NGK R7436-9 4899 Spark Plug Racing R74369

The NGK R7436-9 4899 Spark Plug Racing R74369 is engineered for high-performance ignition in demanding racing applications. Built with precision 14mm threads, this plug delivers consistent, rapid combustion and reliable starts across intense engine cycles. Its robust construction enhances durability under extreme heat and pressure, while offering a stable spark delivery that helps maximize horsepower and throttle response. Ideal for tuned engines requiring a dependable, race-proven plug, the R7436-9 balances heat management with efficient fuel burn, reducing misfires and fouling in high-boost environments. Whether competing on the track or dialing in a performance setup, these plugs help maintain peak performance, contributing to smoother idle, quicker acceleration, and improved overall engine efficiency.