Facet 31293700 Engine Coolant Thermostat Assembly with Housing and Sensor

The Facet 31293700 is a complete engine coolant thermostat assembly designed to regulate engine temperature and maintain optimal operating conditions. This thermostat operates at 90 degrees Celsius (194°F) and includes the housing and integrated temperature sensor for comprehensive cooling system control.

Key Features:

• Operating temperature: 90°C (194°F) for precise engine temperature control
• Complete assembly includes thermostat housing and temperature sensor
• Wax pellet design expands and contracts to open and close valve at specified temperature
• Direct replacement for OEM part numbers 30637216, 30637243, 30650023, and 31219205
• Manufactured by Facet, an Italian automotive components specialist

The thermostat regulates coolant flow between the engine and radiator by closing when the engine is cold to accelerate warm-up, then opening when optimal temperature is reached to prevent overheating. This mechanical operation ensures the engine runs at peak efficiency, reducing fuel consumption and emissions while prolonging engine life. When replacing a thermostat, it is important to properly bleed air from the cooling system to ensure proper pressurization and coolant circulation.