The NGK 5657 Racing Plug - R5674-8, part of NGK's Racing Series, is engineered to excel under the most demanding engine environments. It incorporates special insulator nose configurations that enhance throttle response, ensuring precise engine performance. Corrugated ribs are integrated to prevent electrical flashover, maintaining consistent ignition efficiency. The spark plug's pure alumina silicate ceramic insulator provides exceptional strength and optimal heat transfer, complemented by a copper core that aids in efficient heat dissipation. With triple seals to prevent leakage, this plug delivers reliable performance and durability, making it ideal for high-performance racing applications.

Part number: R5674-8