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Exhaust Gas Recirculation Valve OE technology
With over 20 years OE EGR system expertise, our valves are fitted as OE to millions of vehicles worldwide. We bring this same expertise to the aftermarket, with a comprehensive range including rotary and linear configurations, all based on our proven electronically actuated EGR valve technology.
Built for tough conditions
Because of the harsh environment of its location on the intake manifold, we only use the highest quality materials such as robust stainless steel valves, high temperature internal components and RTV silicon seals. The result – a quality EGR valve, highly resistant to extreme heat, contamination, corrosion and wear.
Precision engineered
Even the smallest of differences in the shape of the valve head can affect both valve leakage and flow metering, leading to increased fuel consumption, carbon build-up and decreased vehicle performance. That’s why every Delphi EGR valve is precision engineered to match the OE design.
Super quick response time
All our valves feature fast opening and closing response times for enhanced engine control and lower emissions from reduced exhaust gas lag. The high opening and closing force also helps to minimize the impact of corrosion, ensuring a longer lasting part.
The Delphi Difference
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100 years of OE experience, supplier to the world’s top automakers
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OE heritage and knowledge built into every aftermarket part
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Comprehensive portfolio for a wide range of vehicles and model years
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Streamlined SKUs for easy inventory management
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Support through tools, tips and training
Related product resources and downloads
Resource Highlights
Here we’re looking at how to adapt a low-pressure EGR valve after it’s been placed in a diesel vehicle.
The process is straightforward enough, but you’ll need your Delphi BlueTech diagnostic tool handy.
We walk you through the correct procedure step by step, from checking for fault codes to a final road test.
In this video we’ll show you how to:
Check for fault codes in the engine ECU
- Use the software
- Check and clear any errors
- Complete a dynamic road test, and recheck the ECU
What is an EGR valve, and what does it do?
The exhaust gas recirculation valve, or EGR valve for short, recirculates finely metered quantities of exhaust gas to the engine intake system. This delivers increased engine efficiency, reduced fuel consumption and lower NOx emissions.
What can cause an EGR valve to fail?
EGR valves operate in a hostile environment. Over time, they’ll experience wear and tear. The single biggest cause of failure, though, is the buildup of carbon particles from the exhaust gases along the EGR and intake system passages. Over time this will clog tubes, exhaust gas channels and eventually the valve’s plunger mechanism, causing it to either stick open or close. Failures can also be caused by a rupture or leak in the valve diaphragm.
How can you recognize a failing EGR valve?
- Check engine light: as with most engine management components, a problem with the EGR valve may trigger the check engine light.
- Engine performance: if the valve is stuck open, the vehicle’s air-fuel ratio will be disrupted causing engine performance issues such as reduced power, poor acceleration and rough idle. It may also produce turbo boost pressure leaks, causing the turbo to work harder.
- Increased NOx emissions: when the EGR valve remains shut, the high temperatures in the combustion chamber that result will leave a lot of unburned fuel in the exhaust, leading to increased NOx emissions and reduced fuel efficiency.
- Engine knock: the higher temperatures and NOx may also result in increased detonation or knock. You’ll be able to hear this as a knocking noise in the engine.
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