Mercedes ML W164 OM642 Exhaust Gas Recirculation EGR Valve A6421400360

Mercedes W164 OM642 Exhaust Gas Recirculation EGR Valve A6421400360 is an original part from the EGR Valves and Parts group, designed for the exhaust gas recirculation system in Mercedes OM642 diesel engines. It enables proper control of exhaust gas flow in the front part of the engine compartment, supporting stable engine operation and emission control.

Specifications and technical data

• SKU: A6421400360
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6421400360
• Substitutable numbers: A6421400360, A 642 140 03 60, A6421400860, A 642 140 08 60
• Location on the vehicle: Front
• Category: EGR Parts & Valves

Purpose and Technical Function

The presented EGR valve is a component of the system responsible for the controlled return of a portion of exhaust gases to the intake manifold. This allows the OM642 engine to operate under optimized temperature conditions, which helps reduce nitrogen oxide emissions and stabilize the combustion process. Its location in the front of the vehicle facilitates service access and allows for efficient replacement as part of standard maintenance work.

As a part from the EGR Valves and Parts group, this component works with other elements of the intake and engine control system, ensuring the cohesive operation of the entire exhaust gas recirculation system.

Benefits of Using an Original EGR Valve

Using an original exhaust gas recirculation valve in a Mercedes W164 with an OM642 engine allows for the preservation of the engine's original operating parameters. Appropriately selected channel geometry, correct flow characteristics, and compatibility with the engine control unit software translate into:

• stable idle and partial load operation,
• more predictable throttle response,
• maintenance of compliance with factory exhaust emission standards,
• reduced risk of EGR system-related errors in the control unit memory.

A used OEM part is an attractive alternative to new replacements, especially in vehicles used intensively, where a reasonable balance between repair cost and maintaining correct engine operating parameters is important.

Vehicle Placement and Installation Aspects

The EGR valve is designed for installation in the front part of the vehicle, in the engine compartment area. This placement facilitates convenient access during diagnostics and replacement, which can reduce service time. When selecting a part, it is crucial to ensure it matches the specific version of the OM642 engine and is compatible with the control system used in the particular Mercedes W164 model.

Before installation, it is recommended to perform a standard diagnostic procedure for the intake and exhaust gas recirculation system, and after replacement, to adapt parameters in the engine control unit, if required for the specific vehicle model.

Practical Application of a Used EGR Valve

Choosing a used exhaust gas recirculation valve is a commonly used solution in professional workshops specializing in Mercedes vehicle service. It allows for reduced repair costs while maintaining the original component design, which is particularly important in more modern diesel engines that are sensitive to the quality of EGR system components.

If you want to better understand the principle of operation of the exhaust gas recirculation system and learn when the purchase of a used valve is technically justified, it is worth reading the article EGR: What it is and why considering used EGR valves is worthwhile, which discusses in detail the function of the EGR system and the practical aspects of its servicing.

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 parts from the same group, such as additional valves, hoses, or mounting elements, check the available parts in the Mercedes EGR Valves and Parts category.