Our bulbs are manufactured with the most stringent standards, high tech filaments, and krypton and xenon gases to provide a high intensity white beam that's similar to daylight, unlike the yellow glow that standard factory Thunderbird headlight bulbs emit. That means they speed up your reaction time when you need to avoid a collision, because you can see further and experience less eye strain. OEM manufacturing to your car's specs ensures that they install in a flash, so you're back on the road quickly. Of course, they're DOT and SAE compliant, so they're street legal. And, our Thunderbird headlight bulbs are built to last and backed by a great warranty.