Wells 4F2057 EGR Valve Exhaust Gas Recirculation Valve

The Wells 4F2057 EGR valve (exhaust gas recirculation valve) is a replacement emissions control part. It routes a portion of the engine's exhaust gas back into the intake, which lowers combustion temperatures and reduces nitrogen oxide (NOx) emissions.

Key Features:

• Opens and closes to meter exhaust gas flow into the incoming air/fuel mixture
• Helps cool the combustion chambers and reduce NOx emissions
• Designed to meet or exceed OE specifications for fit, form and function
• Typically mounted on or near the intake manifold

Signs the EGR valve may need replacement:

• Rough idle or stalling
• Hard starting
• Decreased power or fuel economy
• Increased emissions or a failed emissions test
• Illuminated check engine light

Wells Vehicle Electronics makes emissions and ignition replacement components. A new EGR valve can help restore smooth engine operation and keep the emissions system working properly.