Return fuel more smoothly from idle to improve fuel economy.Cleaner oil helps to extend engine life.Reduce smoke and dust output. EGR Valve For MV778Q 18011P2MA00 18011P2M305. Reduced exhaust pollutants: Introducing some exhaust gas into the intake manifold and back into the cylinder lowers combustion temperature, reducing nitrogen oxide emissions and meeting environmental standards. It maintains reliable operation even in extreme engine environments and protects the engine from damage caused by abnormal pressure. It maintains reliable operation even in extreme engine environments and protects the engine from damage caused by abnormal pressure., Manufacturer: zengyanyan