I have oem 4300k bulbs. I'm trying to find which fog light bulbs - light output most closely match the headlights?...let me know all....thanks!

 

There are a ton of threads on this. It depends on if you're looking to match color or light intensity, etc., etc. I can tell you the Osram Silverstars have great light output but do not match the light color at all. To match the tint of the bulb you'll most likely need to get a "blue" bulb of some sort.