Exhaust System Components, Removing and Installing (All Wheel Drive Vehicles)

Exhaust System Components, Removing And Installing (All Wheel Drive Vehicles)







1. Turbocharger
2. Gasket
- Always replace
3. Heated Oxygen Sensor (HO2S) -G39-, 50 Nm
- Black connector
- Grease threads only with hot bolt paste G 052 112 A3; paste must not be allowed to come into contact with slits in sensor body
4. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-, 50 Nm
- Brown connector
- Grease threads only with hot bolt paste G 052 112 A3; paste must not be allowed to come into contact with slits in sensor body
5. Catalytic converter
- Protect from impact damage
6. Gasket
- Always replace
7. 25 Nm
8. Front exhaust pipe
- With decoupling element
- To avoid damage, do not bend decoupling element by more than 10 degrees
9. Front clamp
- Align exhaust system so it is free of stress before tightening clamp
- Installed position of bolt ends, see Fig. 1
- Tighten bolted connections evenly
10. 40 Nm
11. Spacer sleeve
12. Buffer
13. Lug
14. Washer
15. M10 bolt, 30 Nm
16. Rear muffler (left)
- Tailpipe can be replaced
- Rear muffler and center muffler are one unit as original equipment but can be replaced separately for repair purposes.
- Cutting point
- Stress-free alignment of exhaust system
- Replacing tailpipe, see Fig. 3
17. Mounting
18. 25 Nm
19. Rear muffler (right)
- Tailpipe can be replaced
- Rear muffler and center muffler are one unit as original equipment but can be replaced separately for repair purposes.
- Cutting point
- Stress-free alignment of exhaust system
- Replacing tailpipe, see Fig. 3
20. 40 Nm
21. Rear clamps
- For separate replacement of center muffler and both rear mufflers
- Align exhaust system so it is free of stress before tightening clamp
- Installed position, see Fig. 2
- Tighten bolted connections evenly
22. Center muffler
- Center muffler and both rear mufflers are one unit as original equipment but can be replaced separately for repair purposes.
- Cutting point
- Stress-free alignment of exhaust system
23. 25 Nm
24. Mounting
25. M8 bolt
26. Washer
27. Spring
28. Lug
29. Spacer sleeve
30. 25 Nm
31. 40 Nm







Fig. 1 Installed position of front clamp

- Install clamp so that ends of bolts are not below bottom circumference of clamp.
- Bolted connection on left







Fig. 2 Installed position of rear clamp

- Install clamps so that ends of bolts are not below bottom circumference of clamps.
- Bolted connections on outside

- Align exhaust system stress-free.
- Tighten bolted connections evenly to 40 Nm.







Fig. 3 Replacing tailpipe

- Cut through tailpipe -1- squarely at cutting point -C- using body saw, e.g. VAG 1523A.
- Push tailpipe -3- on up to marking -A-. When doing so, make sure that slot in tailpipe is in line with marking -B-.
- Tighten bolted connection on clamp -2- to 25 Nm.