Low Beam Headlight Bulb - Compatible with 2007 - 2013 Mercedes-Benz S550 2008 2009 2010 2011 2012

The hardest part of buying this HID bulb was determining that it was the bulb causing the problem. My driver side headlight would go out while driving, and cycling the switch would turn it back on. I didn't know if the problem was the bulb, the ballast, or the switch. Thanks to the internet, I found out that HID bulbs go intermittent unlike other bulbs, and they recommended switching the bulb to the other side to make sure. Presto! Now the passenger side had the problem. So I ordered this bulb, and it arrived very quickly. It looked a little different from the original, but it fit and it works perfectly.