This NISSENS EGR valve, part number 98172, is designed to restore your vehicle's exhaust gas recirculation system to its original functionality. Properly functioning EGR valves are crucial for reducing nitrogen oxide (NOx) emissions by recirculating a portion of the exhaust gas back into the engine's combustion chambers. This process lowers combustion temperatures, thereby minimizing the formation of harmful NOx. Engineered to meet or exceed original equipment specifications, this valve ensures a precise fit and reliable operation, contributing to improved fuel efficiency and smoother engine running.