Aftermarket Thermostat for Yamaha F150, F175, F200, VF150 & VF175 Outboards – 60°C
Aftermarket Thermostat for Yamaha F150, F175, F200, VF150 & VF175 Outboards – 60°C is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Aftermarket Thermostat for Yamaha F150, F175, F200, VF150 & VF1...
Aftermarket Thermostat for Yamaha F150, F175, F200, VF150 & VF175 Outboards – 60°C is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket thermostat is designed for selected Yamaha 4-stroke outboard engines. It opens at approximately 60°C (140°F) to help regulate cooling-water flow and maintain the engine’s intended operating temperature.
The thermostat is listed as a replacement for Yamaha references 6DA-12411-01-00 and 6DA-12411-00-00. It is also cross-referenced with aftermarket part number Sierra 18-3636.
- Aftermarket replacement thermostat for selected Yamaha outboards.
- 60°C (140°F) opening temperature.
- Helps regulate cooling-water flow during engine operation.
- Verify the complete model designation and year before ordering.
Part Number Matrix
Use these references to compare the replacement thermostat with your original part and service documentation.
| Brand or Source | Part Number | Reference Type |
|---|---|---|
| Yamaha | 6DA-12411-01-00 | OEM reference |
| Yamaha | 6DA-12411-00-00 | OEM reference |
| Sierra | 18-3636 | Aftermarket cross-reference |
| Mercury Marine | 8M6010299 | Cross-reference listed in the product data |
Engine & Model Compatibility
The company fitment data identifies this thermostat for the Yamaha models and year ranges below. Model suffixes, shaft versions, and production details must match your engine before purchase.
| Brand | Model | Rated HP | Stroke | Applicable Years | Reference | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F150C, LF150C | 150 | 4-Stroke | 2017 | 6DA-12411-01-00 | Confirm the complete model designation. |
| Yamaha | VF150 | 150 | 4-Stroke | 2013–2017 | 6DA-12411-01-00 | VMAX SHO models. |
| Yamaha | VF150A | 150 | 4-Stroke | 2018 | 6DA-12411-01-00 | VMAX SHO model designation. |
| Yamaha | F175A | 175 | 4-Stroke | 2014–2018 | 6DA-12411-01-00 | Confirm the complete model designation. |
| Yamaha | F175C, LF175C | 175 | 4-Stroke | 2017 | 6DA-12411-01-00 | Confirm the complete model designation. |
| Yamaha | VF175 | 175 | 4-Stroke | 2015–2018 | 6DA-12411-01-00 | VMAX SHO models. |
| Yamaha | F200B, LF200B | 200 | 4-Stroke | 2012–2018 | 6DA-12411-00-00 | F200B model family. |
| Yamaha | F200C, LF200C | 200 | 4-Stroke | 2013–2018 | 6DA-12411-00-00 | Confirm the complete model designation. |
Technical Specs
- Product Type
- Outboard engine thermostat
- Product Configuration
- Single aftermarket thermostat; not a multi-piece kit
- Opening Temperature
- Approximately 60°C (140°F)
- Primary Application
- Selected Yamaha 4-stroke F150, F175, F200, VF150, and VF175 outboard models listed above
- Function
- Regulates cooling-water flow to help maintain the engine’s operating temperature
- Aftermarket Reference
- Sierra 18-3636
What’s in the Box
- 1 × aftermarket thermostat
A gasket is not listed as an included component. Replace the gasket or sealing components as required by the engine service manual.
Installation Notes
- Allow the engine to cool completely before beginning service.
- Disconnect the battery or follow the safety procedure specified in the engine service manual.
- Locate the thermostat housing and remove any components that obstruct access.
- Remove the housing cover carefully and note the original thermostat orientation.
- Remove the old thermostat and clean debris or corrosion from the mating surfaces.
- Install the replacement thermostat in the correct orientation.
- Install a suitable new gasket or sealing component as specified by the service manual.
- Reinstall the thermostat cover and tighten the fasteners to the manufacturer’s specified torque.
- Run the engine according to the service procedure and check for leaks or abnormal temperature indications.
Troubleshooting & FAQ
What does the thermostat do?
The thermostat controls cooling-water flow as the engine warms up, helping the outboard maintain its intended operating temperature.
What is the opening temperature?
This thermostat is specified to open at approximately 60°C (140°F).
Is this an OEM Yamaha thermostat?
No. This is an aftermarket replacement intended for engines that use the listed Yamaha references. Yamaha part numbers are provided for identification and compatibility checking only.
Is this a thermostat kit?
No. The company product record identifies this item as a single thermostat. A gasket or additional installation hardware is not listed as included.
Will it fit an engine that is not listed?
Do not assume compatibility from horsepower alone. Confirm the full Yamaha model designation, year, stroke, and thermostat reference against your service manual before ordering.
How often should the thermostat be replaced?
Inspect the thermostat during scheduled service and replace it if it is sticking, corroded, damaged, or associated with abnormal engine-temperature behavior. Follow the maintenance schedule for your specific engine.
Safety & Important Information
- Work only on a fully cooled engine and follow the manufacturer’s service procedures.
- Verify the complete model designation and reference number before purchase.
- This is an aftermarket replacement, not an OEM Yamaha component.
- Professional installation is recommended if you are not familiar with outboard cooling-system service.
About Sea Sierra
- Marine Replacement Parts — Parts selected for common outboard repair and maintenance applications.
- Fitment-Focused Listings — Model, year, horsepower, and stroke details are provided to support compatibility checks.
- Practical Support — Compare the original part and consult your service manual before installation.
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