Exhaust System, Assembly Overview

Exhaust System, Assembly Overview







1. Turbocharger
2. Gasket
- Replace
3. Heated Oxygen Sensor (HO2S) G39 and Oxygen Sensor (O2S) Heater Z19 (black connector)
- Torque specification, 55 Nm
- Only use high-temperature lubricant to grease the threads; do not let paste get onto slits of oxygen sensor body
- High-temperature lubricant Parts Catalog
4. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130 and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) Z29 (brown connector)
- Torque specification, 55 Nm
- Only use high-temperature lubricant to grease the threads; do not let lubricant get onto slits of oxygen sensor body
- High-temperature lubricant Parts Catalog
5. Catalytic converter
- Protect from hit- and impact stress
6. 25 Nm
- Replace
7. Gasket
- Replace
8 Bolt
9. Front exhaust pipe
- With decoupling element
- Decoupling element must not be bent more than 10 degrees otherwise it may be damaged
10. Front clamping sleeve
- Installed location: Threaded connection faces toward left
- Installation position of bolt ends
- Before tightening, align exhaust system tension-free
- Tighten threaded connections evenly
11. 23 Nm
- Replace
12. Spacer sleeve
13. Buffer
14. Tongue
15. Spacer sleeve
16. Bolt
17. Rear muffler
- For left side of vehicle
- Original equipment as one unit with center muffler. For repairs, replace each separately.
- Separating point
- Install exhaust system free of stress.
18. Suspended mountings
- Replace if damaged
- Check pretension
19. 23 Nm
20. Rear muffler
- For right side of vehicle
- Original equipment as one unit with center muffler. For repairs, replace each separately.
- Separating point
- Install exhaust system free of stress
21. 23 Nm
22. 23 Nm
23. Rear clamping sleeves
- For individual replacement of center and rear mufflers
- Before tightening, align exhaust system tension-free
- Installed location: Threaded connections face outward
- Installation position of bolt ends
- Tighten threaded connections evenly
24. Center muffler
- Original equipment as one unit with rear mufflers. For repairs, replace each separately.
- Separating point
- Install exhaust system free of stress
25. 23 Nm
26. Suspended mount
- Replace if damaged
- When installing, pay attention to direction of arrow (driving direction)
- Check pretension
27. Bolt
28. Washer
29. Spring
30. Spacing sleeve
31. 25 Nm
- Replace
32. 30 Nm
- Replace







Installed position of front clamping sleeve
- When installing double clamp, make sure that the bolt end does not project over lower edge of double clamp.

- Threaded connection faces toward left.







Installed position of rear double clamps
- When installing double clamps, make sure that the bolt ends do not project beyond lower edge of double clamp.

- Threaded connections point toward outside.