thunder550

iTrader: (70)

Check out Elite LED's - they are a sponsor over at GMFullsize

http://leds.elitedetails.com/3157.htm

SSlow 4.8

iTrader: (4)

or.. try these guys http://www.autodirectsave.com/home.asp

they have all kinds of bulbs.. i'd stay away from the colored ones tho, they will burn off. My hyper white headlights and amber drl's are from that website... as well as my hyper white 3157's for the reverse light which might be what your looking for... however i think these bulbs might be blue

smooth sierra

I run the amber 4157 in both the drl lights and the turn signals. I personally like the amber lights better. the 4157 is a higher wattage bulb that burns much brighter, but will plug right in the socket.

2004SSS

iTrader: (25)

the piaa 3157 is the only bulb i have found to last long, they have been running for about 8 months on my truck so far, !

smooth sierra

been running the 4157's for a little over 2 years now. No problems yet

stone150

iTrader: (2)

LED's!!

Bo185

I think some body said the LED's don't last long as DRL but can't remember the thread.

http://www.superbrightleds.com/
SUPER BRIGHT LEDS home

CHEVY6000VHO

iTrader: (2)

I've always had good luck with the Piaa bulbs. I think I will try those since I use Piaa's now.
What are the 4157's??? What's the 4 mean vs the 3 in the part #? Are they amber or clear? The clear lights are what are supposed to be in there. I think they don't look right with the amber ones on durring the day. IMO.

Jim

04BlackGmc

iTrader: (18)

Watt Numbers may not be 100% but the info is pretty right...
3157 is like 22 Watts and has a lower temp base where it plugs in
3357/3457 is like 3 or so watts more and has a high temp base
4157 is pretty much the same as the 3357/3457 but last longer.
The numbers dont relate to color the NA does. Na is amber type color.



I usually ran 3357/3457 NA LL's but over a 2-5 month span the amber coating seems to melt off then they look like crap.

Right now im running some ricer 3157 hyper whites since my buddy game em too me.

Next im gonna try some 4157NA's

smooth sierra

dunno. I know visually the element inside the bulb looks beefier. I was going thru the 3357/3457 bulbs pretty regularly when a guy at the auto parts store recommended I try the 4157. I guess he recognized me in there always buying bulbs. Like I said.....a little over 2 years since I had to pull the grill and change the bulbs.

As far as color.....I like the amber. It is different and GM puts the amber color bulbs in all the high performance cars for DRL's. F-bodies, vettes, etc. But to each his own.