Front Exhaust Pipe With Catalytic Converter Assembly Overview

Front Exhaust Pipe with Catalytic Converter Assembly Overview





1 Exhaust Manifold

• Coat the stud bolts with hot bolt paste (G 052 118 A3).

2 Gasket

• Replace

• Note the installed position:

Gasket recess - arrow A - must be located at the exhaust manifold recess - arrow B -.

3 Connector

• Black, 4 pin.

• Installed location, refer to => [ Harness Connector for Oxygen Sensors - Installed Position ].

4 Oxygen Sensor (O2S) in Center Three Way Catalytic Converter (TWC), Bank 1 (G465), 55 Nm

• Use ring spanner 7 piece set (3337) for removal and installation.

• Threads of a new oxygen sensor are coated with assembly paste.

• When using an oxygen sensor again, only use hot bolt paste (G 052 112 A3) to grease the threads; do not let the paste get onto the slits of the oxygen sensor body.

• If the sealing ring is leaking cut it off and replace it.

5 Spring Nut

• Insert from front.

6 Double Clamp

• Before tightening, ensure the exhaust system is tension free. Refer to => [ Exhaust System, Installing ] Exhaust System, Installing.

• Installed location, refer to => [ Installed Position of Double Clamp ].

• Tighten the bolts evenly.

7 Nut, 25 Nm

8 Nut, 23 Nm

9 Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC) (G130), 55 Nm

• Use ring spanner 7 piece set (3337) for removal and installation.

• Threads of a new oxygen sensor are coated with assembly paste.

• When using an oxygen sensor again, only use hot bolt paste (G 052 112 A3) to grease the threads; do not let the paste get onto the slits of the oxygen sensor body.

• If the sealing ring is leaking cut it off and replace it.

10 Connector

• Brown, 4 pin.

• Installed location, refer to => [ Harness Connector for Oxygen Sensors - Installed Position ].

11 Front Crossmember

12 Bolt, 5 Nm

13 Heat Shield

• For the catalytic converter.

14 Suspended Mount

• Replace if damaged

15 Bolt, 25 Nm

16 Bolt, 10 Nm

17 Front Exhaust Pipe with Catalytic Converter

• Protect from shocks and impact stress.

• With a flex joint.

• Flex joint must not be bent more than 10 degrees, otherwise it may be damaged.

• Removal and installation, refer to => [ Front Exhaust Pipe with Catalytic Converter ] Front Exhaust Pipe With Catalytic Converter.

• Install the exhaust system free of stress. Refer to => [ Exhaust System, Installing ] Exhaust System, Installing.

18 Nut, 25 Nm

• Replace

Installed Position of Double Clamp





- Arrow - points in direction of travel.

- Align the double clamp - 1 - to the mark on the catalytic converter - 2 -.

- a - = 5 millimeter (mm)

Clamp bolts must not project beyond the lower edge of the double clamp.

Harness Connector for Oxygen Sensors - Installed Position





Harness connectors are located on the right on the vehicle floor in the cover.

1. Harness connector for O2S behind TWC, brown

2. Harness connector for HO2S, black

3. Harness connector for O2S in Center TWC, Bank 1, black