EGR Pipe Mercedes W164 W204 W212 OM642 Valve Line Diesel Engine A6421400208

The Mercedes W164 W204 W212 OM642 EGR Pipe is an original exhaust gas recirculation component designed for Mercedes diesel engines. With its factory geometry and precise fit for the OM642 engine, it ensures stable exhaust gas flow between the EGR valve and the manifold, contributing to proper engine operation and reduced emissions. This is a practical solution for users looking to restore correct EGR system functionality without experimenting with aftermarket alternatives.

Specifications and technical data

• SKU: A6421400208
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6421400208
• Substitutable numbers: A6421400208, A 642 140 02 08
• Fuel type: Diesel
• Category: EGR Parts & Valves

Purpose and Function in the EGR System

The EGR pipe for Mercedes with OM642 diesel engine is responsible for transporting exhaust gases back into the intake system, as per the recirculation system's design. A correctly selected component in this section is crucial for:

• maintaining stable combustion parameters in the diesel engine,
• reducing emissions of nitrogen oxides and particulate matter,
• compatibility with the factory engine control unit software,
• maintaining compliance with the engine's original configuration.

By retaining its original construction, the pipe interacts with other EGR system components in a predictable manner, consistent with the manufacturer's specifications.

Benefits of Using an Original EGR Pipe

Using an original pipe from the EGR Valves and Parts category helps minimize the risk of leaks, improper exhaust gas routing, or installation issues. In practice, this means:

• a secure fit for the OM642 engine found in W164, W204, and W212 models,
• maintaining the correct exhaust gas path within the engine bay,
• easier EGR system diagnostics after component replacement,
• a lower risk of encountering errors related to exhaust gas recirculation.

This solution is particularly beneficial for servicing diesel engines where the EGR system significantly impacts running smoothness, fuel consumption, and compliance with emission standards.

Component Condition and Installation Aspects

The offered EGR pipe is in used condition, allowing for an economical repair while maintaining the original manufacturer's specifications. This type of component, when properly installed, can effectively restore correct exhaust gas circulation within the recirculation system, provided that other components (EGR valve, vacuum lines, manifold) are in good working order.

Before installation, it is recommended to perform a standard inspection of the mating surfaces, sealing areas, and to tighten connections correctly according to the service procedures for the specific Mercedes model. Proper seating of the pipe minimizes the risk of exhaust leaks and subsequent diagnostic problems.

Part Selection by Numbers and Technical Support

To ensure that the selected EGR pipe is suitable for your specific diesel engine version and body type, it is advisable to verify compatibility using part numbers and vehicle data. This practical step helps avoid installation and fitment issues with the existing intake system configuration.

If you wish to learn more about which vehicle components require the most frequent replacement and how to plan maintenance cost-effectively, check out the guide TOP 10 Most Frequently Replaced Parts in Your Car. Additionally, when selecting parts by OEM numbers, a practical guide on verifying part compatibility, available here, may be useful: Risk-Free Online Parts Shopping – Verifying Components by OEM Numbers.

Related Mercedes EGR System Components

If you are planning a comprehensive repair or engine area upgrade for your Mercedes and require other parts from the same group, such as EGR valves, exhaust gas recirculation pipes, or additional pipe sections, explore the available parts in the Mercedes EGR Valves and Parts category.