That means they emit a high intensity white beam that's similar to daylight, unlike the yellow light that factory Windstar headlight bulbs emit. And, they're made to OEM standards, so they fit to your car's specs, and that means that they install in a flash and you're back on the road pronto. Of course, they're DOT and SAE compliant, guaranteeing they meet all of the necessary standards to make them street legal. And, our Windstar headlight bulbs are backed up with extended warranties to guarantee that they keep shining for miles and miles of rugged road use.