Assembly overview - exhaust manifold with catalytic converter and add-on parts — VW
Assembly overview - exhaust manifold with catalytic converter and add-on parts on VW: factory workshop procedure for engines AFK, AHW, AKQ, APE.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📐 21 workshop diagrams for AFK
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.
Assembly overview - exhaust manifold with catalytic converter and add-on parts
Engine codes AHW, AKQ
Warm air collector plate
10 Nm
Exhaust manifold
Gasket
Renew.
Washer
Lock nut, 25 Nm
Flange for
exhaust gas recirculation valve
N18
Item
Marking
Three times on circumference
To front silencer
Heat shield
Front exhaust pipe with catalytic converter
For repair cases
As standard, front exhaust pipe and catalytic converter are installed as a single component. In the event of repair, the front exhaust pipe and catalytic converter are supplied separately with a double clamp to facilitate connection.
Micro catalytic converter
Engine code AKQ only
Lambda probe
G39
, 55 Nm
Grease only thread with
“G5”
.
“G5”
must not get into the slots on the probe body.
Remove and install with
Lambda probe open ring spanner set
3337
.
40 Nm
Gasket
Renew.
Bracket
Engine codes APE, ATN, AUS, AXP, AZD, BCA, BCB
Warm air collector plate
10 Nm
Exhaust manifold with starter catalytic converter
Note
In the case of vehicles with air-conditioner, the bracket for ancillaries must be removed before the exhaust manifold can be removed.
Removing and installing bracket on vehicles with air conditioner:
Heating, air conditioning
Rep. gr.
87
Air conditioner with manual control
Gasket
Renew.
Lock nut, 25 Nm
Renew.
Lambda probe
G39
, 50 Nm
Grease only the thread with
“G5”
;
“G5”
must not get into slots in probe body.
Remove and install with
Lambda probe open ring spanner set
3337
.
Lambda probe after catalytic converter
G130
, 50 Nm
Grease only the thread with
“G5”
;
“G5”
must not get into slots in probe body.
Remove and install with
Lambda probe open ring spanner set
3337
.
To front silencer
Marking
Three times on circumference
Catalytic converter
Heat shield
Front exhaust pipe
Separating point
For repair cases
As standard, front exhaust pipe and catalytic converter are installed as a single component. In the event of repair, the front exhaust pipe and catalytic converter are supplied separately with a double clamp to facilitate connection.
40 Nm
Renew.
Gasket
Renew.
40 Nm
Bracket
Bracket
25 Nm
For repair cases
As standard, front exhaust pipe and catalytic converter are installed as a single component. In the event of repair, the front exhaust pipe and catalytic converter are supplied separately with a double clamp to facilitate connection.
Catalytic converter
Seal
Renew.
Front 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.