The spark plugs of the NGK IX Iridium series were specially designed for drivers who demand enhanced performance from their vehicle. The very thin center electrode ensures high durability and a consistent, stable spark. The iridium alloy has an exceptionally high melting point, making it ideal for today’s high-tech, high-performance engines. At the same time, the trivalent metal coating provides superior anti-corrosion protection properties. The integrated copper core helps effectively dissipate heat, while the special insulating coating offers superior durability and optimal heat transfer. Finally, the triple insulation effectively prevents leakage, keeping performance at its maximum.