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Vehicles with front-wheel drive and two catalytic converters - manual gearbox or automatic gearbox 097 — AUDI

Vehicles with front-wheel drive and two catalytic converters - manual gearbox or automatic gearbox 097 on Audi: factory workshop procedure for engines.

Workshop procedure for AUDI — the factory write-up, straight from real workshop data.

factory workshop text 4 engine codes

🔧 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.

ABC ACZ AEJ
Retainer
Replace if damaged
Bending over securing tabs => Fig.
26-10

Centre silencer
Installing stress-free
=>Page
26-12
.

25 Nm
25 Nm
Replace

Right front exhaust pipe
With catalytic converter
Protect from damage by knocks and impacts
Installing stress-free
=>Page
26-12
.

Components of mounting for vehicles with manual gearbox => Fig.
26-8
Components of mounting for vehicles with automatic gearbox 097 =>Fig.
26-9

30 Nm
Replace
Observe the tightening sequence =>Page
26-12

Exhaust manifold
Removing and installing left exhaust manifold => Page
26-54
Removing and installing right exhaust manifold => Page
26-61

25 Nm
Replace

Gasket
Replace
Installation position: connecting piece points downwards

Lambda probe - 55 Nm
Grease only the threads with high-temperature lubricant. The lubricant must not penetrate into the slots on the probe body.
High-temperature lubricant

=> Parts List

Checking:

=> Fuel Injection and Ignition System; Repair group 24
Fuel Injection and Ignition System

Left front exhaust pipe
With catalytic converter
Protect from damage by knocks and impacts
Installing stress-free
=>Page
26-12
.
Components of mounting for vehicles with manual gearbox => Fig.
26-7
Components of mounting for vehicles with automatic gearbox 097 =>Fig.
26-9

AAH? This is the factory text for the model family — variants differ. Check it against your exact car. Check my car — free →

25 Nm
Replace

Sealing ring
Sensitive to impact; take care not to drop

Spring
Spacer tube
25 Nm
Left intermediate pipe
Installing stress-free
=>Page
26-12
.

Clamp
Installation position => Page
26-15
Align exhaust system so it is free of stress before tightening clamp => Page
26-12
Tighten bolted connections evenly to 40 Nm

40 Nm
Right intermediate pipe
Installing stress-free
=>Page
26-12
.

Sealing ring
Sensitive to impact; take care not to drop

25 Nm
Replace

Retaining ring
Replace if damaged
Bending over securing tabs => Fig.
26-11

Rear silencer
Installing stress-free
=>Page
26-12
.

Sealing ring
Sensitive to impact; take care not to drop

Fig.1
Components of left mounting for vehicles with manual gearbox

1 -
Catalytic converter
2 -
Bolt - 25 Nm
3 -
Spacer
4 -
Link
5 -
Buffer
6 -
Plate
7 -
Bolt
8 -
Plate
9 -
Pressure spring
10 -
Spacer
11 -
Nut, self-locking - 25 Nm

Fig.2
Components of right mounting for vehicles with manual gearbox

1 -
Plate
2 -
Buffer - Installation position => Fig.
3
3 -
Plate
4 -
Bolt
5 -
Catalytic converter
6 -
Nut, self-locking - 25 Nm
7 -
Spacer
8 -
Plate
9 -
Pressure spring
10 -
Bolt
11 -
Nut, self-locking - 25 Nm

Fig.3
Installation position of buffer

Rubber bush -A- must be pressed into gearbox support -B- until flush, as shown in the illustration.

Note:

Arrow points in direction of travel.

Fig.4
Components of mounting for vehicles with automatic gearbox 097

1 -
Combi screw - 40 Nm
2 -
Bolt
3 -
Bolt - 40 Nm
4 -
Nut, self-locking - 25 Nm
5 -
Combi screw - 40 Nm
6 -
Catalytic converter, right
7 -
Nut, self-locking - 25 Nm
8 -
Spacer
9 -
Link
10 -
Pressure spring
11 -
Plate
12 -
Bolt
13 -
Link

Fig.5
Installation position of vibration damper for vehicles with automatic gearbox 097

1 -
Combi bolt
2 -
Combi screw - 25 Nm
3 -
Vibration damper
4 -
Nut, self-locking - 25 Nm
5 -
Rear silencer

Fig.6
Bending over securing tabs on brackets of front mounting

Centre and rear silencer

After installing the exhaust system, bend over the securing tabs -arrows- approx. 90°.
Ensure that a distance corresponding to dimension -a- is maintained between retainer and securing tab.
Dimension a = 2 mm

Fig.7
Bend over securing tabs on brackets of rear mounting

Rear silencer

After installing the exhaust system, bend over the securing tabs -arrows- approx. 90°.

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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.

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Workshop data on this page last updated 20 Sep 2026.