Cummins ISX EGR Valve & Cummins ISX15 EGR Valve

Diesel engines produce harmful nitrous oxide (NOx) emissions, making it important to reduce these emissions to stay in compliance with NOx emissions regulations. The Cummins ISX EGR valves and ISX15 EGR valves help reduce NOx emissions by recirculating exhaust gas back into the engine which lowers combustion temperatures. The Cummins ISX EGR valve is designed for Cummins ISX diesel engines while the Cummins ISX15 EGR valve is specifically designed for use in a Cummins ISX15 engine.

The Cummins ISX EGR valve plays an important role in reducing emissions. If there is a problem with the EGR valve, it is important to repair or replace the valve to stay in compliance with emissions regulations.

HD Turbo provides Cummins ISX EGR and Cummins ISX15 EGR valve replacements that help control NOx emissions. Our remanufactured Cummins EGR valves have been disassembled, cleaned, closely examined for wear and damage, and properly rebuilt so that they function at the same level as a new part. Each of our Cummins EGR valves are also protected by our 12-month unlimited mileage warranty.

What is a Cummins ISX EGR Valve and How Does It Work?

The Cummins ISX Exhaust Gas Recirculation (EGR) valve is a component used in Cummins ISX diesel engines to recirculate a portion of the exhaust gases back into the engine which lowers the combustion temperatures, resulting in a reduction of NOx emissions. The Cummins ISX15 EGR valve is designed specifically for use in the heavy-duty Cummins ISX15 engine.

The ISX EGR valve works by redirecting some of the exhaust gas, which consists of unburnt fuel and carbon, back into the intake manifold. The exhaust gases reduce the amount of oxygen within the engine cylinders, resulting in lower combustion temperatures. The lower temperatures reduce the amount of NOx emissions produced. EGR systems slightly decrease engine power by lowering combustion temperatures, but they are essential for complying with emissions regulations.

Symptoms of a Faulty Cummins ISX EGR Valve

A faulty Cummins ISX EGR valve causes increased NOx emissions and can also affect engine performance. The EGR valve may fail due to carbon buildup or if the valve becomes stuck open or closed. The following are the symptoms of a faulty ISX EGR valve:

• Check engine light: If the engine detects a malfunctioning EGR, the check engine light will likely come on.
• Rough idle: Faulty EGRs result in an inconsistent air-fuel mixture which causes the engine to run unevenly at idle speed. This can be caused by the valve being stuck open.
• Reduced engine power: Faulty EGRs could cause a decrease in overall engine power and acceleration.
• Poor fuel economy: Increased fuel consumption caused by a faulty valve can lead to poor fuel economy.
• Engine knocking: A closed EGR valve can cause engine knocking or pinging sounds.
• Black exhaust smoke: A faulty EGR valve can cause the release of excessive black smoke from the exhaust.
• Engine hesitation: The engine may stumble or hesitate while accelerating.

Cummins ISX EGR Valve Replacement

A faulty or failing EGR valve must be replaced to reduce NOx emissions and ensure peak performance of Cummins ISX engines. At HD Turbo, we provide remanufactured Cummins ISX EGR valve replacements that have been cleaned and repaired with new or rebuilt components, so you can expect the same performance as a new part. You can trust our remanufactured EGR valves to be dependable and they are covered by our 12-month unlimited mileage warranty.

Browse our available remanufactured Cummins ISX EGR valves to find a replacement for your ISX engine.