9-3 Arc/Aero (9440) L4-2.0L Turbo (2.0 T) (2004)
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19. Tighten the catalytic converter nuts and bolts a last time.
Tightening torque, bolts: 25 Nm (18.5 ft. lbs.).
20. Lubricate the threads sparingly with 30 20 971 Screw-thread paste and fit the lower oxygen sensor.
Tightening torque 40 Nm (30 ft. lbs.).
Important: Make sure that the oxygen sensor cables are not twined or damaged.
21. Lift up the oxygen sensor cable.
Important: Make sure that no cables are pinched or chafed.
