EGR Valve Mercedes W204 W212 Diesel OM651 Exhaust Gas Valve A6511420467

EGR Valve Mercedes W204 W212 Diesel OM651 Exhaust Gas Valve is a component from the EGR valves and parts category, designed for diesel systems in popular Mercedes mid-size models. It is responsible for the controlled circulation of exhaust gases in the OM651 engine, supporting stable engine operation and the proper functioning of the emission reduction system.

Specifications and technical data

• SKU: A6511420467
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6511420467
• Substitutable numbers: A6511420467, A 651 142 04 67
• Fuel type: Diesel
• Category: EGR Parts & Valves

Purpose and function in the EGR system

The presented exhaust gas recirculation valve is dedicated to Diesel OM651 engines used in Mercedes W204 and W212 models. Its task is to precisely dose the amount of exhaust gas returned to the intake manifold, which affects combustion temperature, nitrogen oxide emission levels, and the engine's overall performance.

A functional EGR valve helps maintain:

• stable idle speed,
• proper throttle response,
• reduced exhaust smoke under load,
• correct cooperation with the engine control electronics.

Benefits of using an original Mercedes component

Using an original Mercedes component ensures a proper fit for the intake and exhaust system and compatibility with factory engine control unit maps. This minimizes the risk of diagnostic errors, limp mode, and incorrect readings from sensors associated with the EGR system.

Choosing a used, original valve from this group is a solution that allows you to combine:

• factory geometry and operating characteristics,
• compatibility with electrical and mechanical installations,
• attractive cost compared to new replacements.

Component condition and service application

The offered exhaust gas recirculation valve comes from dismantling and is sold as a used part, which allows for an economical repair of the EGR system in Mercedes W204 and W212 diesel engines. This type of component is particularly useful when troubleshooting issues such as unstable cold operation, power loss, or recurring errors related to exhaust gas recirculation.

Replacing the EGR valve is recommended, among other situations, when cleaning does not provide a lasting effect or when the mechanical part of the valve shows excessive wear. Installing an original component from the same design group allows for restoring correct engine operating parameters without interfering with the ECU software.

Selection and integration with the vehicle system

Before purchasing, it is worth verifying the valve's compatibility with the specific OM651 engine version and W204 or W212 body year using the OEM part number and interchangeable numbers available in the technical specification. This ensures that the element from the EGR valves and parts group will work correctly with the existing installation and engine accessories.

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 valve bodies, actuators, or additional control components, check the available parts in the Mercedes EGR valves and parts category.

Technical support and additional materials

When planning service work on modern diesel units, it is worth using reliable sources of knowledge regarding the design and operation of contemporary powertrains. A good reference point for comparing solutions used in different brands can be an article describing the development of sports versions of compact cars, available here: Hot-hatch legend: the evolution of the VW Golf GTI from Mk1 to Mk8 – design changes and VW car parts.