The Autolite AP5144 Platinum Spark Plug provides a center wire platinum firing tip. Benefits include: reduced gap erosion fewer misfires better performance and more durability. Guaranteed for four 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.