XENON BALLAST For VW For SEAT D3S D3R D4S D4R 8K0941597E W003T22071 Function: Automotive ballast, waterproof, dustproof, shock-resistant, robust and durable, with a wide range of applications Features: The headlight control unit has a cold-start current that prevents overshoot, accelerating start-up without overloading the bulb, thus increasing illumination distance and range 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