Suzuki DF300B/DF325A/DF350A Thermostat (60°C) 17670-98L20

The Suzuki Thermostat 17670-98L20 is a genuine Suzuki OEM cooling system component designed for select high-horsepower four-stroke outboards. This 60°C (140°F) thermostat regulates coolant flow through the engine, helping maintain proper operating temperature and efficient cooling system performance.

This water thermostat is used on Suzuki DF300B, DF325A, and DF350A outboards. Replacing a worn or sticking thermostat helps maintain proper coolant circulation and supports reliable engine operation.

Compatible with the following:

• Suzuki DF300B (2018-Present)
• Suzuki DF325A (2018-Present)
• Suzuki DF350A (2017-Present)

Exact fitment can vary by engine model, model year, and serial number, so compatibility should be confirmed before ordering.

To Confirm Compatibility: Contact our team with your engine model and serial number before ordering. Call 727-596-5929 for assistance.