Which plugs do I have?

Wanted to change my plugs but how do I tell what I got?
The just say Autolite 104 on them.

Wanted to put the same ones back in.
Which pn are they any ideas?

Thanks
John

John,

104's are two ranges colder than stock (stock would be Autolite 106). I've always run the 104 with boost. Make sure they are standard copper core and not 104 Platinum. Gap 0.035".

Regards,
Scott.

Scott thanks!
Do you have a part # for me ;) Is it the .706 reach?

Thanks again