Audi R8 42 RS4 B8 Combination Combi EGR Valve Left Right N/O/S CFSA 07L131101M

Audi R8 42 RS4 B8 Combination Combi EGR Valve Left Right N/O/S CFSA is an original exhaust gas recirculation system component designed for installation on either the left or right side of the engine in selected Audi models. Thanks to its factory design, it ensures consistency with the stock engine architecture, which facilitates maintenance and helps maintain stable operating parameters for the CFSA unit.

Specifications and technical data

• SKU: 07L131101M
• Mark: Audi
• Condition: Used
• OEM Part Number: 07L131101M
• Substitutable numbers: 07L131101M, 07L 131 101 M, 07L 131 101 N, 07L131101N
• Location on the vehicle: Right, Left
• Category: Other Air & Fuel Delivery

Purpose and function of the EGR valve

The EGR valve in the Audi R8 42 and RS4 B8 is responsible for the controlled recirculation of exhaust gases into the intake system, which helps reduce nitrogen oxide emissions and stabilizes the combustion process. A properly functioning component in this area is particularly important in high-performance gasoline engines, where precision in mixture control has a direct impact on engine refinement and durability.

The presented component is adapted for installation on both the right and left sides, allowing it to be matched to the specific configuration of the exhaust and intake system in a given vehicle. This design facilitates service operations and reduces the number of different part variants for the car.

Construction and fitment for Audi R8 42 and RS4 B8

The element has been designed to meet the requirements of Audi R8 42 and RS4 B8 models with the CFSA engine, ensuring it retains factory mounting points and the correct exhaust flow geometry. Original fitment translates into proper positioning relative to manifolds and lines, which minimizes the risk of leaks and improper mechanical stress.

The exhaust gas recirculation system in these models operates under demanding thermal conditions, which is why the valve construction is prepared for high temperatures and variable loads. Using the correct component to replace a worn or damaged one allows for the restoration of proper exhaust gas control without the need for ECU software intervention.

Condition, service application, and benefits of replacement

The offered EGR valve is a part from the Other category, meaning it is a specialized engine system component often overlooked during standard inspections, yet crucial for resolving issues with rough engine operation, power loss, or error codes related to exhaust gas recirculation. Replacing it with a functional component allows you to:

• stabilize engine operation in the low and mid-RPM range,
• reduce the risk of the engine entering limp mode due to EGR errors,
• maintain compliance with factory emission settings.

The used condition of the part makes it a cost-effective solution while maintaining the manufacturer's original specifications. It is a good choice for repairs where both technical compliance and a reasonable service budget are important.

Installation and operational tips

When selecting an EGR valve for an Audi R8 42 or RS4 B8 with a CFSA engine, it is worth paying attention to compatibility with the vehicle configuration and the placement on the vehicle (right/left side). Installation by a workshop experienced with high-performance Audi units is recommended, which will allow for the proper execution of:

• removal of the old component while maintaining system tightness,
• inspection of the condition of lines and seals in the EGR area,
• adaptation and verification of valve operation after installation using diagnostics.

After replacement, it is worth monitoring engine operating parameters and any potential error codes to confirm that exhaust gas recirculation is functioning within the range specified by the manufacturer. A properly selected and installed valve supports long-term, stable operation of the powertrain.

System expansion and additional information

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other parts from the same group, such as additional valves, lines, or control elements, check out the available parts in the Other Audi category.

For a better understanding of the specifics of Audi's high-performance engines and the differences between stock and sport versions, it is worth reading an article describing the construction of engines, brakes, and chassis in RS models – details can be found in the material Audi RS vs other models – what is hidden under the hood and chassis?.