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Thread: what plugs for stock '02 z28 A4
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06-27-2009, 05:50 PM #1
what plugs for stock '02 z28 A4
I just confimed the brand of plugs that I'm removing the are Denso Iridium here is the # thats on the plug PTJ16R15 and it say's there pre gapped at.060 they look a litle worn. and like i stated before i still need to replace the other 3 plugs and wires.
The plugs that i'm installing are OEM ACDelco Spark Plug
Part No. 41-985
IRIDIUM; @ GAP .040
Why so big of a differance in gap It seems since my car is bone stock I should use the ac delco. any thoughts Thanks to all for help
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