Exhaust Manifolds With Primary Catalytic Converters and Attachments, Assembly Overview

Exhaust Manifolds With Primary Catalytic Converters And Attachments, Assembly Overview

NOTE:
- Disconnect the batteries before removing front exhaust pipes with catalytic converters.
- When installing exhaust pipes, ensure that the flange connection after the catalytic converter seals tightly. Leaks in this area produce pulsations in the exhaust. This allows ambient air to reach the lambda probe after catalytic converter and the lambda regulation will be disturbed.
- Replace self-locking nuts.







1. Cylinder head
2. Gasket
- Replace
3. Securing nut
- M8: 25 Nm
- M10: 40 Nm
4. Exhaust manifold
5. Gasket
- Locating tabs face downward
- Replace
6. Primary catalytic converter
- Installed in the exhaust gas stream of cylinders 1, 2 and 3
7. Primary catalytic converter
- Installed in the exhaust gas stream of cylinders 4, 5 and 6
8. Heated Oxygen Sensor (HO2S) G39, 50 Nm
- Installed in the exhaust gas stream of cylinders 1, 2 and 3
- Grease only threads with G 052 112 A3. G 052 112 A3 must not get into slots on sensor body.
- Use ring spanner set for oxygen sensor 3337 for removal and installation
9. Heated Oxygen Sensor (HO2S) 2 G108, 50 Nm
- Installed in the exhaust gas stream of cylinders 4, 5 and 6
- Grease only threads with G 052 112 A3. G 052 112 A3 must not get into slots on sensor body.
- Use ring spanner set for oxygen sensor 3337 for removal and installation
10. Catalytic converter
11. 25 Nm
12. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130, 50 Nm
- Installed in the exhaust gas stream of cylinders 1, 2 and 3
- Grease only threads with G 052 112 A3. G 052 112 A3 must not get into slots on sensor body.
- Use ring spanner set for oxygen sensor 3337 for removal and installation
13. Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) G131, 50 Nm
- Installed in the exhaust gas stream of cylinders 4, 5 and 6
- Grease only threads with G 052 112 A3. G 052 112 A3 must not get into slots on sensor body.
- Use ring spanner set for oxygen sensor 3337 for removal and installation
14. Heat shield
- With intake manifold support
15. 23 Nm
16. 20 Nm
17. Bracket
18. 23 Nm