Mercedes W203 W210 OM611 Exhaust EGR Cooler Connector A6111400208

Mercedes W203 W210 OM611 Exhaust EGR Cooler Connector is an original exhaust gas recirculation system component designed for installation in the front part of the engine bay. Thanks to its factory fit for the OM611 unit, it ensures stable exhaust gas flow and proper cooperation with the EGR valve, which translates into efficient engine operation and the maintenance of correct emission parameters.

Specifications and technical data

• SKU: A6111400208
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6121410104
• Substitutable numbers: A6111400208, A 611 140 02 08, A6111400204, A 611 140 02 04
• Location on the vehicle: Front
• Category: EGR Parts & Valves

Purpose and function of the EGR connector

The EGR connector in Mercedes W203 and W210 models with the OM611 engine is responsible for the controlled transport of exhaust gases between the intake system components and the recirculation valve. A properly selected and airtight connector reduces the risk of leaks, power loss, unstable idle, and exhaust emission-related errors. Using an original component from the EGR Valves and Parts group allows you to maintain the factory performance characteristics of the power unit.

Design and vehicle placement

The component has been designed for installation in the front part of the vehicle, in the immediate vicinity of the engine accessories. This placement facilitates service access, condition monitoring, and potential replacement during work on the intake or exhaust gas recirculation system. The design of the connector is adapted to the geometry of the engine bay in Mercedes W203 and W210 models, which minimizes stress, the risk of rubbing against other components, and leaks at the connections.

Benefits of using an original EGR connector

Using an EGR connector dedicated to the OM611 engine in Mercedes W203 and W210 vehicles provides a number of practical operational benefits:

• factory fit for the exhaust gas recirculation system and engine accessories,
• stable exhaust gas flow, promoting the maintenance of correct engine operating parameters,
• reduction of the risk of leaks and seal failures in the EGR system area,
• easier diagnostics and service thanks to the predictable routing of the connector,
• maintenance of compliance with the vehicle's factory configuration.

The product comes from dismantling, which allows you to combine original build quality with cost-effective repairs compared to new parts.

Condition, fitment, and service application

The EGR connector is offered as a used part, which in practice means it has been in service but is still suitable for further use after proper installation. For mechanics and users, this means the possibility of an economical repair of the exhaust gas recirculation system while maintaining compatibility with factory components. The element will work well both for standard replacement of a worn-out connector and for comprehensive maintenance of the intake system in the OM611 engine.

Installation and operational recommendations

When installing the EGR connector, it is recommended to thoroughly clean the mating surfaces, check the condition of the seals, and verify the correct positioning of the connector relative to other accessory components. After installation, it is worth performing a system leak test and computer diagnostics to confirm the correct operation of the EGR valve and the absence of errors in the engine control unit. Regular visual inspection of the connector during periodic maintenance allows for early detection of any signs of wear or leaks.

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 hoses, connectors, or exhaust gas recirculation system connection elements, check the available parts in the Mercedes EGR Valves and Parts category.

To make the most of a used EGR connector and other dismantled components, it is worth learning the principles of their proper maintenance and operation – you will find practical tips in the article How to extend the life of used car parts?. If you are considering a choice between a dismantled part and a replacement, the guide 5 reasons why a used OEM part is a better choice than a replacement may also be helpful, making it easier to make an informed service decision.