Electrode smaller in size. Missing identification stamped on center ring. Noticed after plugs began misfiring, aprx 7,000 miles. Purchased from
Rosebud Gadgets and Gifts, top rated seller on Ebay. I have photos, still have the plugs. Won't let me upload photos. I paid with an Azulos card,not on the list. They can track purchases though, linked to an account and routing number.