Morimoto D4S 5500K XB OEM HID Bulb Compatible replacement for all HID/Xenon headlights accepting "D4S" bulbs 2000 hour lifespan lasts 6-10 years under average daily use Available in 4500K, 5500K, 6500K to suit a wide variety of tastes Meets and exceeds OE specifications for measured luminosity and reliability