Welcome to Defender Canada! 
Sierra Yamaha Thermostat - 18-3524 Item # 1780926
Description
Specifications:
- Temperature Rating: 60°C/140°F
Fits:
- F225/LF225 (2010-22)
- F250/LF250 (2010-24)
- F300/LF300 (2010-24)
- VF200/250 (2015-24)
Replaces:
- Yamaha Outboard:
- 6CE-12411-00-00