Exhaust manifold, front exhaust pipe with double catalyst and attachments — VW
Exhaust manifold, front exhaust pipe with double catalyst and attachments on VW: factory workshop procedure for engines AXJ.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
🔧 Engine codes this applies to
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
The following description deals with the Golf 1998 ä, Bora 1999 ä. Therefore differences must be considered, if necessary.
Heat shield
M6 - 10 Nm
M8 - 25 Nm
M10 - 40 Nm
Gasket
Renew
Exhaust manifold
Front exhaust pipe
To remove, remove front propshaft
=> Repair group 39
6 cyl. Injection engine, Mechanics
Connector
Black, 6-pin
Lambda probe 1 bank 1 (G39)* before catalyst, 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
Remove and install with ring spanner 3337
Checking:
=> Repair group 24; Check functions; Check Lambda probe and Lambda regulation before catalyst
6 cyl. Injection engine, Mechanics
Check functions
Check Lambda probe and Lambda regulation before catalyst
Connector
Brown, 4 pin
Lambda probe 2 bank 2 after catalyst (G131)*, 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
Remove and install with ring spanner 3337
Checking:
=> Repair group 24; Check functions; Check Lambda probe and Lambda regulation after catalyst
6 cyl. Injection engine, Mechanics
Check functions
Check Lambda probe and Lambda regulation after catalyst
Connector
Black,4-pin
Lambda probe 2 bank 1 after catalyst (G130)*, 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
Remove and install with ring spanner 3337
Checking:
=> Repair group 24; Check functions; Check Lambda probe and Lambda regulation after catalyst
6 cyl. Injection engine, Mechanics
Check functions
Check Lambda probe and Lambda regulation after catalyst
To front silencer
Double catalyst
Before fitting, install upper heat shield
Behind pipe junction with stop for double clamp
Clip
Connector
Brown, 6-pin
Lambda probe 1 bank 2 before catalyst (G108)*, 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
Remove and install with ring spanner 3337
Checking:
=> Repair group 24; Check functions; Check Lambda probe and Lambda regulation before catalyst
6 cyl. Injection engine, Mechanics
Check functions
Check Lambda probe and Lambda regulation before catalyst
Washer
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.
Ask about my car →Other VW procedures
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- Checking camshaft adjustment
- Checking Lambda probe and Lambda regulation before catalyst
- Checking Lambda probe heating for Lambda probe before catalyst
- Checking Lambda probe heating for Lambda probe after catalyst
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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.