Recmar 143°F Thermostat 878904 436195 Sierra 18-3561
REC878904
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Regular price£8.76
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Recmar 143°F Marine Thermostat
61.5°C | 878904 / 436195 / 18-3561
Aftermarket Recmar 143°F (approximately 61.5°C) thermostat cross-referenced to specified MerCruiser and Johnson/Evinrude part numbers.
VERIFY BEFORE ORDERING: The exact model/year coverage verified below is for Johnson/Evinrude outboards. MerCruiser compatibility must be confirmed by the original thermostat number and engine serial; do not order from the MerCruiser name alone.
Key Features
- Rated 143°F / approximately 61.5°C
- Aftermarket Recmar thermostat
- Verified Johnson/Evinrude model families and years
- MerCruiser and Sierra cross-references
- Thermostat only unless packaging states otherwise
Technical Specs
| Part type | Engine-coolant thermostat |
| Opening rating | 143°F / approx. 61.5°C |
| Brand status | Aftermarket Recmar |
| Supply | Thermostat only; verify gasket requirement |
| 4Boats SKU | REC878904 |
Compatibility / Fitment Guide
| Engine group | Verified models | Checks / exclusions |
|---|---|---|
| Johnson / Evinrude 9.9–15hp Big Bore | 1996–2006 verified family | Confirm 3-cylinder/Big Bore model and OEM 436195. |
| Johnson / Evinrude 40, 48, 50hp | 1995–2005 verified applications | Model year and parts diagram must match. |
| Johnson / Evinrude 3-cylinder | 1993–2001 verified family | Horsepower alone is insufficient. |
| Johnson / Evinrude 90° V4 | 1993–2001 verified family | Confirm thermostat location and quantity. |
| MerCruiser cross-reference | Engines whose serial-specific catalogue specifies 27-33956, 27-878904, 8M0175328 or 8M6010304 | No blanket MerCruiser model fitment is claimed. |
Final fitment check: Match temperature rating, dimensions and the serial-specific OEM number. Confirm whether a new gasket/seal is required.
Part Number Cross Reference
| MerCruiser | 27-33956; 27-878904; 33956; 878904; 8M0175328; 8M6010304 |
| Johnson / Evinrude / Bombardier | 0436195; 436195; 777837 |
| Sierra | 18-3561 |
| GLM / EMP | GLM13150; EMP 75-08632 |
| Recmar / 4Boats | REC878904 |
Frequently Asked Questions
Is this genuine MerCruiser or Evinrude?
No. It is an aftermarket Recmar part.
What is the temperature rating?
143°F, approximately 61.5°C.
Is a gasket included?
Do not assume so; verify the package and order the correct gasket separately if required.
Will it fit every 40–50hp outboard?
No. Only the listed Johnson/Evinrude families with matching OEM reference are verified.
Never substitute a different opening temperature unless the engine manufacturer specifies it.
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