EGR Valve

Performs the exhaust gas recirculation

The exhaust gas recirculation (EGR) system is a system that reduces nitrogen oxide (NOx) emissions in combustion engines. 

EGR valve operates by re-circulating a portion of the engine’s exhaust gases, routing them back to the engine intake, thus introducing them to the combustion.   

As a result, the oxygen content in the air-fuel charge mixture is reduced. Consequently, the combustion temperature gets lowered and the nitrogen oxide (NOx) gas concentration in the exhaust reduces significantly.

Nissens' Solution

  • Range & Availability

    An attractive initial product range covering the most popular vehicle models within Euro 4 and Euro 5 norms.

    Pneumatic and solenoid-operated EGR valves.

  • Reliable & Safe

    Fully tested within the most critical functions to ensure the valve’s proper fit and operation. 

    Offer a harmonious exhaust gas recirculation process, leading to reliable engine combustion with proper exhaust emissions.

  • Easy Handling

    No fees, no charges, no return of old units.
    Complete, Factory New EGR Valves!

Nissens' Product Benefits

  • Easy Installation

    Relevant gasket set of OE-matching quality included in the product box.

    Fits the engine layout and the relevant connections smoothly. Fully compatible with the vehicle’s systems. 

  • Proven Reliability

    The highest-grade, industry acknowledged materials and comprehensive product testing is applied to our EGR valves to ensure the component’s long, reliable operation in extreme conditions that are typical for harsh environments, such as heat of combustion and exhaust gases flows. 

  • Robust Design

    The overall product quality, including finish, material and testing, matches strict automotive OE standards.

    Key components made of high nickel percentage alloys, offering superior heat resistance and durability in extreme temperatures.

Technical Details

EGR valves operate in the extreme temperature range of the exhaust gases. Most common issues with the EGR relate to improper quality of the exhaust gases and related systems.

An excessive carbon/soot formation that builds up inside the valve is one of the most common causes for EGR valve failures. Excessive oil consumption and thus combustion contamination, malfunction of crankcase ventilation, turbocharger failures, improper fuel and/or improper fuel injection can lead to excessive carbon fouling, soot build up and restricting of the opening/closing function of the valve. 

Specific driving patterns (e.g. only driving short distances) over the long term can also affect the EGR valve’s operation.

A malfunctioning EGR valve will result in improper engine combustion and lead to choking/irregular idling and can typically be spotted by engine faults registered by the ECU.

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