Removing and installing front exhaust pipe (left-side) with catalytic converter - vehicles with automatic gearbox 09L — AUDI

🧭 Before you start

Fits: Audi A4 Cabriolet B6/B7 (8H), Audi A4 B6/B7 (8E)

• Renewed: gaskets

Don't miss

• Disregard (item 2).
• Shown from rear with engine removed for illustration purposes.
• Shown in illustration with engine removed.
• Mounting components for exhaust system .

🔧 Engine codes this applies to

📐 26 workshop diagrams for AUK

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. Pull off engine cover panel (rear) (arrows).
2. Unbolt coolant expansion tank (arrow).
3. Unplug electrical wire for coolant shortage indicator switch F66 at bottom of expansion tank and move expansion tank to one side with coolant hoses (1) and (2) attached.
4. Unplug electrical connector (1) for Lambda probe 2 after catalytic converter G131 and move wiring clear (downwards). [Note: Disregard (item 2).]
5. Unscrew nut (2) (accessible from above) connecting front exhaust pipe to exhaust manifold. [Note: Shown from rear with engine removed for illustration purposes.]

6. Remove front left wheel.
7. Vehicles with auxiliary heater: remove bolts (arrows) securing exhaust pipe for auxiliary/additional heater to noise insulation.
8. Open quick-release fasteners (1 … 3) and take off front and rear noise insulation.
9. Unbolt heat shield (arrows) for drive shaft (left-side).
10. Detach drive shaft (left-side) from flange shaft of gearbox.
11. Unscrew nuts (1) and (3) (accessible from below) connecting front exhaust pipe to exhaust manifold. [Note: Shown in illustration with engine removed.]
12. Remove bolts (1) and (2).
13. Detach bracket for front exhaust pipe.
14. Loosen clamps on exhaust system (arrows) and disconnect exhaust pipes.
15. Remove bolts (arrows) for gearbox mountings (left and right).
16. Apply lifting column of engine/gearbox jackV.A.G 1383 A centrally below cast lug on gearbox housing (arrow) and lift gearbox slightly.
17. Remove heat shield for gearbox support (left-side).
18. Unbolt gearbox support (left-side) with gearbox mounting (arrows).
19. Raise gearbox carefully with engine/gearbox jackV.A.G 1383 A until it comes into contact with transmission tunnel (body).
20. Guide out front exhaust pipe downwards between gearbox and subframe, turning as required. [Note: Renew gaskets and self-locking nuts.Fit all cable ties in the original positions when installing.When installing, the Lambda probe wire must always be reattached at the same locations to prevent it from coming into contact with the exhaust pipe.]
21. Install gearbox support with gearbox mounting 37.
22. Install drive shaft 40.
23. Align exhaust system so it is free of stress . [Note: Mounting components for exhaust system .]

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