I installed these as well as the high-beams and the relay kit on 5/22/2015. One of these low beams was DOA. WCCC sent out a replacement. Then on 10/20/2016, after putting 3,033 miles on the car (rarely at night) one of these low beams burned out. I replaced it with a locally sourced halogen bulb. Then on 6/14/2017, the other low beam burned out, after 5,476 miles since installation. They look good, but don't last.