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Remove:

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the 8 nuts

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the 2 intermediate pipes. Scrap the 4 gaskets.

Unplugging the connector of the front heated oxygen sensor 

Remove the front heated oxygen sensor using tool 999 5543 SOCKET NV-22 HO2S See: Tools and Equipment/999 5543 Socket NV-22 HO2S.

Installation

Note! To ensure that there is no exhaust leakage, see: Flanged joint, assembling See: Engine, Cooling and Exhaust/Exhaust System/Exhaust
Pipe/Service and Repair/Flanged Joint, Assembling.

Installing the front heated oxygen sensor

Install the front heated oxygen sensor using 999 5543 SOCKET NV-22 HO2S See: Tools and Equipment/999 5543 Socket NV-22 HO2S. Tighten as
specified: See Specifications. Plug in the connector of the front heated oxygen sensor. Position the connector in the retainer.

Installing intermediate pipes

Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Oxygen Sensor > Component Information > Service and Repair > Adapter Wiring Switch, Replacing > Page 4117

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