The NISSENS Exhaust Gas Recirculation (EGR) Module, part number 98178, is a critical component for modern vehicle emission control systems. It functions by recirculating a portion of exhaust gas back into the intake manifold, which lowers combustion temperatures. This reduction in temperature significantly decreases the formation of nitrogen oxides (NOx), a major air pollutant. Proper functioning of the EGR module is essential for meeting environmental regulations and maintaining optimal engine performance. A faulty EGR module can lead to increased emissions, rough idling, poor fuel economy, and potential engine damage. NISSENS is a reputable brand known for producing high-quality engine management components that meet or exceed original equipment specifications. This module is engineered for precise fitment and reliable operation, ensuring seamless integration with your vehicle's existing EGR system. By choosing this NISSENS EGR module, you are investing in a durable and effective solution to maintain your vehicle's emission control performance and overall engine health.