A6 Quattro Sedan V6-2.8L (AHA) (1998)
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Mounted to bulkhead
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For Heated Oxygen Sensors (HO2S) and for heating function
14
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25 Nm (18 ft lb)
15
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Cover cap
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10 Nm (7 ft lb)
16
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Connection
17
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Upper heat shield
18
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Lower heat shield
19
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Left-side exhaust manifold
20
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Gaskets
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Always replace
21
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Right-side exhaust manifold
22
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Heated Oxygen Sensor (HO2S) -G39-
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50 Nm (37 ft lb)
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Only grease threads with "G5" ("G5" must not get into slots on body of sensor)
23
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Right- front exhaust pipe with Three Way Catalytic Converter (TWC)