PIAA's Xtreme White Plus H9 with a Kelvin rating of 4000K provides an intense white light and the superior performance of Xtra Technology. So lose those boring factory bulbs and upgrade to PIAA's Xtreme White Plus H-9 and experience the difference.
Wattage= 65W = 120W XTRA, 4000K
Technology= Xtreme White Plus
Please see the Sierra BMW Bulb Application List if you're unsure what bulb your machine requires.
PIAA H9 Xtreme White Plus Bulb
Produced by PIAA of Japan