What is the construction and purpose of EGR valves and parts?

EGR valves and parts are exhaust gas recirculation system elements mounted between the exhaust and intake sides of the engine. A typical set includes the valve, pipes, seals, and in many versions, an EGR cooler and mounting hardware. Their task is to control the flow of a portion of exhaust gases back into the intake system to lower combustion temperature and limit NOx emissions.

What are EGR valves and parts used for?

EGR valves and parts are used to control exhaust gas recirculation in petrol or diesel engines. This system limits the amount of nitrogen oxides in the exhaust while interacting with the intake, engine controller, and exhaust accessories. Proper EGR operation also affects engine smoothness and the vehicle's compliance with emission standards.

What role does the EGR cooler play?

The EGR cooler is a heat exchanger that lowers the temperature of exhaust gases before they return to the intake. Its presence allows for more effective reduction of combustion temperature and improves system performance in modern engines. This element works with coolant pipes, the EGR valve, and seals, so when selecting one, you must also check the connections and channel layout.

How to select EGR valves and parts for a specific car?

The most important thing is to compare the OEM number, interchangeable numbers, engine version, and fuel type. It is also worth verifying the control type, number of pins, connector layout, mounting points, and installation location. For parts integrated with a cooler or pipes, it is good to compare complete photos and housing markings.

What symptoms indicate a problem with the EGR system?

Most commonly, power loss, rough idling, smoke, and the check engine light appear. These symptoms may result from carbon deposits, a stuck valve, leaking pipes, or electrical issues. In practice, it is worth combining computer diagnostics with visual inspection and system tightness assessment.

What should be checked before installing a used EGR element?

Before installation, check the cleanliness of the channels, the condition of mating surfaces, threads, seals, and electrical or vacuum connectors. Compatibility of the part with the body version and engine accessories is also important, especially when the element interacts with a cooler, manifold, or coolant pipes. A well-chosen component allows the system to operate correctly without unnecessary modifications.

EGR valves and parts

At Global Parts, we offer a wide selection of original used car parts, including EGR valves and parts for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. The EGR valves and parts we offer undergo quality control to ensure you receive a top-quality product.

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Gas Recirculation Pipe Mercedes R172 W204 W212 Exhaust Tube A6541400360

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Mercedes-Benz A B W169 W245 OM640 EGR Cooler Valve Line Pipe Hose A6401410204

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Mercedes-Benz A B W169 W245 OM640 EGR Cooler Valve Line Pipe Hose A6401410204

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Mercedes C207 W221 OM642 Diesel EGR Exhaust Gas Recirculation Valve A6421402160

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EGR Bracket Mercedes W246 Diesel OM651 Exhaust Valve EGR Support A6510943027

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Mercedes W205 OM642 Diesel EGR Valve Actuator Control Unit Module A6261400060

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EGR Pipe Mercedes W177 C118 W247 Diesel OM654 EGR Cooler Pipe A6541401060

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EGR Pipe Mercedes W164 W204 W212 OM642 Valve Line Diesel Engine A6421401608

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