Shop the best 9004 lighting upgrades at Dynamic Appearance! We carry premium 9004 bulb options for your aftermarket or OEM headlights and fog lights. 9004 LED bulbs are the current meta, thanks to the advanced technology over the past few years. They boast a longer lifespan than the competition while being much easier to install on your car or truck. Even though cheaper LED bulbs are still not very bright, we've assembled the best brands that offer superior performance. 9004 HID lights, on the other hand, are still a go-to for many automotive enthusiasts. HID lighting still outperforms most cheaper LED bulbs on the market. If space is an issue, HID bulbs are smaller, guaranteeing fitment on any vehicle. And who doesn't love watching your headlight bulbs get brighter when you start up your ride?