Audi A5 S5 8T 4.2 V8 FSI CAUA Secondary Air Kombi Valve Right O/S 079131102A

Audi A5 S5 8T 4.2 V8 FSI CAUA Secondary Air Kombi Valve Right O/S is an original air supply system component designed for operation on the right side of the engine unit. This component supports the proper functioning of the V8 FSI engine, ensuring stable operating parameters and compliance with the factory configuration of the Audi brand. This used OEM component is a reasonable choice for servicing advanced gasoline engines when structural fit and predictable performance are essential.

Specifications and technical data

• SKU: 079131102A
• Mark: Audi
• Condition: Used
• OEM Part Number: 079131102A
• Substitutable numbers: 079131102A, 079 131 102 A
• Location on the vehicle: Right
• Category: Other Air & Fuel Delivery

Purpose and technical function

The Secondary Air Kombi Valve Right operates within the intake and exhaust system, supporting the air delivery process during specific engine operating phases. A properly functioning valve helps maintain optimal combustion conditions, which translates into stable operation of the 4.2 V8 FSI unit and correct interaction with the control electronics.

The positioning on the right side of the vehicle is important from a service perspective – the component is designed for the specific spatial layout of the engine bay, ensuring that proper hose routing, mountings, and airflow geometry are maintained.

Compatibility with the 4.2 V8 FSI CAUA unit

The presented component is dedicated for use in Audi A5 and S5 8T generation models with the 4.2 V8 FSI engine, code CAUA. This means that the valve's design, its connections, and control method are adapted to the specific requirements of this engine unit, including airflow characteristics and thermal conditions in the engine bay.

By maintaining factory geometry and operating parameters, the valve allows for consistency with the original engine control unit software, which is particularly important in high-performance V8 units where any deviation from specifications can result in diagnostic errors or a drop in performance.

Benefits of using an original used component

Choosing a used, original secondary air valve for the Audi A5 / S5 8T is a solution that allows you to balance cost control with maintaining the factory system concept. In practice, this means:

• maintaining the original design and fit for the 4.2 V8 FSI unit,
• consistency with factory mounting points and installation in the engine bay,
• reducing the risk of compatibility issues compared to non-OE replacements.

This approach is particularly important in higher-power vehicles, where the secondary air system works with an extensive engine control system, and each element has a precise, assigned role.

Installation area and service aspects

The valve is designed for installation on the right side of the vehicle, which should be taken into account when planning service work. Proper placement is significant for:

• correct routing of hoses and connectors,
• maintaining appropriate distance from heat-generating components,
• easier diagnostics and potential future replacement.

During installation, it is recommended to follow service procedures in accordance with the manufacturer's guidelines to ensure system tightness and proper cooperation with other components of the secondary air system.

Expansion of the system in Audi vehicles

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 additional valves, air hoses, or control elements, check the available parts in the Other Audi category.

For users interested in a broader technical context of high-performance models, including differences in engine, brake, and chassis construction, the article comparing sports versions with standard variants may be helpful: Audi RS vs other models – what is hidden under the hood and chassis?.