I think the plugs your talking about are halo plugs. I've heard of em for a while. These have just 1 single sparking element with no halo ground or anything. I'm trying to get the pics from my friend to show you guys.Bang&Olufsen DK said:that seems to be the new thing in my auto mechanics class. everybody with a car has done plug change (most of them did not need to be changed) and gone with BOSCH Platinum +4 plugs these are no gap. has 4 conducters reaching from the outer rim. by all accounts everycar they were put has gained a little more pep and less fuel consumption was recorded. i plan on going with these when i pull my head gasket off.