Where is Subaru thermostat on legacy 2007?

In a 2007 Subaru Legacy, the thermostat is located in the engine's cooling system, specifically at the engine block near the water pump. To access it, you'll need to remove the engine cover and the upper radiator hose, as the thermostat is housed in a thermostat housing connected to the engine. It's typically positioned on the driver's side of the engine. Always ensure the engine is cool before attempting any repairs.