Sierra 18-3549 Marine Engine Thermostat 120 Degree

The Sierra 18-3549 is a precision-engineered marine thermostat designed to regulate engine cooling systems at 120 degrees Fahrenheit. This replacement thermostat is manufactured to meet or exceed OEM specifications, ensuring reliable temperature control for optimal engine performance and longevity.

Key Features:

• 120°F opening temperature for precise cooling system regulation
• Marine-grade construction for corrosion resistance in saltwater and freshwater environments
• Direct replacement for Mercury Marine and Sears marine engines
• Engineered to OEM specifications for proper fit and function
• Helps maintain optimal engine operating temperature and fuel efficiency

Regular thermostat replacement is essential for preventing engine overheating and maintaining proper cooling system function. The Sierra 18-3549 provides dependable temperature regulation to protect your marine engine investment.