EGR Other components supplement or modify the function of the Exhaust Gas Recirculation system. These parts typically include EGR coolers, tubes, fittings, and mounting brackets utilized across various gasoline and diesel engine platforms. Functionally, they manage exhaust gas temperature and flow to optimize emissions control and engine performance. Materials commonly include stainless steel, aluminum, and high-temperature polymers to withstand thermal and corrosive environments. Precise fitment and sealing are critical for maintaining EGR system efficiency and preventing exhaust leaks.