This product has been superseded by: 6DA-12411-01-00

Yamaha Thermostat | 6DA-12411-00-00

Overview

The Yamaha Thermostat 6DA-12411-00-00 is a genuine original equipment manufacturer component designed to regulate engine temperature and maintain proper cooling system performance. The thermostat automatically controls the flow of cooling water through the engine, helping ensure the engine reaches and maintains its optimal operating temperature.

A properly functioning thermostat is essential for efficient engine operation. If a thermostat becomes stuck open or closed due to wear, corrosion, or debris, it can cause the engine to run too cold or overheat. Replacing a worn thermostat with a genuine Yamaha component helps maintain correct temperature regulation, protects internal engine components, and supports reliable performance on the water.

Key Features

• Genuine Yamaha Original Equipment Manufacturer Component – Manufactured to Yamaha factory specifications for precise fit and dependable performance.

• Regulates Engine Temperature – Controls water flow within the cooling system to maintain optimal operating temperature.

• Precision Engineered Design – Ensures consistent opening and closing at the correct temperature range.

• Durable Marine Construction – Built to withstand heat, water exposure, and demanding marine conditions.

Compatibility

Compatible with select Yamaha outboard engines that utilize this thermostat within the engine cooling system.

Why is this prop a strong choice vs. alternatives?

• Original Equipment Manufacturer Yamaha Fitment – Designed specifically for Yamaha cooling system performance.

• Maintains Proper Engine Temperature – Helps prevent overheating and supports efficient engine operation.

• Restores Cooling System Reliability – Ideal replacement for worn or malfunctioning thermostats.

• Built for Marine Durability – Engineered to handle heat, pressure, and continuous engine use.

Frequently Asked Questions

Q: What does a thermostat do in an outboard engine?
A: A thermostat regulates the flow of cooling water through the engine to maintain the correct operating temperature.

Q: What happens if the thermostat fails?
A: A failed thermostat can cause the engine to overheat or run too cool, which can affect performance and efficiency.

Q: Is this a genuine Yamaha component?
A: Yes. The 6DA-12411-00-00 is a genuine Yamaha original equipment manufacturer thermostat.

Q: When should a thermostat be replaced?
A: Replacement is recommended if the thermostat shows signs of corrosion, sticking, or inconsistent temperature regulation.

Q: Can this part be installed by a boat owner?
A: Many mechanically inclined owners can install a thermostat, though professional service may be recommended during cooling system maintenance.

• Supersessions
  6DA-12411-01-00, 6DA-12411-01-00