Autolite Xtreme Performance Iridium Spark Plugs are technologically advanced, with an iridium-enhanced 0. 6finewire design and proprietary platinum sidewire technology working to provide better durability and a more focused ignition for better overall ignitability and optimum performance. These premium spark plugs also feature an iridium-enhanced center electrode and nickel-plated shell. Guaranteed for 7 years. Model # XP5684 Features: Iridium-enhanced platinum alloy 0. 6mm finewire center electrode for improved ignitibility performance Patented V-trimmed platinum sidewire technology resists wear OE equivalent design is engineered for every engine to ensure the right plug for your vehicle Designed for better overall durability with virtually no gerosion for longer plug life Attached motor seat gasket and terminal nut.
