Mercedes SLC 43 R172 AMG Petrol M276 Exhaust Flap Actuator Right Left N/O/S

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes SLC 43 R172 AMG Petrol M276 Exhaust Flap Actuator Right Left N/O/S is a specialized exhaust system component designed for precise control of the exhaust flaps in the sporty AMG version. This component works with the petrol engine, ensuring proper flap operation on both sides of the vehicle as well as stable acoustic and flow parameters. By maintaining the factory design concept, it represents a solution tailored to the characteristics of the M276 engine and the dynamic exhaust system of the SLC 43.

Specifications and technical data

• SKU: A1909064500-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1909064500
• Substitutable numbers: A1909064500, A 190 906 45 00
• Location on the vehicle: Right, Left
• Fuel type: Petrol
• Category: Other Exhaust & Emission Parts

Purpose and function in the exhaust system

The exhaust flap actuator is responsible for controlling the position of the flaps in the mufflers or sections of the exhaust system, which affects exhaust gas flow and sound characteristics. In the SLC 43 AMG model, it works with the vehicle's electronics, allowing for changes in exhaust operating modes depending on the load, selected drive program, and road conditions. The use of a dedicated actuator for the petrol engine version allows for maintaining the correct backpressure and stable operation of the power unit.

Vehicle placement and configuration

The presented element is adapted for installation on both the right and left sides of the vehicle, which allows for the support of both branches of the exhaust system in the configuration intended for the AMG version. This design facilitates servicing – it is possible to replace a single actuator or service the pair, depending on the condition of the system. This solution promotes consistent flap operation on both sides, which is important for both performance and uniform exhaust sound.

Compatibility with the M276 petrol engine

The actuator has been designed to work with the exhaust system of a vehicle equipped with an M276 family petrol engine. This means it is matched to the thermal and flow characteristics of this unit, as well as the control logic used in AMG versions. Using the correct component in combination with the factory electronics allows for maintaining the operating parameters intended by the manufacturer, without the need for modifications to the installation or adaptation of universal elements.

Characteristics of the used product

The offered actuator comes from dismantling, which allows for an economical restoration of the exhaust system's efficiency while maintaining the original specification. A used component of this type is particularly attractive for repairs where matching the specific model version and maintaining the factory way the flaps operate is crucial. Choosing an original element from the secondary market reduces the risk of compatibility issues and facilitates installation in place of the existing sub-assembly.

Support with selection and knowledge expansion

If you are planning a comprehensive repair or modernization of the exhaust system area in your Mercedes and need other elements from the same group, such as additional actuators, mounts, or control elements, check the available parts in the Other Mercedes category.

For a comparison of solutions used in sports versions of other brands, including differences in engine, brake, and chassis construction, it is worth reading the material discussing RS models – you will find it in the article Audi RS vs other models – what is hidden under the hood and chassis?.

If you are considering using components from the secondary market on a wider scale, a guide explaining the most common doubts related to such elements may be helpful – you will find more information in the text Used car parts: Myths and facts you need to know.