heating AUDI A4 1998 B5 / 1.G AHA ATQ Engines Exhaust System Components Manual
Page 4 of 12
26-3
CAUTION!
Part numbers are listed here for reference only.
Always check with your Parts department for
the latest information. 11 -
Left-front exhaust pipe with Three Way
Catalytic Converter (TWC)
The flexpipe in left and right exhaust pipes
must not be bent more than 10 , otherwise
it may be damaged
12 -
Heated Oxygen Sensor (HO2S) 2 -G108-
50 Nm (37 ft lb)Only grease threads using "G5" ("G5" must
not get into slots on body of sensor) Checking DTC memory Repair Manual,
2.8 Liter V6 5V Fuel Injection & Ignition,
Repair Group 01 Checking components and heating function
Repair Manual, 2.8 Liter V6 5V Fuel
Injection & Ignition, Repair Group 24
Pa
ge 4 of 12 Exhaust s
ystem com
ponents, removin
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11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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pair&id=AUDI.B5.GE03.26.1
Page 5 of 12
26-4
13 -
4-pin harness connectors
BlackMounted to bulkheadFor Heated Oxygen Sensors (HO2S) and
for heating function
14 -
25 Nm (18 ft lb)
15 -
Cover cap 10 Nm (7 ft lb)
16 -
Connection
17 -
Upper heat shield
18 -
Lower heat shield
19 -
Left-side exhaust manifold
20 -
Gaskets Always replace
21 -
Right-side exhaust manifold
Pa
ge 5 of 12 Exhaust s
ystem com
ponents, removin
g and installin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE03.26.1
Page 6 of 12
26-5
CAUTION!
Part numbers are listed here for reference only.
Always check with your Parts department for
the latest information. 22 -
Heated Oxygen Sensor (HO2S) -G39-
50 Nm (37 ft lb)Only grease threads with "G5" ("G5" must
not get into slots on body of sensor) Checking DTC memory Repair Manual,
2.8 Liter V6 5V Fuel Injection & Ignition,
Repair Group 01 Checking components and heating
function Repair Manual, 2.8 Liter V6 5V
Fuel Injection & Ignition, Repair Group 24
23 -
Right-front exhaust pipe with Three Way
Catalytic Converter (TWC)
The flexpipe in left and right exhaust pipes
must not be bent more than 10 , otherwise
it may be damaged
Pa
ge 6 of 12 Exhaust s
ystem com
ponents, removin
g and installin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE03.26.1