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Original Equipment Manufacturer | 78C (172F) Alternate Temp Thermostat | 78C | Includes Thermostat Seal
The thermostat regulates engine temperature by controlling coolant flow between the engine and radiator, keeping the engine in its optimal operating temperature range. Signs of failure include: an engine that overheats, an engine that runs consistently cold, an erratic temperature gauge, or a heater that blows cold air. A stuck thermostat can cause serious engine damage - replace it before a small fix becomes a major repair.
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This part also fits:
- 1999 Subaru Impreza RS Manual Trans.
- 2000 Subaru Impreza RS Manual Trans.
- 2001 Subaru Impreza L
- 2001 Subaru Impreza RS Manual Trans.
- 2002 Subaru Impreza RS Manual Trans.
- 2002 Subaru Impreza WRX Manual Trans.
- 2003 Subaru Impreza RS Manual Trans.
- 2003 Subaru Impreza WRX Manual Trans.
- 2004 Subaru Impreza WRX
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