6D3-12411-00-00 Thermostat 140°F for Yamaha AR 220 1050 2022-2026

Thermostat for Yamaha

This 140°F thermostat, cross-referenced as OEM 6D3-12411-00-00, regulates coolant flow on your personal watercraft engine to keep operating temperatures steady.

Overview

The 140°F thermostat for Yamaha is a direct-fit replacement for the AR 220 with the 1050 engine. This thermostat for Yamaha controls coolant circulation so the engine reaches and holds its intended running temperature. It suits riders replacing a worn or stuck thermostat on a 2022 to 2026 AR 220.

Built For Performance

• 140°F opening temperature matches the factory specification for the 1050 engine
• Cross-references OEM part number 6D3-12411-00-00 for easy verification
• Sealed housing design supports consistent coolant flow regulation
• Built to withstand continuous marine cooling system exposure
• Compact form that seats in the thermostat housing without modification

Fits These Machines

• for Yamaha AR 220 1050, 2022
• for Yamaha AR 220 1050, 2023
• for Yamaha AR 220 1050, 2024
• for Yamaha AR 220 1050, 2025
• for Yamaha AR 220 1050, 2026

On-The-Job Use

• Replacing a thermostat that sticks open and keeps the engine running cold
• Cooling system service when the engine overheats or warms up slowly
• Routine cooling system restoration before the riding season begins
• Freshwater and saltwater personal watercraft use

Specs At A Glance

Good To Know

Q: How do I know this thermostat fits my AR 220? A: It is listed for the 1050 engine across 2022 to 2026 AR 220 models with OEM cross-reference 6D3-12411-00-00. Check your serial number and existing part number before ordering.

Q: What are signs the thermostat needs replacing? A: An engine that runs cold, warms up slowly, or overheats can point to a thermostat stuck open or closed. Replacing it with a 140°F unit restores normal coolant regulation.

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