Exhaust manifold, front exhaust pipe and catalytic converter with attachments

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

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - Gasket

• Replace
• 2-part
• Observe installation position

2 - Exhaust manifold

• 2-part

3 - 25 Nm

• Replace

4 - 23 Nm

5 - 13 Nm

6 - 25 Nm

7 - Heat shield

8 - 10 Nm

9 - Coolant pipe

• Secured to exhaust gas manifold together with heat shield
• Coolant hose connection diagram → Coolant hose connection diagram 

10 - Connector

• Black, 6-pin
• Gold plated contacts

11 - Heated Oxygen Sensor (HO2S) G39 50 Nm

• Remove and install with oxygen sensor Ring Spanner 7-piece Set 3337
• Grease only threads with G 052 112 A3  hot bolt paste (anti-seize compound). Grease must not get into slots on sensor body
• If seal is leaking cut open and replace.
• Checking oxygen sensor control: → 24 MULTIPORT FUEL INJECTION (MFI)

12 - Connector

• Black, 4-pin
• Contacts 3 and 4 are gold plated

13 - Oxygen Sensor O2S Behind Three Way Catalytic Converter (TWC) G130 50 Nm

• Remove and install with oxygen sensor with Ring Spanner 7-piece Set 3337
• Grease only threads with G 052 112 A3  hot bolt paste (anti-seize compound). Grease must not get into slots on sensor body
• If seal is leaking cut open and replace
• Checking oxygen sensor control: → 24 MULTIPORT FUEL INJECTION (MFI)

14 - Front exhaust pipe with catalytic converter

• Checking catalytic converter → Catalytic converter, checking 

15 - To forward muffler

16 - 5 Nm

17 - Heat shield

• For catalytic converter

18 - Securing clamp

• Replace
• Slide onto retainer from rear before tightening clamp

19 - 40 Nm

• Replace

20 - Gasket

• Replace
• 2-part