4.0L FSI CEUC/CRDB/CTGE/CWUB/CWUC Exhaust
- 1 - Oxygen sensor after three way catalytic converter -G130-
- 1 - Heater for oxygen sensor 1 after catalytic converter -Z29-
- 2 - Heated oxygen sensor 2 -G108-
- 2 - Oxygen sensor 2 heater -Z28-
- 3 - Heated oxygen sensor -G39-
- 3 - Oxygen sensor heater -Z19-
- 4 - Oxygen sensor 2 after catalytic converter -G131-
- 4 - Heater for oxygen sensor 2 after catalytic converter -Z30-