EGR Valve Mercedes R170 W202 C203 W210 M111 Exhaust Gas Unit A0021405560

EGR Valve Mercedes R170 W202 C203 W210 M111 Exhaust Gas Unit is an original exhaust gas recirculation system component designed for M111 series petrol engines in Mercedes R170, W202, C203, and W210 models. As part of the EGR Valves and Parts group, it allows for the restoration of proper exhaust system operation, stable engine performance, and compliance with factory manufacturer specifications. This used OEM component is a sensible choice for drivers looking for a technically compatible solution at an attractive price.

Specifications and technical data

• SKU: A0021405560
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0021405560
• Substitutable numbers: A0021405560, A 002 140 55 60, A1112381382, A 111 238 13 82, A1112381282, A 111 238 12 82
• Category: EGR Parts & Valves

Function and role of the EGR valve in the M111 engine

The EGR valve in M111 engines is responsible for the controlled recirculation of exhaust gases into the intake manifold, which limits combustion temperature and helps reduce nitrogen oxides. A properly functioning component:

• stabilizes engine operation across the full load range,
• reduces the risk of emission-related warning lights appearing,
• supports the maintenance of operating parameters consistent with factory specifications.

By using an original EGR valve, the correct exhaust gas flow characteristics are maintained, which is important for both engine durability and the proper operation of the engine control unit.

Compatibility with Mercedes models

The presented EGR valve has been designed to work with M111 engines used in popular Mercedes models, such as the R170, W202, C203, and W210. This means that the body geometry, mounting points, and connections are matched to the factory solutions used in these vehicle generations.

For the user, this means the ability to use the component as a replacement for the factory-installed valve without the need for installation modifications or the creation of additional adapters. Using an original solution also facilitates easier diagnostics in the future, as operating parameters remain within the range intended by the manufacturer.

Characteristics of the used OEM component

The offered EGR valve is a used part, sourced from a dismantled Mercedes vehicle. Such OEM components are often chosen by informed users who prefer original design and fitment over unreliable aftermarket replacements. In practice, this translates into:

• preservation of factory build quality and materials,
• reliable fitment to the manifold and vacuum or control installation,
• consistency with the engine control unit software.

A used EGR valve can be a good solution for maintenance repairs when the priority is combining functionality with service cost control.

Benefits of using an original EGR valve

Choosing an original EGR valve for a Mercedes with an M111 engine helps avoid typical problems associated with ill-fitting aftermarket replacements. The most important advantages include:

• maintaining correct exhaust gas flow characteristics and system pressure,
• lower risk of diagnostic errors related to EGR operation,
• easier integration with the existing installation without mechanical modifications.

Thanks to this, the repair of the exhaust gas recirculation system can be carried out in a predictable manner, maintaining parameters close to factory standards.

Related EGR system components in Mercedes

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 vacuum hoses, exhaust gas coolers, or additional control elements, check the available parts in the Mercedes EGR Valves and Parts category.

More about used parts and maintenance

Purchasing a used EGR valve is a solution often chosen by drivers who want to keep their car in good condition at reasonable service costs. It is worth learning the general principles of selecting and verifying components from the secondary market to consciously utilize the potential of original dismantled parts. A broader perspective on the topic of used components, their advantages, and limitations can be found in the article: Used parts – is it worth it? Key benefits for brand enthusiasts.