Mercedes EGR Valve - Wahler 6421401460

Product Information

An Exhaust Gas Recirculation (EGR) valve is an emissions control component that recirculates a portion of the engine’s exhaust gases back into the intake manifold. By mixing exhaust with the air-fuel charge, it lowers combustion temperatures, reducing the formation of harmful nitrogen oxides (NOx) and improving efficiency under certain conditions. Modern vehicles may use electronically controlled EGR valves for precise operation.

• Rough idle or stalling, caused by the valve sticking open and letting in too much exhaust.
• Poor performance or hesitation, often from a clogged or stuck-closed valve restricting proper gas flow.
• Check Engine Light (CEL) with related fault codes (e.g., P0401 “EGR flow insufficient” or P0402 “excessive EGR flow”).

About Wahler

Wahler is the leading OEM manufacturer of thermal solutions for BMW, Mercedes-Benz, Audi, Porsche ,VW as well as Volvo, Saab, Jaguar, Land-Range Rover as well as various US domestic and Asian applications.

Since 1902, Wahler has built its reputation with technically complex thermostats and thermos-solutions for automotive and industrial applications. For a short time, Borg Warner managed Wahler products. In 2020, Borg Warner sold all of the thermostat production facilities back to Wahler. Today, Wahler is back as an independent brand supplying worldwide OEMs with thermostats, electronic thermostats, thermoswitches and electric valves.

With Wahler, the original and replacement parts are identical. This means that Wahler-made parts are the same quality as the original issue used by automakers. The Wahler brand stands for premium quality. Wahler aftermarket parts come with the same assurances with respect to service life and operational reliability.