R35 NGK Heat Range 9 Spark Plug (R2558E-9)

What we use and recommend on upgraded turbo cars that make below 1700WHP

NGK 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