Is your Johnson or Evinrude outboard running rough, losing power, or hard to start? A worn-out ignition coil could be the culprit. This set of 4 replacement coils from AA Ignition is made to bring your motor back to life. It fits a huge range of 2-stroke, carbureted models from 4 HP all the way up to 300 HP, covering years from about 1985 to 2001. The set replaces common OEM numbers like 582508, 183-2508, and 18-5179. These coils are built to handle the heat and vibration of marine use. Installation is pretty straightforward if you're handy. The company is based in the USA and has ASE-certified techs available if you need help. A reliable fix to get you back on the water with full power.