List of parts and assemblies of the intake pipe with a catalytic converter with technological notes on repair to Figure VC2.226:
1. Exhaust manifold.
2. Nut for fastening the exhaust manifold to the cylinder head: 25 Nm:
- replace with a new one during assembly.
3. Lambda probe (G39), installed before the catalytic converter: 55 Nm:
- apply high-temperature thread paste only to the threads; do not allow the paste to get into the grooves of the lambda probe body.
4. Coupling sleeve:
- tighten the clamp bolts evenly.
5. Coupling sleeve tie bolt nut: 25 Nm.
6. Body tunnel cross member.
7. Cross member mounting nut: 23 Nm.
8. Lambda probe (G130), installed after the catalytic converter: 55 Nm:
- Apply high-temperature thread paste only to the threads; do not allow the paste to enter the grooves of the lambda probe housing;
- the connector is located under the bottom trim on the right side.
9. Bracket mounting screw to the body: 25 Nm.
10. Bracket.
11. Intake pipe with catalytic converter and bellows:
- the bellows must not be bent more than 10° due to the possibility of damage.
12. Nut securing the inlet pipe to the exhaust manifold: 25 Nm:
- replace with a new one during assembly;
- Apply high-temperature thread paste to the threads of the exhaust manifold studs;
- observe the tightening sequence.
13. Gasket:
- replace with a new one during assembly.
[The original text is available on the portal VWmanual.ru]
Tightening torques:
- Downpipe to exhaust manifold: 25 Nm*.
- Heat shield drive shaft to cylinder block: 35 Nm.
- Bracket of the intake pipe to the subframe: 23 Nm.
- Front cross member to body: 23 Nm.
* Self-locking nuts must be replaced with new ones.

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