Mercedes W220 S55 AMG Air Pump EGR Valve Left N/S Petrol M112 M113 A0021403560

Mercedes W220 S55 AMG Air Pump EGR Valve Left N/S Petrol M112 M113 is an original component from the EGR Valves and Parts group, designed for petrol systems in high-performance engine versions. The factory design ensures proper operating parameters for the power unit, stable exhaust gas recirculation, and predictable engine behavior during daily operation.

Specifications and technical data

• SKU: A0021403560
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0021403560
• Substitutable numbers: A0021403560, A 002 140 35 60
• Location on the vehicle: Left
• Fuel type: Petrol
• Part type: EGR Valve
• Category: EGR Parts & Valves

Purpose and function in the EGR system

The presented air pump EGR valve is dedicated to M112 and M113 series petrol units in the luxury class model, which translates into a perfect fit for the operating characteristics of a higher-output engine. The component is responsible for controlled exhaust gas recirculation, supporting stable engine operation, emission reduction, and the correct functioning of the engine control system. Thanks to the factory geometry and appropriately selected flow cross-sections, the valve works in harmony with the original control system, which minimizes the risk of diagnostic errors and improper operation of the fuel supply system. This solution is particularly important in S-Class vehicles, where smooth power delivery and predictable load response are essential.

Vehicle placement and petrol configuration

The component is designed for installation on the left side of the vehicle, which is important when planning a replacement in an engine bay with limited space. Clearly defined placement facilitates the identification of the correct component during inspection or repair and helps avoid mistakes when selecting parts. Adaptation to the petrol system ensures compatibility with the combustion characteristics and operating temperatures typical for engines of this type. As a result, the valve maintains proper sealing and durability under conditions specified by the manufacturer, and the exhaust gas recirculation system remains consistent with the factory engine controller calibration.

Benefits of using an original used component

In the case of older premium cars, using an original, used component from the same model line is often a more predictable solution than installing a random replacement. The factory part maintains structural compatibility with other system components, which promotes stable engine operation and limits the risk of adaptation problems. If you are considering the choice between a new replacement and a verified part from dismantling, it is worth reading the analysis in the article The myth of the ideal new part: why is a used factory part the only reasonable choice for older cars?, where practical aspects of operating older premium segment cars are discussed. Additionally, when making a purchasing decision, it may be helpful to compare different solutions in terms of costs and durability, available in the material Car parts – new or used? We compare costs, quality, and durability, which organizes the most important criteria for selecting components.

Support with selection and expansion of the EGR system

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional valves, vacuum lines, or exhaust gas recirculation control elements, check the available parts in the Mercedes EGR Valves and Parts category. Selecting components from one functional group allows for system consistency, facilitates diagnostics, and reduces the risk of incompatibility between individual elements. In the case of advanced petrol units, such as those used in the S55 AMG version, consistent use of matched parts has a direct impact on engine refinement and load response predictability.

Summary

Mercedes W220 S55 AMG Air Pump EGR Valve Left N/S Petrol M112 M113 is a factory exhaust gas recirculation system component, designed with the specifics of this series of petrol engines in mind. Proper placement on the left side of the vehicle, compatibility with the original configuration, and membership in the EGR Valves and Parts group make it a rational choice for servicing the EGR system in this model.