The Autolite XP6203 Iridium XP Spark Plug is one of Autolite s most technologically advanced spark plugs ever. With an iridium-enhanced 0.6 mm finewire design and proprietary platinum sidewire technology Autolite Iridium XP Spark Plugs provide better durability and a more focused ignition for better overall ignitability and optimum performance. Guaranteed for seven years. Autolite makes plugs for American Japanese European and Korean cars as well as plugs for Lawn & Garden and Power Sports. As a leading supplier of spark plugs the Autolite brand has the right ignition products for your application regardless of make or model import or domestic.