Mercedes W212 W222 OM642 Diesel EGR Exhaust Cooler Heat Exchanger A6421401175

The Mercedes W212 W222 OM642 EGR Cooler is a component from the Cooling System Hoses and Pipes category, designed for OM642 diesel engines in premium class models. It enables efficient removal and cooling of exhaust gases recirculated by the EGR valve, supporting stable engine operation and reducing thermal load on the system.

Specifications and technical data

• SKU: A6421401175
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6071400400
• Substitutable numbers: A6421401175, A 642 140 11 75
• Fuel type: Diesel
• Category: Coolant Hoses

Application in OM642 Diesel Engines

The EGR cooler in this version has been developed for OM642 Diesel engines used in W212 and W222 body styles. It is responsible for lowering the temperature of exhaust gases directed back to the intake manifold, which helps maintain proper operation of the exhaust gas recirculation system and reduces the risk of overheating adjacent components.

Thanks to its appropriately designed flow channels and compatibility with the factory cooling system, this component integrates with the existing setup without requiring structural modifications. This solution is particularly important in premium vehicles where both durability and predictable system behavior over the long term are crucial.

Benefits of Using an Original EGR Cooler

Choosing an EGR cooler specifically designed for OM642 units offers a range of practical benefits for the vehicle owner:

• Stable operating temperature – efficient cooling of recirculated exhaust gases limits temperature fluctuations in the intake system.
• Better integration with the cooling system – the component is part of the cooling system hoses and pipes, ensuring consistent coolant flow.
• Reduced thermal load on components adjacent to the EGR system, contributing to their longer lifespan.
• Lowered risk of failures related to exhaust gas overheating in the intake manifold area.

For the user, this translates to more predictable operation, a reduced risk of costly repairs, and maintained proper performance of the diesel engine in daily use.

Product Characteristics and Mounting Fitment

The presented EGR cooler is designed for installation in factory mounting points, simplifying service work and reducing replacement time. Its construction is engineered to work with original cooling system hoses and pipes, eliminating the need for additional adapters or modifications.

The product comes from the Mercedes range, ensuring compliance with the brand's original design standards. Its used condition allows for an economical restoration of the EGR system's functionality while maintaining proper fitment for the specific engine and body configuration.

Condition, Verification, and Service Application

The component is offered as a used part, making it an attractive solution for repairing vehicles used intensively or with higher mileage. Such components are particularly useful in situations where the existing EGR cooler has developed a leak, become clogged, or suffered mechanical damage, and the priority is to restore proper operation of the cooling and exhaust gas recirculation system at a reasonable cost.

Replacing the EGR cooler is recommended, among other things, for symptoms such as excessive smoke, power loss, EGR system errors, or elevated engine operating temperatures. Using the correct component effectively eliminates these problems, provided that other system components are functional.

Technical Support and Additional Materials

If you are interested in other Mercedes Cooling System Hoses and Pipes, check out the Mercedes cooling system hoses and pipes available in our store to select complementary elements for your cooling system.

You can find more practical information on diagnosing and operating cooling systems in the article Engine Cooling System – Overheating, Repair, and Used Coolers, which discusses the impact of efficient cooling on engine durability and provides examples of solutions used in popular models.