Impala V6-3.9L (2007)
Installation Procedure
Important: A special anti-seize compound is use on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite
tends to burns away, but the glass beads remain, making the sensor easier to remove. New or service replacement sensors already have the
compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the
threads must have anti-seize compound applied before reinstallation.
1. If re-installing the old sensor, coat the threads with the anti-seize compound P/N 12377953, or equivalent.
Notice: Refer to Fastener Notice.
2. Install the HO2S to the catalytic converter.
Tighten the sensor to 42 N.m (31 lb ft).
3. Connect the HO2S electrical connector (3).
