Catalytic Converter: Service and Repair

Front exhaust pipe and catalyst with components





1. From turbocharger
2. Seal
^ Always replace
3. 25 Nm
^ Always replace
^ Oil threaded studs with G 052 112 AS
4. Front exhaust pipe with catalytic converter
5. To rear muffler
6. Connector
^ Connection in protective housing, on vehicle underside right side
7. Mounting
8. 25 Nm
9. Heated Oxygen Sensor (HO2S) -G39-, 50 Nm
^ Grease only threads with hot bolt paste G 052 112 A3 (anti-seize compound). Grease must not get into slots on sensor body
^ Remove and install with 3337
^ To remove, separate connection and move wiring aside