Keeping an outboard running at the right temperature isn’t just about performance—it’s about longevity. The Mercury Thermostat (8M0168892) plays a critical role in regulating engine heat, ensuring optimal combustion and preventing dangerous overheating. A failing thermostat can cause erratic temperature swings, leading to sluggish throttle response, excessive wear, and potential long-term damage. Upgrading to this genuine Mercury OEM part restores proper coolant flow, helping your engine run more efficiently and extending its lifespan.

Built for Reliable Heat Management:

• OEM-Exact Fit – Designed to Mercury’s specifications for precise function and easy installation.
• Consistent Cooling Control – Regulates coolant flow to maintain steady operating temperatures.
• Corrosion-Resistant Durability – Engineered to withstand exposure to high heat, moisture, and saltwater.

Ideal for:

• Preventing overheating and protecting vital engine components.
• Improving fuel efficiency by ensuring proper combustion temperatures.
• Replacing a failing thermostat to restore smooth, consistent performance.

An unreliable thermostat can lead to bigger problems down the line. Swapping in a Mercury Thermostat (8M0168892) keeps your engine running cool, efficient, and ready for every trip out on the water.