The NISSENS 98401 EGR valve is engineered to precisely control the flow of exhaust gases back into the engine's intake manifold. This process helps to lower combustion temperatures, reducing the formation of nitrogen oxides (NOx), a major contributor to air pollution. Proper functioning of the EGR system is crucial for meeting emissions standards and maintaining engine efficiency. A faulty EGR valve can lead to increased emissions, poor fuel economy, rough idling, and potential engine performance issues. NISSENS is a reputable manufacturer known for producing high-quality engine management components. This EGR valve is built to meet or exceed original equipment specifications, ensuring reliable performance and durability for your vehicle.