143°F 62°C Thermostat for Yamaha 9.9 - 55 HP 6F5-12411-01 6F5-12411-02 18-3625

Thermostat for Yamaha

This 143°F (62°C) thermostat, with OEM cross-reference numbers 6F5-12411-01 and 6F5-12411-02, regulates engine temperature for Yamaha outboards from 9.9 to 55 HP.

Overview

This thermostat maintains optimal engine temperature by controlling coolant flow. Designed for Yamaha outboard motors, it opens at 143°F (62°C) to ensure efficient operation. It replaces original part numbers 6F5-12411-01, 6F5-12411-02, and cross-reference 18-3625.

Built For Performance

• Opens at 143°F (62°C) to promote quick warm-up and stable running
• Precision-engineered to match OEM specifications
• Constructed from durable materials for long service life
• Direct replacement for Yamaha outboard thermostats
• Ensures proper cooling system pressure and flow

On-The-Job Use

• Maintaining correct engine temperature during operation
• Preventing overheating in Yamaha outboards
• Replacing a faulty thermostat during routine maintenance
• Optimizing fuel efficiency and engine performance

Specs At A Glance

Good To Know

Q: Is this thermostat compatible with my Yamaha outboard? A: It fits Yamaha outboards from 9.9 to 55 HP, but always check your engine's serial number to confirm fitment.

Q: What is the function of this thermostat? A: It regulates coolant flow to keep the engine at its optimal operating temperature, preventing overheating and ensuring smooth performance.

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