EGR valves reduce emissions and increase engine performance. They lower fuel consumption and contribute to compliance with environmental standards. EGR Valve With Gasket For Focus 5S6Q9D475AD. It improves overall engine efficiency, resulting in a more stable idle, better fuel efficiency, and reduced oil pollution. Optimizes the engine's air-fuel ratio for more complete fuel combustion, reducing wasted unburned fuel. Reduces harmful gas emissions in exhaust., Manufacturer: gghhstore