type: Petrol
• Category: Turbos & Parts

Purpose and application

This turbocharger actuator for the Volkswagen Polo 6R and Audi A3 8V falls into the turbocharger and parts category, meaning it's an integral component of the turbocharger geometry control or wastegate. It was designed for TSI petrol engines, where precise control of boost pressure is crucial for performance, refinement, and fuel economy.

Thanks to its design in line with manufacturer standards, the actuator works with the vehicle's factory electronics, enabling correct regulation of the turbocharger's operation across the full range of loads and rotational speeds.

Construction and technical characteristics

The actuator is the executive element of the turbocharging system, responsible for controlling the position of the mechanism within the turbocharger. In practice, this translates into:

• control of the boost pressure depending on the engine load,
• maintaining appropriate dynamics at low and high revs,
• reducing the risk of overloading and related engine controller errors.

As an original Volkswagen component, the actuator retains the correct mounting points and operating geometry, which facilitates installation and ensures compatibility with the factory turbocharger used in 1.2 TSI petrol engines.

Condition, origin and benefits of choosing a used part

The 1.2 TSI turbocharger actuator offered is a used part, sourced from a disassembly. These types of components are often chosen by users who want:

• maintain original OEM quality at a lower cost than a new part,
• maintain full compliance with the vehicle's factory configuration,
• minimize the risk of assembly problems typical of substitutes of uncertain origin.

Used condition means the component shows signs of wear but retains the functionality required for continued operation in the supercharger system. This is a sensible choice for repairs where combining original workmanship with controlled service costs is key.

Why is it worth choosing the original turbocharger actuator?

In supercharged gasoline engines, stable turbocharger operation directly impacts engine performance, fuel consumption, and durability. When choosing an original actuator:

• you maintain proper cooperation with the factory engine controller,
• you reduce the risk of errors related to incorrect boost pressure,
• you ensure predictable vehicle behavior throughout the entire rev range.

This is particularly important in modern TSI units, where the charging system is precisely tuned to the vehicle electronics, and the quality of the actuators translates into driving comfort and operational safety.

Other turbochargers and parts for Volkswagen

If you're also looking for other turbochargers and parts for Volkswagen, check out our dedicated offer: turbochargers and parts for Volkswagen . This allows you to easily select compatible turbocharger components in one place.

More about the advantages of original used parts

When choosing used parts, it's worth understanding the broader context of using premium original components. Our guide describes how used components can help maintain a high standard of fitment at reasonable service costs: Used Mercedes Parts – Original Used Parts . Although it covers a different brand, it demonstrates a practical approach to selecting quality used parts.