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

Mercedes W205 W212 W213 EGR Cooler Exhaust Gas Cooling Unit M274 is an original exhaust gas recirculation system component from the EGR Valves and Parts group, designed for Mercedes M274 engine units. It is responsible for stabilizing the temperature of exhaust gases directed to the EGR valve, which promotes efficient engine operation and reduces emissions. This is a solution for users who want to restore the proper functioning of the EGR system while maintaining factory performance characteristics.

Specifications and technical data

• SKU: A2741420379-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2741420379
• Substitutable numbers: A2741420379, A 274 142 03 79
• Part type: EGR Cooler
• Category: EGR Parts & Valves

Function and role of the EGR cooler

The EGR cooler in the M274 engine is responsible for lowering the temperature of exhaust gases directed back to the intake manifold. This allows the exhaust gas recirculation system to operate under stable thermal conditions, which translates into:

• more uniform combustion of the mixture in the cylinders,
• reduction of nitrogen oxide (NOx) emissions,
• relief for other EGR system components, including the valve and hoses. A functional EGR cooler helps reduce the risk of exhaust gas overheating in the intake area, which is important for both engine durability and compliance with emission standards.

Benefits of using an original Mercedes component

The original EGR cooler dedicated to M274 units has been designed for specific flow geometry and operating conditions in Mercedes W205, W212, and W213 models. This ensures:

• precise fitment to the exhaust and intake system without modifications,
• maintenance of factory exhaust flow parameters and cooling efficiency,
• consistency with the factory engine control unit calibration. By using an original component from the EGR Valves and Parts group, you minimize the risk of leaks, improper installation, and diagnostic errors related to incorrect flow characteristics.

Part selection by OEM and compatibility

When selecting an EGR cooler for a Mercedes, it is crucial to match it to the specific M274 engine version and body generation (W205, W212, W213). In practice, this means it is necessary to verify the manufacturer's markings and compare the design with the part being removed. Proper selection of the component allows you to avoid problems with installation, incorrect routing of exhaust pipes, or differences in connections. If you want to learn more about selecting used OEM components by manufacturer numbers and VIN, as well as practical tips on working with original parts, the following article will be helpful: Audi five-cylinder engine – a legend from Quattro to RS3 and how to maintain it with original Audi parts. Although it describes Audi units, you will find universal principles for the selection and verification of used OEM parts there.

Product characteristics and service application

The presented EGR cooler is a dismantled part, which makes it an attractive service solution for users looking for a factory component at a reasonable price. This type of part is particularly suitable in situations where:

• the EGR system generates errors related to exhaust gas temperature or flow,
• there are leaks in the exhaust cooling area,
• it is necessary to replace the complete exhaust cooling module instead of performing temporary repairs. Using an original EGR cooler allows you to restore the correct operating conditions of the recirculation system, which promotes stable engine operation and reduces the risk of secondary faults in the intake and exhaust area.

Expanding the EGR system in a Mercedes

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 exhaust cooling modules, recirculation hoses, or flow control elements, check the available parts in the Mercedes EGR Valves and Parts category.