Kensun Extra Bright HID Xenon DC Replacement Bulb - H11 - 10000K - (1 Single Bulb) 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 3X brighter light than halogen, uses up to 80% less power, increases visibility, and has long lasting with 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