Removing and installing coolant pipes (at side): Audi A4 Cabriolet B6/B7 / A4 B6/B7 2.0 (BGB, BPG, BPJ, BUL, …)

🧭 Before you start

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

• Renewed: gaskets

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• Renew gaskets and seals.Secure all hose connections with the correct type of hose clips (same as original equipment) Parts catalogue.
• Before installing, clean and smoothen sealing surface for O-ring.

🔧 Engine codes this applies to

📐 5 workshop diagrams for BGB

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

📋 Procedure

1. ⚠ Hot steam/hot coolant can escape - risk of scalding.The cooling system is under pressure when the engine is hot.To allow pressure to dissipate, cover filler cap on coolant expansion tank with cloth and open carefully. — Open filler cap on coolant expansion tank
2. Pull off engine cover panel (arrows).
3. Vehicles with auxiliary heater: remove bolts (arrows) securing exhaust pipe for auxiliary/additional heater to noise insulation.
4. Release quick-release fasteners (1) and (2) and take off front noise insulation.
5. If fitted, open quick-release fasteners (3) and remove rear noise insulation.

6. Drain off coolant .
7. Disconnect coolant hoses (1 and 2) from coolant expansion tank.
8. Unbolt coolant expansion tank (arrow).
9. Unplug electrical connector for coolant shortage indicator switch F66 at bottom of coolant expansion tank and take out switch.
10. Detach charge air hose (arrow) from intake manifold.
11. Unbolt bracket for connectors (arrows) from coolant pipe.
12. Detach wiring harness from coolant pipes.
13. Disconnect coolant hoses (arrows).
14. Remove bolts (1 ... 3) and detach coolant pipes. [Note: Renew gaskets and seals.Secure all hose connections with the correct type of hose clips (same as original equipment) Parts catalogue.]
15. Before installing, clean and smoothen sealing surface for O-ring.
16. Lubricate new O-ring with G12+ and slide onto coolant pipe.
17. Fill up with coolant .

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