35w. Ill tell ya man i love them. And now that i think about it man i think they only come in 35watt. See HID bulbs and regular xenon bulbs are different. HIDs use ballasts where as regular xenon bulbs do not. HIDS run at a lower wattage thats why they use ballastThanks. Can I ask if those 6k you have are 35w or 55w? Because apparently that makes a difference. I saw some really ugly deep blue ones on a silver civic today and I got really concerned about how my HIDs would look if I got them.