Assembly overview - cylinder bank 1 exhaust manifold with starter catalytic converters and attachments — VW
Assembly overview - cylinder bank 1 exhaust manifold with starter catalytic converters and attachments on VW: factory workshop procedure for engines BAN.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
Assembly overview - cylinder bank 1 exhaust manifold with starter catalytic converters and attachments
Note
Cylinder bank 1 (bank 1) is located on the right side when looking forwards.
Cylinder bank 2 (bank 2) is located on the left side when looking forwards.
Arrangement of exhaust banks and cylinders on engine
Fig.
.
Exhaust manifold
For exhaust bank 1 of cylinders 1 … 3.
Removing and installing
Chapter
Lambda probe
G39
, 50 Nm
Installed in exhaust gas stream of cylinders 1 … 3.
Removing and installing
Chapter
Black connector
Location of connectors
Fig.
.
Grease only thread with
G 052 112 A3
.
G 052 112 A3
must not get into slots in probe body.
Gasket
Renew.
25 Nm
Renew.
Coat thread with
G 052 112 A3
.
Exhaust manifold
For exhaust bank 2 of cylinders 4 … 6.
Removing and installing
Chapter
Secondary air channels
25 Nm
Renew.
Coat thread with
G 052 112 A3
.
Lambda probe 2
G108
, 50 Nm
Installed in exhaust gas stream of cylinders 4 … 6.
Removing and installing
Chapter
Green connector
Location of connectors
Fig.
.
Grease only thread with
G 052 112 A3
.
G 052 112 A3
must not get into slots in probe body.
Starter catalytic converter
For exhaust bank 2 of cylinders 4 … 6.
Removing and installing
Chapter
Aligning starter catalytic converters with exhaust pipes
Chapter
Lambda probe 2 after catalytic converter
G131
, 50 Nm
Installed in exhaust gas stream of cylinders 4 … 6.
Removing and installing
Chapter
Green connector
Location of connectors
Fig.
.
Grease only thread with
G 052 112 A3
.
G 052 112 A3
must not get into slots in probe body.
Lambda probe after catalytic converter
G130
, 50 Nm
Installed in exhaust gas stream of cylinders 1 … 3.
Removing and installing
Chapter
.
Black connector
Location of connectors
Fig.
.
Grease only thread with
G 052 112 A3
.
G 052 112 A3
must not get into slots in probe body.
Starter catalytic converter
For exhaust bank 1 of cylinders 1 … 3.
Removing and installing
Chapter
Aligning starter catalytic converters with exhaust pipes
Chapter
25 Nm
Renew.
Coat thread with
G 052 112 A3
.
Front right exhaust pipe
Aligning starter catalytic converters with exhaust pipes
Chapter
To catalytic converter with front silencer
Chapter
25 Nm
Renew.
Coat thread with
G 052 112 A3
.
25 Nm
Renew.
Coat thread with
G 052 112 A3
.
Bracket
Seal
Renew.
Sealing flange
Gasket
Renew.
Bracket
Upper heat shield
10 Nm
Installation location of Lambda probe connectors for cylinder bank 1
1
Black 6-pin connector: for
Lambda probe
G39
2
Green 6-pin connector: for
Lambda probe 2
G108
3
Black 4-pin connector: for
Lambda probe after catalytic converter
G130
4
Green 4-pin connector: for
Lambda probe 2 after catalytic converter
G131
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
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Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.