Recmar Yanmar 2YM15 3YM20 3YM30 Thermostat 71°C 128990-49800
REC128990-49800
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Regular price£19.11
/
Tax included.
Yanmar 2YM / 3YM Thermostat
71°C | Replaces 128990-49800
Aftermarket 71°C thermostat for Yanmar 2YM15 and 3YM-series marine diesels using reference 128990-49800.
FITMENT CHECK: Confirmed on the fresh-water cooling circuit. Match the exact model and OEM number; raw-water thermostat components are separate.
Key Features
- 71°C opening temperature
- For Yanmar 2YM15 and 3YM family
- Marine fresh-water cooling thermostat
- Replaces 128990-49800
- Recmar aftermarket replacement
Technical Specs
| Part type | Coolant thermostat |
| Temperature | 71°C |
| Approx. dimensions | 44mm diameter; 57.5mm overall height (reference data) |
| Engine family | 2YM / 3YM |
| SKU | REC128990-49800 |
Compatibility / Fitment Guide
| Engine family | Verified models | Notes |
|---|---|---|
| 2YM15 | Fresh-water-cooled 2YM15 installations using 128990-49800 | Confirm serial. |
| 3YM20 | Applicable 3YM20 variants | Check full suffix. |
| 3YM27A / 3YM30 | 3YM27A, 3YM30, 3YM30AE and selected 3YM30R variants | Use parts-book reference. |
| Exclusion | GM-series engines using 121750-49800 | Different family. |
Confirm the complete model suffix, serial number, temperature specification and OEM reference.
Part Number Cross Reference
| Yanmar | 128990-49800 |
| 4Boats SKU | REC128990-49800 |
Recmar aftermarket replacement; Yanmar references identify fitment only.
Frequently Asked Questions
What temperature is it?
71°C.
Does it fit 3GM30F?
No; that GM-series engine uses a different thermostat family.
Will it fit 3YM30AE?
Yes when the parts book lists 128990-49800.
Installation note: Fit the specified new gasket/seal, bleed the cooling circuit where required and check operating temperature.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
