This pair of D2S Xenon HID bulbs are a direct replacement for your standard bulbs.These will only fit factory fitted Xenon HID Kit. Will save you on dealer prices. We have had customers call us up saying the dealer wanted 120 for 1 bulb!Factory colour temp is usually 4300K but these are also available in 5000K (Pure White, no blue), 6000K (Diamond white) and 8000K (Cool blue) & 10000K (Deep blue)12 Month Warranty12v 35W as standardFit 80% of cars with Factory fitted Xenons