I have heard other people commenting (not on YT) that the NGKs don't go into the plastic sheaths well. Can anyone comment on that?

 

Forgive my ignorance but doesn't NGK make the stock wires?

Fink

 

I believe so

and the above mention on NGK not fitting in to the rubber boot, I just replaced my plugs a few months ago with NGK and I haven't had this problem, at least no to my knowledge. Everything in running just fine

 

I believe the stock wire sets are Denso made.

 

I believe my wires are original and they say Sumitomo on them.

 

This.



Sumitomo makes the OEM plug wires and if you look closely, you will see they are date stamped

 

In a 3.4L? or 3.slow?