RS 4 Quattro Cabriolet V8-4.2L (BNS) (2008)
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1. Heated Oxygen Sensor (HO2S) 2 (G108) (in front of catalytic converter)
2. Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) (G131)
‹› Tightening Specifications: 55 Nm
‹› Coat new oxygen sensors with an assembly paste. This paste must not come into contact with sensor slots.
‹› For a used oxygen sensor, only coat threads with hot bolt paste. This paste must not come into contact with sensor slots.
‹› The oxygen sensor wire must always be attached at the same location when installing. Do not the electrical wire connection come in contact with
the exhaust pipe.
Oxygen sensors, removing and installing. Refer to => [ Oxygen Sensors ] See: Oxygen Sensors
