The function of the EGR valve is to control the flow of recirculated exhaust gases depending on the engine load. F2CZ9D475A Exhaust Gas Recirculation (EGR) Valve For F150 For F350 For Ranger For Mercury For Sable. Exhaust gas recirculation valves are installed in all modern diesel engines as well as a growing number of petrol engines, reducing fuel consumption. The inner wall of the flow channel is smoothly polished to reduce the adhesion and accumulation of particulate matter in the exhaust gas. It improves overall engine efficiency, resulting in a more stable idle, better fuel efficiency, and reduced oil pollution., Manufacturer: ROUSHI