THERMOSTAT 6D9-12411-00 For YAMAHA F100D Outboard Motor 6D9-12411

Thermostat for Yamaha

This thermostat, cross-referenced as 6D9-12411-00 and 6D9-12411, helps regulate cooling flow for Yamaha F100D outboard motors.

Overview

This thermostat for Yamaha F100D outboard motors controls coolant flow to maintain proper engine temperature. A quality thermostat helps the cooling system warm up quickly and stay stable under load, making it an important part of routine outboard maintenance.

Built For Performance

• Direct replacement design for Yamaha F100D outboard cooling systems
• Cross-references original part numbers 6D9-12411-00 and 6D9-12411
• Constructed to withstand marine cooling system conditions
• Helps maintain consistent engine operating temperature
• Plays a key role in preventing overheating and efficient warm-up

Fits These Machines

• for Yamaha F100D

On-The-Job Use

• Replacing a worn or stuck closed thermostat during outboard cooling system service
• Restoring proper warm-up behavior for Yamaha F100D outboards
• Supporting routine cooling system maintenance for Yamaha F100D outboards
• Used by mechanics and boat owners when servicing the powerhead

Specs At A Glance

Good To Know

Q: How does a stuck thermostat affect an outboard? A: A stuck thermostat can cause slow warm-up, overheating, or unstable engine temperature. Replacing it helps the cooling system regulate properly.

Q: Does this thermostat fit additional outboard models? A: Fitment may vary by serial number and cooling system design. Confirm compatibility before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.