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- Sierra 18-3550 Marine Thermostat 140°F Replacement for Mercruiser Mercury
Sierra 18-3550 Marine Thermostat 140°F Replacement for Mercruiser Mercury
Product Code: SIE18-3550
The Sierra 18-3550 Marine Thermostat is a 140°F replacement designed for Mercruiser and Mercury marine engines. This thermostat offers reliable temperature control and is an OEM replacement for various Mercruiser stern drives.
- Direct replacement for Mercury/Force part numbers: F84068, F84068-1, F84068-2, F85068-2, 59078, 59078A1, 59078B
- Fits select Mercruiser and Mercury marine engines
- Maintains optimal engine temperature at 140°F
- Quality aftermarket part by SIERRA