Exhaust System Assembly Overview

Exhaust System Assembly Overview





1 Gasket

• Always replace.

2 Heated Oxygen Sensor (G39), 55 Nm

• Threads of the new oxygen sensors are coated with assembly paste

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

3 Nut, 40 Nm

• Always replace.

• Coat the stud bolts on the exhaust manifold with hot bolt paste (G 052 112 A3).

4 Catalytic Converter

• With front exhaust pipe.

• Protect from shocks and impact stress.

• With the flex joint.

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

• Removing and installing, refer to => [ Catalytic Converter with Front Exhaust Pipe ] Service and Repair.

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

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

• Threads of new oxygen sensors are coated with assembly paste.

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

6 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 Clamp ].

• Tighten the bolts evenly.

7 Nut, 25 Nm

8 Suspended Mount

9 Front Muffler

• Factory-installed with rear muffler as one unit, to be replaced individually in the event of repairs.

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

• Separating the exhaust system. Refer to => [ Front and Rear Mufflers, Separating and Connecting ] Service and Repair.

10 Retaining Loop

• Replace if damaged.

11 Repair Clamp

• For individual replacement of the front and rear mufflers.

• Installed location, refer to => [ Front and Rear Mufflers, Separating and Connecting ] Service and Repair.

• Tighten the bolts evenly.

12 Rear Muffler

• Factory-installed with front muffler as one unit, to be replaced individually in the event of repairs.

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

• Separating the exhaust system, refer to => [ Front and Rear Mufflers, Separating and Connecting ] Service and Repair.

13 Suspended Mount

• Replace if damaged.

14 Bolt, 25 Nm

15 Front Crossmember

16 Suspended Mount

• Replace if damaged.

Installed Position of Clamp





- Arrow - points in direction of vehicle travel.

- Align the clamp - 1 - with the marking on the pipe - 2 -:

• - a - = 5 mm

• Bolts must not project beyond the lower edge of the clamp.