Seller notes

(1) NGK B9EG SPARK PLUG DESCRIPTIONNGK Racing Series plugs are engineered to withstand the harshest engine conditions. Special insulator nose configurations improve throttle response. Corrugated ribs prevent flashover. Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer. Copper core aids in heat removal. Triple seals prevent leakage.PRODUCT SPECIFICATIONSShellThread Diameter14mmThread Pitch1.25mmSeat TypeGasketReach19mm (3/4")Hex Size13/16" (21mm)Terminal...

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