Upgrade your boat's cooling system with this high-quality thermostat kit from Sierra. Designed for use with OMC Cobra Sterndrive engines, this kit includes a thermostat and all necessary hardware for easy installation. With a temperature rating of 160°F / 71°C, this thermostat is perfect for keeping your engine running smoothly and efficiently. This kit is a great replacement for your old or damaged thermostat, ensuring that your boat stays cool and comfortable during operation. Plus, with a manufacturer part number of 18-3677, you can trust that this thermostat is made to last. Don't let a faulty thermostat hold you back - upgrade to this Sierra thermostat kit today.