There are counterfeit NGK plugs circulating. Not sure how to check for origin on them but I bet that's what you have there.
Some of the larger chain parts stores buy plugs from some jobbers that sell the counterfeit junk
That is the last thing we need. Real businesses buying conterfeit parts and selling them to us.
It is bad enough that illegal crap manf exist in the first place.
Just trying to change spark plugs turns into a nightmare....
It would be nice if somebody knows how to spot them, if possible.
