Removing and installing Y-pipe (left-side): Audi A8 D3 5.2 (BSM, BXA)

🧭 Before you start

Fits: Audi A8 D3 (4E, 2002–2010)

• Renewed: gaskets

Don't miss

• The flexible joint in the front silencer must not be bent more than 10° - damage can otherwise occur.
• Shown in illustration when installed.

🔧 Engine codes this applies to

📋 Procedure

1. Open quick-release fasteners (2) and remove rear noise insulation.
2. Remove bracket for electrical connectors (1 ... 4) for Lambda probes from subframe (arrow).
3. Take electrical connector (1) for Lambda probe 4 after catalytic converter G288 out of bracket on gearbox and unplug it.
4. Unbolt cross piece (front) (arrows). [Note: The flexible joint in the front silencer must not be bent more than 10° - damage can otherwise occur.]
5. Slacken clamp (2).

6. Unscrew bolt (arrow) at bracket for exhaust pipes (left-side).
7. Remove nuts (1) and (2) and detach Y-pipe together with front silencer.
8. Remove nuts (arrows) and detach front silencer (left-side) from Y-pipe. [Note: Shown in illustration when installed.] [Note: Renew gaskets and self-locking nuts.]
9. Install front cross member 40.
10. Align exhaust system so it is free of stress .

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