Doug..I believe you're describing a plug I've never seen before....can you post a few closeup pix? Just curious...are these better performers than the stock R45TS plugs?o No: Wheelz, Tampa Bay
wheels the rings are on the top of the porcelin and there is one wide green ring and 3 narrow green rings below it. i can get another pic. AC stopped putting the rings on the plugs years ago, thats one way you can tell the older plugs. they are just a stock plug they are no better than the ones you can buy at the parts store but to be period correct they need to have the rings.
