This NGK spark plug is a high-quality replacement for marine engines made by Chrysler, Crusader, or Mercruiser. It is designed to ensure reliable ignition and starting systems for your inboard engine. The plug is made in Japan and has a manufacturer part number of 2623 BPR6FS. The brand of the spark plug is NGK, known for their durable and reliable products. This spark plug is compatible with various marine engines and is an essential component for your boat's ignition system. It is a great choice for those looking to replace their old or faulty spark plug.