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GENUINE MERCURY REPLACEMENT PART
HOUSING Thermostat
Part no. 842590003
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Superseded by: 840047A02
This part has been superseded — current part:
840047A02 → open current partCheck compatibility first.
The model name alone may not be enough; the same model uses different parts across serial ranges.
Verify by serial numberYour cart becomes a quote request for our sales team; no payment is taken.
What does this part do?
Main casting of an assembly. Address cracks and thread damage before they spread.
- Brand
- Mercury Marine
- Product group
- Thermostats
- Part number
- 842590003
- Menşei
- US
- Paket adedi
- 1.0
- Tehlike kodu
- 0.0
- Sınıf
- 0.0
- Mercury durumu
- SS
KNOW THE PART BETTER
Make the choice clear.
Thermostat rating (e.g. 60 °C / 71 °C) varies by engine; the wrong rating runs the engine cold or hot. It is replaced together with its gasket.
Explore inside the engineHave this ready when asking for a quote
Engine serial number and the rating/code on the old thermostat.
Used on these engines
- 1075 SCi — Cooling Components (Water Thermostat Housing)Pos. 6 · qty 1 · go to diagram →
- 850 SCi — Cooling Components (Water Thermostat Housing)Pos. 6 · qty 1 · go to diagram →