6D3-12411-00-00 Thermostat 140°F for Yamaha AR 195 1800 2017-2026

Thermostat for Yamaha AR 195 1800

This replacement thermostat for Yamaha marine engines, OEM cross-reference 6D3-12411-00-00, opens at 140°F to regulate coolant flow and maintain stable operating temperatures.

Overview

This 140°F thermostat is a direct-fit replacement for Yamaha AR 195 1800 applications, cross-referenced to OEM part number 6D3-12411-00-00. The thermostat for Yamaha jet boats manages coolant circulation so the engine warms up properly and holds its designed temperature range. It suits owners servicing 2017 through 2026 models.

Built For Performance

• 140°F opening temperature matched to the original specification
• OEM cross-reference 6D3-12411-00-00 for straightforward replacement
• Wax-pellet design responds quickly to coolant temperature changes
• Sealing flange helps prevent bypass leaks when closed
• Suited to marine cooling systems exposed to constant load and heat cycling

Fits These Machines

• for Yamaha AR 195 1800, 2017-2026

On-The-Job Use

• Routine cooling system maintenance and seasonal service
• Replacing a thermostat stuck open or stuck closed
• Overheating diagnosis on jet boat engines
• Pre-season preparation before launching

Specs At A Glance

Good To Know

Q: How do I know if my thermostat needs replacing? A: Common signs include the engine running cold, overheating, or taking too long to reach normal temperature. A thermostat stuck open or closed is the usual cause on marine engines.

Q: Is this an original Yamaha part? A: This is an aftermarket thermostat cross-referenced to OEM number 6D3-12411-00-00, not an original brand product. Confirm the part number matches your application 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.