GENUINE MERCURY REPLACEMENT PART
THERMOSTAT 77°C (170°F)
Part no. 864493
₺ equivalent is calculated at the current CBRT rate (2026-10-22); prices exclude VAT
Check compatibility first.
The model name alone may not be enough; the same model uses different parts across serial ranges.
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What does this part do?
Keeps engine temperature steady. Failure shows as overheating or a cold-running engine. Replace at 300-hour services.
- Brand
- Mercury Marine
- Product group
- Thermostats
- Part number
- 864493
- Paket adedi
- 1.0
- Tehlike kodu
- 0.0
- Sınıf
- 0.0
- Mercury durumu
- ACT
- Paket ağırlığı
- .188 LBS (0.09 kg)
- Yükseklik
- 2.125 IN (5.4 cm)
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
- 6.2L MPI TOW 320 — Fresh Water Cooling Heat ExchangerPos. 8 · qty 1 · go to diagram →
- 6.2L MPI MIE 300 — Fresh Water Cooling V Drive Heat ExchangerPos. 8 · qty 1 · go to diagram →
- 6.2L MPI MIE 300 — Fresh Water Cooling Heat ExchangerPos. 8 · qty 1 · go to diagram →
- 5.7L MPI MIE EC — Thermostat and Housing Closed CoolingPos. 10 · qty 1 · go to diagram →
- 350 MAG MPI HORIZON MIE — Thermostat and HousingPos. 24 · qty 1 · go to diagram →
- 350 MAG MPI HORIZON MIE — THERMOSTAT AND HOUSINGPos. 24 · qty 1 · go to diagram →
Maintenance jobs that use this part
This part is on the material list of the Mercury maintenance plans below; the job page (Turkish) has the steps, capacities and the full list.
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