Spark plug cap and plug cap mount structure

摘要

There is provided a plug cap for electrically connecting a high-tension cord to a spark plug fixed to an internal combustion engine. The plug cap includes an electrical connection member capable of making an electrical connection between the spark plug and the high-tension cord, a resin molded member covering at least part of an outer circumferential surface of the electrical connection member and a cover member covering at least an outer circumferential surface of the resin molded member and formed of an elastic rubber material softer than a resin material of the resin molded member. The resin molded member has a protruding portion radially outwardly extending in at least one direction. The cover member covers the protruding portion of the resin molded member in such a manner that at least part of the protruding portion is engaged with a cap mounting portion of the engine via the cover member.