Mercedes-Benz Exhaust Gas Recirculation (EGR) Valve - Hella 6421401060

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 Hella

Hella is a German based manufacturer of specialty lighting parts for automobiles and is an OEM (Original Equipment Manufacturer) for Audi, BMW, Mercedes, Mini, Subaru , Toyota, Volkswagen and more. Hella lighting solutions include headlights and fog-lights, complete headlight assemblies, and all the other internal bells and whistles that allow your vehicles lighting system to run impeccably every time you turn the ignition over. One of the most well-known automotive suppliers, Hella ranks highly among the top 50 producers of parts in the entire world and has expanded beyond lighting and into electronics for vehicle interiors. The company was technically founded in 1899, and initially was a producer of candles and lamps for horse drawn carriages. A lot has changed in over 100 years.