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Discussion Starter #1
i know this has been talked about a bunch but i see everyone saying the ACDelco Professional Iridium Spark Plug Part No. 41-103 dont need to be gaped but advanced auto say they do to .043
2010 Chevrolet Colorado LT
Professional; Iridium; Gap .043; 5 Req.


am i reading something wrong? sorry if i opening up another drawn out thread but i just want to double check.
thanks
 

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Should be pre gapped. Gaping them could damage them.
 

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US Army 19yrs and ......
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^^ yup

I prefer the Denso's, but a double tap on the do not gap them. I tried on a spare plug once.......don't do it unless you want to buy another plug
 

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Discussion Starter #4
Thanks guys. Just wanted to double check before doing it
 
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