Exhaust Manifold, Front Exhaust Pipe With Three Way Catalytic Converter (TWC) and Attachments

Exhaust Manifold, Front Exhaust Pipe With Three Way Catalytic Converter (TWC) And Attachments (vehicles With Engine Code BBW)







1. Heat shield
2. Heated Oxygen Sensor (HO2S) -G39-* bank 1, 50 Nm
- Component location: In exhaust manifold
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC)
- Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC)
- Component location of harness connector, see Fig. 1
3. 10 Nm
4. 25 Nm
5. 25 Nm
- Always replace
6. 40 Nm
7. Connection tube
8. Connecting piece, 60Nm
9. 25 Nm
10. Support ring
11. Oxygen Sensor (O2S) in Center Three Way Catalytic Converter (TWC), Bank 1 -G465-*, 50 Nm
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) in Center Three Way Catalytic Converter (TWC).
- Check Oxygen Sensor (O2S) and oxygen sensor control in center Three Way Catalytic Converter (TWC).
- Component location of harness connector, see Fig. 1
12. Speed nut
- Slide on from front
13. Front exhaust pipe with catalytic converter
- Check catalytic converter
14. To front muffler
- page 26-22, item 1
15. Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- bank 1*, 50 Nm
- Component location: In rear catalytic converter
- Only use "G 052 112 A3" to grease thread; do not let "G 052 112 A3" get onto slit of oxygen sensor
- Voltage supply of oxygen sensor heater via Fuel Pump (FP) relay -J17-
- Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC)
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC)
- Component location of harness connector, see Fig. 1
16. 5 Nm
17. 10 Nm
18. Heat shield
- For catalytic converter
19. 25 Nm
- Always replace
20. Exhaust Gas Temperature (EGT) sensor 1 -G235-,45 Nm
- Component location of harness connector, see Fig. 1
21. Gasket
- Always replace
22. Exhaust manifold
23. Gasket
- Always replace

Fig. 1 Component location of harness connectors







1. Protective housing, at right vehicle underside
2. For Exhaust Gas Temperature (EGT) sensor 1 -G235-
3. For Heated Oxygen Sensor (HO2S) -G39- bank 1
4. For Oxygen Sensor (O2S) in Center Three Way Catalytic Converter (TWC), Bank 1 -G465-
5. For Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- bank 1