Recmar Yamaha F80 F100 Thermostat 55C 6D9-12411-00
REC6D9-12411-00
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Recmar Yamaha 6D9-12411-00 Thermostat
55°C aftermarket cooling thermostat for selected F80 and F100 outboards
RECMAR aftermarket thermostat corresponding to Yamaha 6D9-12411-00. It is primarily used on selected F80 and F100 four-stroke families, including F80B and F100D applications where that exact reference appears in the cooling-system diagram.
Key Features
- RECMAR aftermarket replacement; not genuine Yamaha
- 55°C nominal opening temperature
- Direct reference replacement for 6D9-12411-00
- Selected Yamaha F80/F100 four-stroke applications
- Designed for raw-water marine cooling systems
- One thermostat supplied
Technical Specs
| Part type | Engine thermostat |
| Opening temperature | 55°C nominal |
| Engine type | Selected Yamaha four-stroke outboards |
| Supply | 1 thermostat |
| 4Boats SKU | REC6D9-12411-00 |
Confirmed Compatibility
| Exact Yamaha engine application | Years / model range |
|---|---|
| F80A / F80B FourStroke | Applications in the 2005–2017 family specifying 6D9-12411-00 |
| F100A / F100B / F100D / F100DET FourStroke | F100DET 2005–2014 |
| F100L / F100X FourStroke | 2015–2017 |
Part Number Cross Reference
| Yamaha OEM | 6D9-12411-00; 6D9-12411-00-00 |
| RECMAR / 4Boats | REC6D9-12411-00 |
| Alternate format | 6D91241100 |
Frequently Asked Questions
What is the opening temperature?
The nominal calibration is 55°C.
Will it fit an F100G?
Do not assume so; later F100G applications commonly use 6FP-12411-00. Check the engine catalogue.
Is it genuine Yamaha?
No. It is an aftermarket RECMAR replacement.
Should the seal be reused?
Best practice is to inspect and replace any flattened, hardened or damaged seal.
Installation note: Allow the engine to cool, renew any disturbed seal or gasket where required, and follow the engine manufacturer's service procedure. After installation, run the engine and check for leaks and correct cooling-water flow.
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