The Autolite APP3924 Double Platinum Spark Plug features platinum-to-platinum firing. Virtually eliminates gap erosion reduces misfires and provides improved durability. It s the superior-performing spark plug providing preferred technology for DIS engines. Guaranteed for five 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.