Recmar Kohler Marine Generator Thermostat Kit 23-3666 195F
REC23-3666
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Kohler Generator Thermostat Kit
195°F kit – Sierra/Recmar 23-3666
Recmar/Sierra-reference thermostat kit for specified Kohler marine generator cooling systems. The kit corresponds to 23-3666 and cross-references Kohler 352018 and 352031.
Key Features
- 195°F thermostat application
- Cross-references Kohler 352018 and 352031
- For specified CFOZ, EFOZ, EOZ and COZ generator families
- Kit format with thermostat and associated gaskets/seals as supplied
- Aftermarket service replacement
Technical Specs
| Part type | Thermostat kit |
| Temperature rating | 195°F / approx. 91°C |
| Sierra/Recmar reference | 23-3666 |
| Kohler references | 352018 / 352031 |
| 4Boats SKU | REC23-3666 |
| Supply type | Aftermarket kit |
Compatibility / Fitment Guide
Documented Kohler model families:
| 33–40 range | 33EFOZ, 33CFOZ, 40CFOZ, 40EOZ and 40EFOZ. |
| 50–65 range | 50COZ, 50CFOZ, 50EOZ, 55EFOZ, 65COZ and 65EOZ. |
| 70–100 range | 70EFOZ, 80EOZ, 80EFOZ, 99EOZ and 100EFOZ. |
| 125–150 range | 125EOZ, 125EFOZ and 150EOZ where 352018/352031 is specified. |
| Required confirmation | Generator model suffix, serial number, engine/cooling-system parts list and 195°F thermostat rating. |
| Not for | Kohler generators requiring a different thermostat number or temperature. |
The broad model list spans several revisions; the Kohler serial-specific parts diagram remains the final fitment authority.
OEM Cross Reference
| Sierra | 23-3666 |
| Recmar | REC23-3666 |
| Kohler | 352018 / 352031 |
| 4Boats SKU | REC23-3666 |
Reference numbers are used for identification. This is a Recmar aftermarket replacement unless the listing explicitly states otherwise.
Questions & Answers
Does it fit every Kohler marine generator?
No. Only models whose parts list specifies 352018, 352031 or approved 23-3666 replacement.
What is the temperature rating?
195°F, approximately 91°C.
What does the kit include?
The thermostat and associated gaskets/seals supplied in the package; compare the received contents with the service diagram.
Can I select by kW output only?
No. Use the full model and serial number.
What else should be checked?
Inspect coolant condition, housing surfaces, circulation pump and heat-exchanger flow as applicable.
Allow the generator to cool, isolate starting power and follow the Kohler service procedure.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
