A4 Quattro Wagon V6-3.0L (AVK) (2002)
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Disconnect connector of relevant oxygen sensor
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Undo cable ties.
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Remove Oxygen sensor using special tool -3337-.
Installing
NOTE:
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The screw thread on the oxygen sensor is coated with assembly past. This past must not be allowed to penetrate the openings on the sensor.
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When installing, the cable ties must be re-installed at exactly the same points in order to prevent contact between the oxygen sensor wire and the
exhaust pipe.
Tightening Torque: 55 Nm