SDX Extra Bright HID Xenon AC Headlight Replacement Bulbs - D3S - 8000K - (1 Pair) Important: This product is only compatible with cars with an HID system already installed. Otherwise a conversion kit is necessary. Ultra Bright 3600 Lumen Fused-Quartz Xenon Bulb: Produces 5X brighter light than halogen, uses up to 80% less power, increases visibility, and made to last with a 3000+ hour non-fading lifetime Simple installation - Usually in 20 minutes or less (some vehicles may require a professional installation) 100% Water-proof, 100% Dust-proof, 100% Shock-proof Superb night-time visibility