Autolite XP646 Iridium XP Spark Plug
Autolite Xtreme Performance Iridium Spark Plugs are technologically advanced, with an iridium-enhanced 0.6 mm finewire 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.
