Removing and installing intermediate flange - engine code letters BDG, BDH — AUDI

🧭 Before you start

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

• Renewed: gaskets

Don't miss

• Renew gaskets and self-locking nuts.Fit all cable ties in the original positions when installing.

🔧 Engine codes this applies to

📐 60 workshop diagrams for AFB

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

📋 Procedure

1. Remove front exhaust pipe with main catalytic converter: vehicles with front-wheel drive , vehicles with four-wheel drive .
2. Remove starter catalytic converter: vehicles with front-wheel drive , vehicles with four-wheel drive .
3. Remove turbocharger .
4. Remove exhaust manifold together with intermediate pipe: left-side , right-side .
5. Detach vacuum hose (3).

6. Remove nuts (2) and bolts (1) and (4).
7. Remove mechanical exhaust gas recirculation valve together with connecting pipe.
8. Release cable tie (1) at rear of heat shield and move wiring clear.
9. Unscrew bolts (arrows) and detach heat shield (2) from intermediate flange.
10. Unbolt coolant pipe at rear of oil filter bracket.
11. Remove top left securing bolt (arrow 1) on engine/gearbox flange.
12. Unscrew bolts (arrows 2).
13. Guide out intermediate flange to rear right. [Note: Renew gaskets and self-locking nuts.Fit all cable ties in the original positions when installing.]
14. Install exhaust manifold together with intermediate pipe: left-side , right-side .
15. Install turbocharger .
16. Install starter catalytic converter: vehicles with front-wheel drive , vehicles with four-wheel drive .
17. Install front exhaust pipe with main catalytic converter: vehicles with front-wheel drive , vehicles with four-wheel drive .

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