Mercedes-Benz W203 W211 W220 Exhaust Gas Recirculation EGR Valve A0021403660

Mercedes-Benz W203 W211 W220 Exhaust Gas Recirculation EGR Valve is an exhaust gas recirculation system component designed for installation in the front part of the vehicle, specifically engineered for Mercedes models. A used valve from this group allows for the restoration of proper EGR system operation, stabilization of combustion parameters, and reduction of exhaust emissions while maintaining the factory engine performance characteristics.

Specifications and technical data

• SKU: A0021403660
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0021403660
• Substitutable numbers: A0021403660, A 002 140 36 60, KZ
• Location on the vehicle: Front
• Category: EGR Parts & Valves

Purpose and function of the EGR valve

The valve from the EGR valves and parts category is responsible for the controlled supply of exhaust gases to the intake system, which helps lower combustion temperatures and reduce nitrogen oxide emissions. A properly functioning component in the front part of the engine bay helps maintain stable engine operation, reduces the risk of jerking, and improves idle smoothness.

In Mercedes W203, W211, and W220 series vehicles, a functional EGR valve is important for:

• maintaining correct combustion parameters across various load ranges,
• ensuring compliance with factory engine control unit settings,
• reducing excessive exhaust smoke during acceleration.

Construction and placement in the vehicle

The presented component is intended for installation in the front part of the vehicle, which facilitates service access and reduces replacement time. The valve design is adapted to factory mounting points in Mercedes models, allowing for the retention of original routing for hoses and intake ducts.

This solution allows for:

• seamless fitment to the existing installation in the engine bay,
• maintaining the correct flow direction of exhaust gases and air,
• reducing mechanical stress resulting from engine vibrations.

Product characteristics and benefits of use

As a component from the EGR valves and parts group dedicated to Mercedes, this product allows for maintaining the consistency of the engine control system with the manufacturer's factory specifications. A used valve can be an attractive solution when you want to reduce repair costs while maintaining the original design of the exhaust gas recirculation system.

Replacing a faulty EGR with a functional component of this type helps to:

• reduce the risk of the engine entering limp mode due to EGR system errors,
• stabilize throttle response in typical RPM ranges,
• reduce the need for frequent clearing of errors related to exhaust gas recirculation.

Selection and integration with the Mercedes system

To ensure proper cooperation with the electronics and intake system, the EGR valve should be selected for the specific vehicle generation. For Mercedes W203, W211, and W220 models, it is essential to match the engine version and accessory configuration to maintain the correct position of the component in the front part of the engine bay and proper hose connection.

Before installation, it is worth verifying the compatibility of the part with the vehicle using identification data such as the product SKU, OEM part number, and available interchangeable numbers, which are detailed in the technical specification.

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

Technical knowledge and additional materials

When working with the exhaust gas recirculation system and other engine components, it is worth using reliable sources of technical knowledge. To compare how manufacturers approach original parts and vehicle construction, you can read an article discussing the differences between classic and modern automotive solutions: Classic Mini vs modern MINI – how the construction has changed and which original Mini parts help preserve their character.