I'll Take teh Case!
What kind of truck is this on? :think: I thought the 04 Silverados/Sierras still used the 4157k. If that is the number you meant...then yes a 3157NA (amber) will work.
:word:Whifflebat said:if it were me, i'd just make a trip to the auto parts store and compare your current DRL to different bulbs in the store...if its the same shape/connector and amber...it should work....
Add me to that list. One of my DRLs have been out for over a year now. I just turn the other one off when I turn the truck on. I would change it but they always burn out quick. :guns:Matt said:haha that would be good since ive noticed nearly every nbs suburban or tahoe ive seen has a drl out.