Audi RS4 B8 EGR Valve Combi Valve Pipe Line Hose Tube Right O/S CFSA 079131166S

Audi RS4 B8 EGR Valve Combi Valve Pipe Line Hose Tube Right O/S CFSA is an original exhaust gas recirculation system component designed for the right side of the engine unit. Thanks to the factory Audi design and precise fitment for the CFSA engine, this valve allows for maintaining stable operating parameters, correct exhaust emission control, and predictable engine performance. This is a solution for users who expect consistency with factory specifications and want to keep the car in a configuration compliant with the manufacturer's requirements.

Specifications and technical data

• SKU: 079131166S
• Mark: Audi
• Condition: Used
• OEM Part Number: 079131166S
• Substitutable numbers: 079131166S, 079 131 166 S
• Location on the vehicle: Right
• Category: EGR Parts & Valves

Technical characteristics and purpose

The presented item belongs to the EGR Valves and Parts category, responsible for controlled exhaust gas recirculation in the engine. The combi valve on the right side works with the engine control system, regulating exhaust flow depending on the load, temperature, and operating conditions of the engine unit. A properly selected component in this area has a direct impact on:

• maintaining correct exhaust emission values,
• engine stability across the entire rev range,
• reducing the risk of diagnostic errors related to the EGR system.

As a part dedicated to the Audi RS4 B8 with the CFSA engine, the valve is structurally prepared to operate under demanding thermal and pressure conditions typical for high-performance units.

Original origin and fitment for Audi

The product comes from the Audi line, which means maintaining the geometry, mounting points, and connection interfaces consistent with the factory design. As a result, installation is predictable, without the need for modifications to the system or adaptation of additional elements. Original manufacturing also promotes:

• proper cooperation with the factory engine control unit software,
• maintaining consistency of operating parameters with other exhaust and intake system components,
• easier diagnostics during future service inspections.

The placement on the vehicle on the right side allows for unambiguous identification of the mounting position, which is important when working with systems with complex architecture, such as in the RS4 B8.

Condition, application, and benefits of installation

The item is offered in used condition, which allows for an economical restoration of the EGR system's efficiency while maintaining the original manufacturer's specification. In many cases, this is a beneficial solution for users who:

• want to restore the factory configuration of the exhaust gas recirculation system,
• are looking for parts with known origin and predictable fitment,
• are planning an EGR system repair without interfering with other engine components.

A properly selected EGR combi valve helps reduce the risk of the engine entering limp mode, improves engine refinement, and facilitates compliance with exhaust emission requirements.

Integration with the EGR system and operation

As an element in the EGR Valves and Parts category, the valve works with other exhaust gas recirculation components, such as pipes, exhaust coolers, or manifolds. A properly functioning EGR system affects:

• stabilization of combustion temperature,
• reduction of nitrogen oxide formation,
• more uniform thermal load on engine components.

In the case of the Audi RS4 B8 with the CFSA engine, it is particularly important to maintain the consistency of all system elements, as this unit operates under a wide range of loads and requires precise control of exhaust gas flow.

System expansion and additional information

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, recirculation pipes, or control elements, check the available parts in the Audi EGR Valves and Parts category.

For users interested in comparing solutions used in different brands and model lines, including sports variants, an article describing the differences between M-series components and standard ones may be helpful – you can find it here: BMW M Performance: how do BMW M components differ from standard ones?.