Always replace in pairs to ensure a symmetric light beam from both bulbs on the road. Headlights dim over time Contents: 1 pair of HID Xenon Replacement Bulbs for aftermarket HID kits (Ballast not included). Compatible with most aftermarket HID Xenon kits 35W. 35W HID light source produced up to 3 x the lumens at the light source when compared to a 55W halogen bulbs HID lamps will last, on the average over 2 times as long as halogen bulb. Xenon Headlight Bulbs (2 pieces) 35W OEM Xenon replacement original bulbs for HID (Xenon) lights. Features and Specs. German technology, high quality HID bulbs . Easy installation process. In rare cases, you may need professional installation. Power: 35W. Expected Life: 3500 Hrs. Fitment: 1) Please double check the size of the bulb with your car before purchase. 2) Please check your car Owner's Manual. 3) We Suggest you to use Sylvania or Philips automotive lamp replacement guide online to ensure you purchase the right size bulb. Color temperature is a measure of the color's intensity and the tone of the light, we offer the following color temperatures which we have in stock for all vehicles: 3000k ( Golden Yellow ). 4300k (OEM White). 6000k ( Diamond White / Hyper White ). 8000k ( Iceberg Blue / Bright Blue ). 10000k ( Deep Blue / Dark Blue ). 12000k ( Purple ).