4LO941329 for Q7 headlight module daytime running light module Materials: The xenon headlight ballast is made of metal, offering a long service life and robust durability Function: Provides brighter, more efficient lighting, improving visibility during nighttime driving or in adverse weather conditions Headlight driver module, intelligent decoding eliminates faulty lights and improves light stability。 Xenon ballast, low power consumption and high brightness, no decay for long time use。, Manufacturer: LLYIXUAI