6D3-12411-00-00 Thermostat 140°F for Yamaha 222SD 1800 2023

Thermostat for Yamaha 222SD 1800

This 140°F thermostat keeps the engine on your Yamaha 222SD 1800 running at the proper operating temperature, with an OEM cross-reference of 6D3-12411-00-00 for straightforward replacement.

Overview

This thermostat is a direct-fit temperature control component for the Yamaha 222SD 1800, regulating coolant flow so the engine reaches and holds its intended 140°F operating range. Built to OEM dimensions, this 140°F thermostat works with the 6D3-12411-00-00 reference to restore consistent cooling performance. It suits owners performing routine maintenance or replacing a stuck or failed thermostat.

Built For Performance

• 140°F opening temperature matched to the Yamaha 1800 engine specification
• Cross-references OEM part number 6D3-12411-00-00
• Wax-pellet design opens and closes reliably as coolant temperature changes
• Sealed housing resists coolant degradation over time
• Direct-fit dimensions for the specified 1800 application

Fits These Machines

• for Yamaha 222SD 1800 (2023)

On-The-Job Use

• Routine cooling system maintenance on the 222SD 1800
• Replacing a thermostat stuck open or closed
• Restoring stable engine operating temperature after overheating issues

Specs At A Glance

Good To Know

Q: How do I know if my thermostat needs replacing? A: Common signs on the 222SD 1800 include the engine running cold, overheating, or temperature fluctuating outside the normal range. Replacing the thermostat with the correct 6D3-12411-00-00 unit restores proper coolant regulation.

Q: Is this thermostat a genuine Yamaha part? A: This is an aftermarket thermostat made to cross-reference OEM part number 6D3-12411-00-00 and is not an original Yamaha product. Confirm your model and serial number 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.