Our 'GEN-4' Power Cooler is the ultimate intercooler for the Sea-Doo 300 engine! Huge cooler core delivers excellent thermal efficiency and minimal pressure drops. Perfect for use in high boost supercharged and turbo applications. Precision machined billet water tanks hold up to high pressure cooling systems that can cause original coolers to fail. This is a high performance replacement for all Sea-Doo 300 applications. NOTE: Requires installation of RIVA Free Flow or Rear Exhaust Kit.