EGR Cooler Mercedes W205 W212 W213 M274 Exhaust Gas Cooling Unit A2741420379

EGR Cooler Mercedes W205 W212 W213 M274 Exhaust Gas Cooling Unit is an original exhaust gas recirculation component designed for M274 engines in Mercedes C-Class and E-Class models. Thanks to its factory design, it ensures stable exhaust gas cooling, which promotes proper EGR valve operation and maintains optimal emission parameters. This is a solution for users who expect consistent cooperation with factory engine equipment and want to maintain compliance with the manufacturer's requirements.

Specifications and technical data

• SKU: A2741420379
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2741420379
• Substitutable numbers: A2741420379, A 274 142 03 79
• Category: EGR Parts & Valves

Purpose and role in the EGR system

The exhaust gas cooler in the M274 engine is responsible for lowering the temperature of the exhaust gases directed to the recirculation system, which supports stable engine operation and reduces the formation of nitrogen oxides. For Mercedes W205, Mercedes W212, and Mercedes W213 models, a properly functioning EGR cooler is essential for maintaining engine performance, correct ECU control strategies, and compliance with exhaust emission standards.

This component belongs to the EGR valves and parts category, so its technical condition has a direct impact on the service life of the EGR valve, intake manifold, and the cleanliness of the intake ducts. Replacing a worn cooler with a functional component helps reduce the risk of exhaust gas overheating in the recirculation circuit and associated diagnostic errors.

Design and compatibility with the M274 unit

The EGR cooler in this configuration is structurally matched to the M274 engine, which facilitates installation in the engine bay without the need for system modifications. Properly designed connection ports and body shape allow for correct integration into the exhaust and cooling systems, while maintaining factory mounting points.

By using an original Mercedes solution, the correct flow channel cross-sections and heat exchanger geometry are preserved, which promotes uniform exhaust cooling and stable operation of the entire system. This is particularly important in modern turbocharged units, where the thermal load on EGR components is high.

Condition, verification, and service application

The offered exhaust gas cooler comes from the used parts segment, which allows for economical EGR system repair while maintaining the original manufacturer's specifications. This type of component is often chosen when symptoms such as power loss, exhaust recirculation errors, or excessive smoke appear, and diagnostics indicate restricted flow or a leak in the heat exchanger.

Before installation, a standard service procedure is recommended: leak testing, verification of channel cleanliness, and checking for proper cooperation with the EGR valve and cooling system. A properly selected and functional EGR cooler helps maintain stable engine operating parameters and reduces the risk of recurring faults in the exhaust recirculation area.

Benefits of using an original EGR cooler

• Factory fitment for the M274 unit in Mercedes W205, W212, and W213 models.
• Consistent cooperation with the engine control system and EGR valve.
• Reduction of the risk of exhaust gas overheating in the recirculation circuit.
• Support for maintaining exhaust emission parameters at the levels intended by the manufacturer.
• Economical service solution through the use of aftermarket parts.

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 exhaust gas coolers, recirculation valves, or hoses related to the recirculation system, check the available parts in the Mercedes EGR valves and parts category.

Technical support and service knowledge

When working on steering systems, columns, or power steering components, it is worth using reliable sources of knowledge. A detailed discussion of the construction, operation, and typical faults can be found in the article Steering system and power steering – how does it work and what breaks?, which may be helpful when planning broader service work on the vehicle.

For users interested in making informed choices regarding aftermarket parts and optimizing operating costs while reducing environmental impact, we also recommend the material Circular economy in your garage – how choosing used parts from dismantling really supports environmental protection and your wallet?, which describes the practical aspects of using used components in modern cars.