89216-130-690 Spark Plug Wrench - Overview. The 89216-130-690 Spark Plug Wrench is a specialized tool designed to support the ignition system within Honda marine engine systems. This wrench facilitates secure gripping and turning of spark plugs, making spark plug installation and removal more efficient and reliable. Essential for routine maintenance and repairs, it ensures your marine engine runs smoothly and avoids complications related to improper spark plug handling. Designed specifically for