9-3 Arc/Aero (9440) L4-2.0L Turbo (2.0 T) (2004)
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18. Lower the car.
19. Lubricate the threads sparingly with 30 20 971 Screw-thread paste and fit the upper oxygen sensor.
Tightening torque 40 Nm (30 lbf ft).
20. Plug in and secure the oxygen sensor connectors.
