ION L4-2.4L (2007)
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5. Install a NEW catalytic converter gasket.
6. Install the catalytic converter to the exhaust manifold studs.
7. Install the catalytic converter to exhaust manifold nuts.
Tighten the nuts to 50 N.m (37 lb ft).
8. Lower the vehicle.
9. If reinstalling the old HO2S, coat the threads with anti-seize compound, Saturn P/N 21485279 or equivalent.
10. Install the HO2S.
Tighten the sensor to 42 N.m (31 lb ft).