Wells EGR4332 EGR Valve The EGR Valve reduces emissions by re-routing a portion of the exhaust gas into the intake manifold When not replaced, vehicles can experience poor engine performance, poor idle, high NOx emissions, failed emissions test, hesitation, engine surging, or CEL/MIL illumination Designed to meet or exceed OE specifications in form, fit and function Global coverage for import and/or domestic applications