3 x spark plugs
 

Hello, I purchased some boxes of model A parts, And included were four 3 x champion spark plugs still in the boxes and rapped in the wax type paper. They look like Nos. I know that these are now being reproduced and are very authentic to the originals. Just wanting to know if there is a way to tell originals from the after markets. Thank you. ..Mike

Re: 3 x spark plugs
 

Re: 3 x spark plugs
 

Is the 3 round at top or flat? just one example.

Re: 3 x spark plugs
 

I have reproductions with the round 3

Re: 3 x spark plugs
 

Only originals had round 3 at top of the 3

Re: 3 x spark plugs
 

Could you please post a picture of one of the reproductions with the round 3?

Re: 3 x spark plugs
 

Reproductions...aren't they all still made by Champion?

Re: 3 x spark plugs
 

These are reproduction the electrode goes all the way through the top

Re: 3 x spark plugs
 

Besides the 3, reproduction bases have a fine internal knurl with 2 unknurled bands.

Bases with the correct coarse knurl and no bands are available from the parts dealers.

Re: 3 x spark plugs
 

Here's a little trivia for you;

Ever notice on the BOX of a NOS 3X spark plug the "3" has a flat top while on the Repro BOX the "3" has a round top? The opposite what the plugs have. Weird, eh?

https://live.staticflickr.com/65535/...4ec4d35339.jpg

Re: 3 x spark plugs
 

Hi Gary:

Great source of infomation for owners of our beloved "A"'s.
Thanks for sharing.