NGK R7437-10 4655 Spark Plug Racing R743710

The NGK R7437-10 4655 Spark Plug is engineered for high-performance racing applications, delivering consistent ignition and reliable power across demanding RPM ranges. Designed with a precision 14mm thread, durable electrode materials, and a tuned heat range, this plug promotes strong misfire resistance, efficient combustion, and improved throttle response. Ideal for tuned engines and competitive setups, it helps maximize horsepower while maintaining longevity under aggressive driving conditions. Each plug adheres to strict quality standards to ensure repeatable performance, easy installation, and dependable starts in both on-track and off-road environments.