Exhaust manifold / catalytic converter module with front exhaust pipe and attachments — VW
Exhaust manifold / catalytic converter module with front exhaust pipe and attachments on VW: factory workshop procedure for engines BDN, BDP.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📐 6 workshop diagrams for BDN
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
Exhaust manifold / catalytic converter module with front exhaust pipe and attachments
25 Nm
Renew
Coat threads with
high-temperature paste
G 052 112 A3
Exhaust manifold/catalytic converter module right
For cylinder bank 1
Can be renewed only with engine removed
Chapter
, Removing and installing engine
Lambda probe
G39
, 50 Nm
For cylinder bank 1
Grease only the threads with
high-temperature paste
G 052 112 A3
;
high-temperature paste
must not get into the slots of probe body.
Can be renewed only with engine removed
Chapter
, Removing and installing engine
Gasket
Renew
30 Nm
Renew
Coat threads with
high-temperature paste
G 052 112 A3
Lambda probe after catalytic converter
G130
, 50 Nm
For cylinder bank 1
Grease only the threads with
high-temperature paste
G 052 112 A3
;
high-temperature paste
must not get into the slots of probe body.
Can be renewed only with engine removed
Chapter
, Removing and installing engine
Front right exhaust pipe
For cylinder bank 1
Right mounting
Vehicles with automatic gearbox
Individual parts
Fig.
.
Vehicles with manual gearbox
Individual parts
Fig.
.
Lambda probe 2
G108
, 50 Nm
For cylinder bank 2
Grease only the threads with
high-temperature paste
G 052 112 A3
;
high-temperature paste
must not get into the slots of probe body.
Can be renewed only with engine removed
Chapter
, Removing and installing engine
Lambda probe 2 after catalytic converter
G131
, 50 Nm
For cylinder bank 2
Grease only the threads with
high-temperature paste
G 052 112 A3
;
high-temperature paste
must not get into the slots of probe body.
Can be renewed only with engine removed
Chapter
, Removing and installing engine
Left mounting
Vehicles with automatic gearbox
Individual parts
Fig.
.
Vehicles with manual gearbox
Individual parts
Fig.
.
Front left exhaust pipe
For cylinder bank 2
Exhaust manifold/catalytic converter module left
For cylinder bank 2
Can be renewed only with engine removed
Chapter
, Removing and installing engine
Upper heat shield
10 Nm
Gasket
Renew
Components of right mounting for vehicles with automatic gearbox
Bracket with buffer
Exhaust pipe
Washer
Hexagon bolt, 25 Nm
Self-locking nut, 25 Nm
Spacer sleeve
Spring
Hexagon bolt
Components of left mounting for vehicles with automatic gearbox
Bracket
Buffer
Bracket on gearbox
Spacer sleeve
Hexagon bolt, 25 Nm
Washer
Spring
Self-locking nut, 25 Nm
Exhaust pipe
Components of exhaust pipe mountings (right side) for vehicles with manual gearbox
Bracket with buffer
Washer
Hexagon bolt, 25 Nm
Exhaust pipe
Spacer sleeve
Spring
Hexagon bolt
Self-locking nut, 25 Nm
Components of exhaust pipe mountings (left side) for vehicles with manual gearbox
Bracket with buffer
Spacer sleeve
Washer
Hexagon bolt, 25 Nm
Self-locking nut, 25 Nm
Spring
Exhaust pipe
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.