Mercedes W205 M274 Housing Exhaust Gas Recirculation EGR Valve A2741420519

Mercedes W205 M274 Housing Exhaust Gas Recirculation EGR Valve is a specialized component of the exhaust gas recirculation system, designed for M274 series gasoline engines in Mercedes W205 class models. This solution allows for efficient discharge and cooling of exhaust gases before they are reintroduced into the intake manifold, which supports stable engine operation and compliance with emission standards. Thanks to the factory design dedicated to a specific vehicle generation, the part ensures a precise fit to the exhaust and EGR control system.

Specifications and technical data

• SKU: A2741420519-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2741420519
• Substitutable numbers: A2741420519, A 274 142 05 19
• Fuel type: Petrol
• Category: EGR Parts & Valves

Purpose and function in the EGR system

The exhaust gas cooler integrated with the EGR valve in the M274 engine version is responsible for lowering the temperature of exhaust gases directed back into the combustion chamber. In gasoline engines, this allows for more stable operating conditions, limiting engine knocking, and reducing nitrogen oxide emissions. A properly functioning EGR module with a cooler also contributes to smooth idling and correct response to load.

The element belongs to the EGR valves and parts group, which means it works directly with the engine control system, temperature sensors, and exhaust flow sensors. The proper operation of this component is crucial when diagnosing errors related to exhaust gas recirculation, power loss, or increased fuel consumption.

Benefits of using an original Mercedes component

Choosing a component prepared by the Mercedes brand ensures the maintenance of factory EGR system operating parameters. The design of the exhaust gas cooler and valve has been optimized for flow, resistance to high temperatures, and compatibility with the engine control unit software. Thanks to this:

• you maintain compliance with factory EGR control maps,
• you minimize the risk of diagnostic errors and limp mode,
• you preserve the predictable behavior of the power unit across the full load range.

The element is intended for engines powered by gasoline, which is important when selecting parts relative to other engine variants in the manufacturer's range.

Condition, selection, and installation aspects

The offered exhaust gas cooler with EGR valve is a secondary market part in used condition, which allows for an economical repair while maintaining the original design. This type of solution is particularly beneficial when fixing faults related to cooler leaks, EGR valve blockage, or exhaust gas flow errors.

Before installation, a standard workshop procedure is recommended, including checking the cooling system for leaks, the patency of exhaust channels, and the correct operation of the valve mechanism after connection to the vehicle's installation. Proper part selection is facilitated by identification via the OEM number and interchangeable numbers, as well as matching to the specific M274 engine version in the W205 body.

Support with part selection and additional information

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 exhaust gas coolers, control valves, or recirculation pipes, check the available parts in the Mercedes EGR valves and parts category.

When making a decision to purchase a secondary market element, it is worth analyzing the differences between original parts, replacements, and used components in terms of cost, durability, and fit. A detailed comparison can be found in the article Original, replacement, or used – which car parts are the most cost-effective?, which will help you choose a service strategy appropriate for your vehicle and budget.