If you require the best in performance and the longest performance life, Platinum+4 is the spark plug for you. Platinum+4's unique revolutionary firing technology combines the advantages of surface air gap technology, four ground electrodes, and a heat-fused center electrode with more pure platinum, creating the most powerful spark you can buy. Four ground electrodes provide multiple spark paths which allow the spark to travel the most efficient path and deliver a longer and more powerful spark than conventional single electrode spark plugs. This offers superior burn characteristics for ultimate engine performance.