NGK Racing Series plug engineered to withstand harsh engine conditions. Special insulator nose configuration improves throttle response; corrugated ribs prevent flashover. Pure alumina silicate ceramic insulator provides superior strength and better heat transfer, with a copper core to aid heat removal and triple seals to prevent leakage.
Sold 4 to a case (purchase in increments of 4 to receive a full case). This is the standard spark plug for the KA100 and X30 in most series.
