NGK R7436-10 4900 Spark Plug Racing R743610

The NGK R7436-10 4900 Spark Plug is a high-performance racing plug engineered for demanding ignition tasks. With a 14mm threaded base and the proven R743610 designation, it delivers reliable spark delivery, quick cold starts, and strong flame transmission under high RPM. Constructed for durability, the plug features robust electrode construction and advanced insulator design to withstand racing heat and vibrations. Ideal for tuned engines seeking consistent ignition timing, improved throttle response, and sustained power output across competitive laps. Compatible with a range of race-applications and easy to install, it helps drivers push performance without sacrificing reliability. Note: choose the correct heat range for your engine to maximize efficiency.