Wells 4F1834 EGR Valve - Exhaust Gas Recirculation Valve

The Wells 4F1834 EGR valve (exhaust gas recirculation valve) is a replacement emissions control part from Wells Vehicle Electronics. It opens and closes to control how much exhaust gas flows back into the engine's intake, where it mixes with the incoming air/fuel mixture and is burned again.

Key Features:

• Helps reduce nitrogen oxide (NOx) emissions by recirculating a portion of the exhaust gas
• Helps cool the combustion chambers, which reduces harmful emissions
• Designed to meet or exceed OE specifications for fit, form and function
• Interchanges with OEM 3W4Z-9D475-AA, 3W4Z-9D475-AB, 3W4Z-9D475-AC and 6R8Z-9D475-AA

Signs the EGR valve may need replacement:

• Rough idle
• Stalling or hard starting
• Decreased power or fuel economy
• Increased emissions or a failed emissions test

The EGR valve is usually mounted on or near the intake manifold. Replacing a failed valve helps restore smooth engine operation and emissions system performance.