Feature: 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. Specification: Item Type: Voltage Regulator Rectifier Material: Aluminium Alloy Voltage: 12V OE: 394890, 393374, 691185, 797182 Application: Used to replace the old voltage stabilizer of the original vehicle, which meets or will exceed the OEM standard, and it can be replaced directly Rectifier Function: The rectifier uses semiconductor diodes to conduct current, thus rectifying and controlling the power supply, providing stable voltage for the battery, and improving the ignition efficiency of the engine.. Package List: 1 x Voltage Regulator Rectifier Note: 1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!