1、OE Number: 394890, 393374, 691185, 797182 are reference part numbers. Please double check the part number of your item to ensure perfect fit. 2、Enhance Engine Power: The rectifier can provide a stable voltage to improve the ignition efficiency of the engine and enhance engine power. 3、Save Fuel: 12V voltage regulator can make the fuel burn more fully, improve fuel efficiency and reduce the use of fuel consumption. 4、Improve Headlight Brightness: Voltage regulator can be used instead of detecting rectifier to improve the brightness of headlight and make the light brighter. 5、Strict Standards: All components of the rectifier are strictly checked to meet the most stringent quality standards, waterproof, anti vibration and anti interference.