Removing and installing coolant pipe going to cylinder block — AUDI

🧭 Before you start

Fits: Audi A6 C5 (4B)

• Renewed: o-ring

🔧 Engine codes this applies to

📐 4 workshop diagrams for BCY

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

📋 Procedure

1. Remove engine .
2. Remove intake manifold .
3. Remove coolant pipe leading to cylinder head .
4. Remove coolant pipe (rear) .
5. Remove bolts (1 ... 4).

6. Release hose clips (arrows) and detach rear air pipe.
7. Remove bolt (1).
8. Detach coolant hoses at coolant pipe (arrows).
9. Pull coolant pipe to rear out of cylinder block.
10. Remove bolt (1).
11. Detach coolant hoses at coolant pipe (arrows).
12. Pull coolant pipe to rear out of cylinder block. [Note: Renew O-ring.Hose connections and hoses for charge air system must be free of oil and grease before assembly. Do NOT use lubricant.Secure all hose connections with the correct type of hose clips (same as original equipment) Parts catalogue.]
13. Install coolant pipe (rear) .
14. Install coolant pipe leading to cylinder head .
15. Install intake manifold and .

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