Step up to platinum. A center wire platinum firing tip provides improved performance and durability. They fire quicker and cleaner with less voltage for easier starts quicker acceleration and improved fuel economy versus standard plugs. The Autolite AP5224 Platinum Spark Plug provides reduced gap erosion and fewer misfires and features a limited 4 year warranty. Since 1936 Autolite has been a trusted leader and innovator in spark plug technology. 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.