These 9006 led bulbs are powered by 8 pcs of Philips Lumileds ZES super bright LED to increase visibility. Installation was very easy to complete, simple plug and play, fit tight in the socket. They don’t have any fans that may fail over time to cause the bulbs to overheat. There is enough room for the cord. We leave the dust cover off and install the rubber cover to expand the room inside and improve airflow.
Before turning on these new led headlight bulbs, my initial concern was that these headlights would not have a focused beam, and would create a unsafe glare to other drivers. But as advertised, these headlights produced a highly focused, purely white light for my 06 Chevy Tahoe Z71. Much better light output than the horrible stock halogen bulbs.
Excellent pair of bulbs. Like the construction; fanless with removable heatsink. They worked out great & seam to be of equal or better quality than several LED headlights I have purchased before.