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GENUINE MERCURY REPLACEMENT PART
SCREW (4.25 Inches) Thermostat Housing
Part no. 33389
This part has been superseded — current part:
60410 → 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?
Fastener. Use the original size and coating (usually stainless) and torque to spec in aluminium castings.
- Brand
- Mercury Marine
- Product group
- Thermostats
- Part number
- 33389
- Paket adedi
- 1.0
- Tehlike kodu
- 0.0
- Sınıf
- 10.0
- Mercury durumu
- SS
- Paket ağırlığı
- .15 LBS (0.07 kg)
- Yükseklik
- .7 IN (1.8 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
- 228 MIE (4 BBL.) GM 305 V-8 — THERMOSTAT HOUSINGPos. 5 · qty 2 · go to diagram →
- 185 (2 BBL.) GM 262 V-6 — Standard Cooling SystemPos. 11 · qty 2 · go to diagram →