NGK Nickel Spark Plug Box of 4 (R5674-9)

The center electrode on these NGK R5674-9 spark plugs features special configurations designed for durability and ignitability, making them suitable for extreme racing conditions. They are built to withstand the most grueling racing environments, a testament to NGK's presence in racing venues worldwide.

These plugs utilize a pure alumina silicate ceramic insulator, which offers superior strength and improved heat transfer compared to standard materials. The trivalent metal plating on the exterior provides excellent resistance to corrosion and seizing, ensuring that installation and removal are straightforward, even after hard use. A copper core is integrated to help dissipate heat away from the combustion chamber, contributing to consistent performance.

Triple seals are incorporated to prevent any leakage, maintaining proper combustion pressure. While designed for extreme use, NGK standard plugs are generally constructed for longer life and optimum performance in their intended applications.