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

Thermostat for Yamaha 222S 1800

This 140°F thermostat replaces the Yamaha OEM part 6D3-12411-00-00, regulating engine coolant temperature on the 2023 Yamaha 222S 1800 boat.

Overview

This thermostat for Yamaha 222S 1800 controls coolant flow to keep the engine at its designed 140°F operating temperature during every run. It installs as a direct replacement for OEM part 6D3-12411-00-00. A reliable thermostat for Yamaha 222S 1800 owners means consistent engine temps on the water.

Built For Performance

• 140°F opening temperature matches the factory specification
• Cross-references OEM part number 6D3-12411-00-00
• Constructed for marine cooling systems with constant temperature cycling
• Seals and seats to control coolant flow to the engine
• Direct-fit replacement for the original thermostat location

Fits These Machines

• for Yamaha 222S 1800, 2023

On-The-Job Use

• Routine cooling system maintenance on the 222S 1800
• Replacing a stuck or slow-opening thermostat
• Restoring stable engine operating temperature after overheating

Specs At A Glance

Good To Know

Q: Is this an original Yamaha part? A: No, it is an aftermarket thermostat that cross-references OEM number 6D3-12411-00-00. Always confirm the part number matches your engine before ordering.

Q: Why does the opening temperature matter? A: A thermostat rated at 140°F keeps the engine within its designed temperature range. A wrong rating can cause overheating or poor performance.

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