Exhaust manifold, front exhaust pipe with double catalytic converter and attachments, assembly overview

Fig 1: Exhaust Manifold, Front Exhaust Pipe With Double Catalytic Converter And Attachments, Assembly Overview

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - Heat shield

2 - M6 - 10 Nm, M8 - 25 Nm, M10 - 40 Nm

3 - Seal

• Replace

4 - Exhaust manifold

5 - Front exhaust pipe

• For removal, remove front driveshaft tube: Refer to 39F - FINAL DRIVE, FRONT DIFFERENTIAL or 39R - FINAL DRIVE, REAR DIFFERENTIAL

6 - Connector

• Black, 6-pin

7 - Heated Oxygen Sensor (HO2S) G39, 50 Nm

• Grease only the threads with "G 052 112 A3" ; "G 052 112 A3" must not get into the slots on the probe body
• Use ring spanner set for oxygen sensor 3337 for removal and installation

8 - Heated oxygen sensor (HO2S) 2 G108, 50 Nm

• Grease only threads with "G 052 112 A3" ; "G 052 112 A3" must not get into slots on probe body
• Use ring spanner set for oxygen sensor 3337 for removal and installation

9 - Connector

• Brown, 6-pin

10 - Connector

• Brown, 4-pin

11 - Double catalytic converter

• Behind the pipe junction with limit stop for double clamps

12 - Connector

• Black, 4-pin

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

• Grease only threads with "G 052 112 A3" ; "G 052 112 A3" must not get into slots on probe body
• Use ring spanner set for oxygen sensor 3337 for removal and installation

14 - To front muffler

15 - Oxygen sensor (O2S) 2 behind three way catalytic converter (TWC) G131, 50 Nm

• Grease only the threads with "G 052 112 A3" ; "G 052 112 A3" must not get into slots on probe body
• Use ring spanner set for oxygen sensor 3337 for removal and installation

16 - Wiring router

• Fastened to subframe

17 - Washer