An outboard engine performs at its best when it runs at the right temperature—not too hot, not too cold. The Suzuki Thermostat (17670-91J11) is designed to regulate your engine’s cooling system, keeping it within the ideal operating range of 50°C. If your engine struggles with overheating or fluctuating temperatures, this OEM thermostat ensures consistent heat management, protecting vital components from unnecessary wear and tear.

Engineered specifically for Suzuki DF4 and DF6 models (2005-2010), this direct-fit replacement restores factory-level performance. Constructed from high-quality, corrosion-resistant materials, it holds up against constant exposure to water, heat, and pressure. A failing thermostat can lead to fuel inefficiency, reduced power, and even engine failure—swapping it out as part of routine maintenance is a simple way to keep your outboard running strong.

Why This Part Matters:

• Prevents Overheating & Cold Running – Maintains proper engine temperature for peak performance.
• OEM Fit & Durability – Genuine Suzuki part ensures seamless integration and long-term reliability.
• Optimizes Fuel Combustion – Helps improve efficiency and reduce strain on engine components.
• Essential for Maintenance – A must-have replacement if temperature fluctuations arise.

An outboard that’s running too hot or too cold can lead to big problems down the line. Replacing a worn thermostat with a genuine Suzuki part keeps your engine running smoothly, season after season.