Up for sale is NGK 3230 BR9EG RACING PLUG (REMOVABLE TERMINAL NUT) 3230. The vendor part number is 3230. Please read title to know what you are getting. The catalog decription.... is Ngk Racing series plugs are engineered to withstand the harshest engine conditionsSpecial insulator nose configurations improve throttle responceCorrugated ribs prevent flashoverPure alumina silicate ceramic insulator provides superior strength and better heat transferCopper core aids in heat removalTriple seals prevent leakage