Do you know what plug-hole reach that is classed as?
I mean, almost any of the dozens of used plugs I have match the hole diameter/thread...but none I have match the thread-reach..
so I don't want unoccupied threads on either hole or plug..
I saw some listed on ebay .Chinese brand such as A7 TC which are listed for scooters and wtf else, but look possibly right reach/thread length..
But I'd prefer not to use Chinese plugs but rather work out an NGK part number for a compatible one..
