I've known that for years. Were oem not fakes. But ya NGK makes them all over the place for years now. Nothing new there.
List is very long too where they make them. https://ngksparkplugs.com/en/about-us/our-story
I had bad batches of Japan all the way back to 2012. = Back in June 2012 I had trouble with a like new NGK plug (more on that one below). Well today Sept 23 2012 another newer NGK plug failed in a partner 5000 of mine and showed the same symptoms I had in my 362xp except 5000 would just pop crackle and shut off.
I'm using Denso now.
