Audi A7 S7 4G 4.0 TFSI Petrol Engine Turbocharger Cylinder 079145461H

The Audi A7 S7 4G 4.0 TFSI Petrol Engine Turbocharger Actuator is an original turbocharger component from the turbocharger and parts segment, designed for 4.0 TFSI petrol engines in Audi's high-end models. This actuator ensures a factory fit and maintains the proper turbocharger performance characteristics in powerful V8 engines.

Specifications and technical data

• SKU: 079145461H
• Mark: Audi
• Condition: Used
• OEM Part Number: 079145461H
• Substitutable numbers: 079145461H, 079 145 461 H
• Fuel type: Petrol
• Category: Turbos & Parts

Purpose and function of the turbocharger actuator

The turbocharger actuator in the 4.0 TFSI engine is responsible for precisely controlling the turbocharger's regulating elements, which translates into stable boost pressure, smooth torque development, and correct throttle response. In high-performance petrol engines like the 4.0 TFSI in the Audi A7 and S7, a properly functioning actuator is crucial for:

• maintaining the appropriate boost pressure throughout the full rpm range,
• reducing the risk of overloading and related engine controller errors,
• stable operation of the charging system during dynamic driving,
• maintaining the factory performance and operating culture of the 4.0 TFSI unit.

Original origin and fitment to Audi

The actuator presented here comes from Audi's OEM parts group, ensuring factory-standard workmanship and full compatibility with the turbocharger design used in the 4.0 TFSI engine. Its originality is ensured by:

• reliable assembly fit to the supercharging system in the Audi A7 and S7 generation 4G,
• compatibility with factory petrol engine control,
• consistency of operating parameters with other elements of the intake and exhaust systems.

Thanks to this, the actuator can be used as a replacement for a worn-out component without the need to modify the installation or interfere with the controller software.

Technical characteristics and installation benefits

The actuator is designed for use with TFSI petrol engines, where precise turbocharger control directly impacts the engine's performance and operational safety. Using the original component in the turbocharging system allows for:

• restore proper dynamics when accelerating,
• reduce the risk of errors related to improper operation of the turbocharger,
• maintain stable combustion parameters in a gasoline engine,
• retain factory control maps without the need for additional tuning.

This solution is particularly important in powerful 4.0 TFSI engines, where the charging system operates under significant load and requires efficient actuators.

Used condition and assembly aspects

This turbocharger actuator is offered in used condition, allowing for a cost-effective turbocharger repair while maintaining the original manufacturer's specifications. A used OEM component is a good choice when:

• it is important to maintain the factory design of the turbocharger,
• what counts is a favorable cost-to-quality ratio,
• Original fit is preferred over universal replacements.

Before installation, standard workshop verification and installation by a mechanic experienced in supercharging systems in TFSI engines is recommended to facilitate correct adjustment and adaptation to the vehicle.

Audi turbochargers and parts – selection and technical knowledge

If you are looking for other turbochargers and parts for Audi, check out the dedicated turbochargers and parts for Audi category, where you will find a wide selection of turbocharger components tailored to various models of this brand.

When planning a service before the cold weather, it's also worth considering the condition of the turbocharger system, especially in powerful gasoline engines. Practical tips, checklists, and information on selecting used OEM parts can be found in the article "Winter Essentials: Which Used Car Parts Should Be Checked and Replaced Before Freezing?" , which will help you better plan the inspection and maintenance of your Audi.