3X longer service life compared to standard copper plugs Bosch Double Platinum spark plugs are engineered to extend performance life and durability. The fine wire design of the center electrode improves ignitability and performance in your engine while the platinum tip on both the center and ground electrodes ensure longer life. All backed by a 6-year performance satisfaction guarantee. Center Electrode Core Material: Nickel-Yttrium and Copper and Platinum - Center Electrode Tip Material: Platinum - Ground Electrode Tip Material: Nickel-Yttrium and Platinum Product Features:OE design for optimum fit and functionFine wire design delivers improved ignitability and performance lifeCenter electrode is an ultra fine wire design.Copper core provides broader heat range to resist pre-ignitionTapered shape ground electrode reduces flame shrouding for improved combustionYttrium enhanced to resist wearNickel-plated shell with rolled threadsRibbed insulator design
