Impreza F4-2.5L SOHC (2003)
Oil Pressure Sender: Service and Repair
Oil Pressure Switch
REMOVAL
1) Remove the generator from bracket.
2) Disconnect the terminal from oil pressure switch.
3) Remove the oil pressure switch.
INSTALLATION
1) Apply liquid gasket to the oil pressure switch threads.
Liquid gasket: Part No. 004403007 Three Bond 1324 or equivalent
2) Install the oil pressure switch onto engine block.
Tightening torque: 25 Nm (2.5 kgf-m, 18.1 ft. lbs.)