6D3-12411-00-00 Thermostat 140°F for Yamaha 275SD 1800 2019-2026

Thermostat for Yamaha 275SD 1800

This 140°F thermostat for Yamaha 275SD 1800 replaces OEM part 6D3-12411-00-00 to regulate engine coolant temperature on 2019-2026 models.

Overview

This thermostat for Yamaha 275SD 1800 controls coolant flow to keep the 1800 engine at its intended 140°F operating temperature. It is a direct replacement for OEM part 6D3-12411-00-00 and suits owners performing routine cooling system service. Built to factory temperature spec, this thermostat for Yamaha 275SD 1800 helps maintain stable running conditions.

Built For Performance

• 140°F opening temperature matches the factory specification
• Cross-references OEM part 6D3-12411-00-00
• Regulates coolant flow to stabilize engine temperature
• Housing and seal designed for a direct fit
• Suited to marine cooling system service intervals

Fits These Machines

• for Yamaha 275SD 1800, 2019-2026

On-The-Job Use

• Routine cooling system maintenance
• Replacing a stuck or failed thermostat
• Overheating diagnosis and repair
• Seasonal engine service

Specs At A Glance

Good To Know

Q: Is this an original Yamaha part? A: No, this is an aftermarket thermostat for Yamaha applications that cross-references OEM number 6D3-12411-00-00.

Q: Does the temperature rating matter? A: Yes, using a thermostat with the wrong opening temperature can affect engine warm-up and cooling, so match the 140°F spec shown here.

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