I recently came across this CDI switch box, and it’s a lifesaver for anyone running an older Mercury or Mariner outboard. It fits a wide range of motors from 6HP all the way up to 40HP, making it a versatile component for your boat’s ignition system. The build quality is impressive for the price, providing a cost-effective alternative to expensive OEM parts without sacrificing engine reliability. If your motor has been struggling with spark issues, this power pack is exactly the kind of simple, effective upgrade you need to get back on the water.