NGK (4344) (4344) LTR5IX-11 Iridium IX Spark Plug, (Pack of 1), Pack of 1 You can depend on NGK for quality and reliability Constructed from durable material Fine Iridium tip ensures high durability Features superior anti-corrosion and anti-seizing properties Iridium alloy has extremely high melting point, perfect for todays high-tech, high-performance engines