Malibu Series/LT4 Post-Cat (Downstream) O2 Sensor Accessories Remove the protective cap covering

Remove the protective cap covering the main output stud

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Measure the port opening and confirm compatibility before purchase

this branched coil harness helps ensure consistent power and signal delivery to the ignition coils—ideal for resolving issues caused by damaged plugs

It is designed to be welded in place for a permanent seal

Malibu Series/LT4 Post-Cat (Downstream) O2 Sensor Accessories Remove the protective cap coveringPost Catalytic Converter Oxygen Sensor (Post Cat O2 Sensor) Location: Mounted in the exhaust elbow system or exhaust y pipe after the catalytic converter Installation Tips: Safety First: Make sure the engine and exhaust are completely cool to avoid burns. Disconnect the battery to avoid electrical shorts. Locate the Sensor: Find the post cat sensorit's the one after the catalytic converter in the exhaust pipe. Trace the wiring harness to confirm