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Gapping spark plugs for JB4

mitep

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Nov 8, 2025
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I got the HKS M45IL spark plugs that I saw as being a need from most posts. I had also heard that they need to be gapped to .022 I believe. Right on the box it says to not adjust the gap. Do they already come at .022 or do I just ignore that message?
 
Yup you'll just need to ignore the instructions on the box, they won't be pre-gapped at what you need. When I did mine they were all well above .022.
 
They are supposed to come pre-gapped to .028 but its best to check on the gap to make sure. You don't need to make any changes to it besides the way that it comes from the factory.

If anyone else needs to pick up some plugs for their car, we have the plugs available (HERE).
 
Kia Stinger
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