The most platinum with four yttrium-enhanced ground electrodes and the most powerful spark. If you require the best in platinum performance over the longest service 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 yttrium-enhanced ground electrodes, and a heat-fused center electrode with the most platinum, creating the most powerful spark you can buy. Center Electrode Core Material: Nickel-Yttrium and Copper and Platinum - Center Electrode Tip Material: Platinum - Ground Electrode Tip Material: Nickel-Yttrium Product Features:OE design for optimum fit and functionRevolutionary surface air gap firing technology featuring multiple spark pathsMore platinum versus Bosch Platinum PlusFour yttrium-enhanced ground electrodes
