Exhaust system components, assembly overview: Notes

Fig 1: Exhaust System Components, Assembly Overview

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - Tunnel bridge

2 - Center muffler

As standard, center and rear mufflers are installed as a single component. In cases of repair, the center and rear muffler are supplied individually and with a double clamp for connecting.
Separating point Separation point on exhaust pipe under Exhaust system components, assembly overview

3 - Suspended mount

4 - 25 Nm

5 - 40 Nm

6 - Washer

7 - Gasket

8 - Turbocharger

9 - Front exhaust pipe with catalytic converter

10 - Heated Oxygen Sensor (HO2S) G39 ^* , 50 Nm

Grease only threads with hot bolt paste G 052 112 A3 (anti-seize compound). Hot bolt paste G 052 112 A3 must not get into slots on sensor body. (Part numbers are for reference only. Always check with your Parts Department for the latest part number information).
Use ring spanner set for oxygen sensor 3337 for removal and installation
If sealing ring is leaking cut open and replace.
Checking, refer to OXYGEN SENSOR HEATING FOR HEATED OXYGEN SENSOR (HO2S) -G39-, CHECKING

11 - Oxygen sensor (O2S) behind three way catalytic converter (TWC) G130 ^* , 50 Nm

Grease only threads with hot bolt paste G 052 112 A3 (anti-seize compound). Hot bolt paste G 052 112 A3 must not get into slots on sensor body. (Part numbers are for reference only. Always check with your Parts Department for the latest part number information).
Use ring spanner set for oxygen sensor 3337 for removal and installation
If sealing ring is leaking cut open and replace.
Checking, refer to OXYGEN SENSOR HEATING FOR OXYGEN SENSOR (O2S) BEHIND THREE WAY CATALYTIC CONVERTER (TWC) -G130-, CHECKING for 1.8 LITER 4-CYL. 5V TURBO FUEL INJECTION & IGNITION, ENGINE CODE(S): AWD or OXYGEN SENSOR HEATING FOR OXYGEN SENSOR (O2S) BEHIND THREE WAY CATALYTIC CONVERTER (TWC), CHECKING for 1.8 LITER 4-CYL. 5V TURBO FUEL INJECTION IGNITION, ENGINE CODE(S): AWW, AWP

12 - Double clamp

Note installation position Installation position of double clamp under Exhaust system components, assembly overview

13 - 40 Nm

14 - Suspended mount

15 - 25 Nm

16 - Rear muffler

As standard, center and rear mufflers are installed as a single component. In cases of repair, the center and rear muffler are supplied individually and with a double clamp for connecting.
Separating point: Separation point on exhaust pipe under Exhaust system components, assembly overview
Installing muffler free of tension Installing muffler free of tension

17 - Suspended mount

18 - 25 Nm

19 - Double clamp

20 - 40 Nm

21 - 25 Nm