Most luxury vehicles with factory HID headlights come with OEM D4R 66450. When it comes to the D4R HID Xenon headlight bulb, no competitors can match the quality of the Factory D4R 66450 HID Xenon bulb. Factory replacement Xenarc D4R 66450 HID Xenon bulb is made in Germany and offers a great combination of brightness (Approx. 3200lm), color temperature (Up to 4300K), and longevity (Approx. 2,500 hours). Genuine Factory D4R 66450 HID Xenon bulb offers the original quality light performance of a new car. The quality of the OEM D4R 66450 HID Xenon bulb is endorsed by all major car manufacturers.