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Light bulb part number

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Old 08-18-2006, 04:58 PM
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Default Light bulb part number

I feel like such a noob asking this

I think the part number for the 3rd brake light bulb is either 920 or 921 bulb...well NO ONE has the correct one..they carry the number above it and below it.

What is the correct size bulb
Old 08-18-2006, 05:30 PM
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Yes it's a 921, GM#12450313.
Old 08-18-2006, 05:50 PM
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Ok, Pep Boys, Autozone etc don't carry 921's. Is there any other bulb that works?
Old 08-18-2006, 08:01 PM
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I've bought 921s before, do you have a Murray's in your area? I'm sure that's where I bought it, I usually go there for everything. I beleive what they had was a 921LL (long life).
Old 08-18-2006, 09:45 PM
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Nope, none of those.

Oh well I'll keep trying other places. It's pissing me off lol
Old 08-18-2006, 09:59 PM
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I've had to use a 912 in a 921 spot before with no probs, same thing as using a 3157 instead of a 4157. Should work fine.




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