I think I have gotten fake ngk plugs. Napa auto parts store order it for me because they do not stock them. #96779. 4 letter on the plug do not end in Hex letter first. The letter is " M8Y9". I even went to advanced, auto zone,and O'Reilly none of them ended with H letter.
Isn't letter suppose to start with H?
Isn't letter suppose to start with H?