Feature: 1. Replacing part numbers for reference: 4G0907697D, 28357987, fit for A1 A3 A4 A5 A6 A8. 2. Quick start with low current, improves the irradiation distance and range. Pin‑type design, compatible with ultra‑fast start ballast. 3. Superior electronic ignition technology, stable high voltage output, less interference, strobe up to 10 million times without damage. 4. Cold start current, no overshoot, speed up the bulb without overpower, and extend the life of the lamp. 5. With protection against short circuit, circuit break, polarity, overload and load, reliable to use. Specification: Item Type: DRL Control Ballast Material: Aluminum Alloy + Plastic Color: Silver + Black Manufacturer Part Number: 4G0907697D, 28357987 Interchange Part Number: 4G0907697D, 4G0.907.697.D, 4G0907397D, 4G0.907.397.D, 401140244 Rated Input Voltage: 12 (V) Working Current: 4.5 (A) Operating Temperature Range: -40°C-105°C Switching Times: 100000 (times) Starting Current: 8 (A) Life: 10000 (Hours) Output Power: 35 (W) Input Voltage Range: 9-16 (V) Input Power: 35 (W) Installation Instructions: Fixed installation, plug and play Fitment: Fit for A1 8X 2015-2017 Fit for A3 8V 2012-2016 (with for xenon headlamps) Fit for A3 8V 2016-2019 (with for xenon headlights) Fit for A4 B8-8K 2011-2015 Fit for A5 8T-8F 2011-2016 Fit for A6 C7-4G 2011-2014 (with for xenon headlights) Fit for A6 C7-4G 2014-2017 (with for xenon headlights) Fit for A8 D4-4H 2014-2017 (with for xenon headlights) Fit for Q3 8U 2011-2014 Fit for Q3 8U 2014-2018 (with for xenon headlights) Fit for Q5 8R 2013-2016 Five Protection Functions of Ballast: Short Circuit Protection: If the line in the car encounters a short circuit, it will automatically cut off the power; Circuit Break Protection: automatic monitoring and control when the car is powered off; Polarity Protection: Automatic power off when the positive and negative poles are reversed; Overload Protection: Automatic balance when the voltage and current in the car are overloaded; Load Protection: It will automatically make up when the voltage and current in the car are loaded.. Package List: 1 x Ballast Note: Please double check the part number of your item, matching information is for reference only. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!