Impreza WRX STI F4-2.5L DOHC Turbo (2007)
Thermostat: Service and Repair
Thermostat
Removal
1. Set the vehicle on a lift.
2. Lift-up the vehicle.
3. Remove the under cover.
4. Drain the engine coolant completely.
5. Disconnect the radiator outlet hose.
6. Remove the thermostat cover, and then remove the gasket and thermostat.
Installation
1. Install the gasket to thermostat, and install the thermostat and gasket to water pump as a unit.
NOTE:
