Removing and installing coolant pipe (front) - vehicles with engine code letters BUG, BUN — AUDI

🧭 Before you start

Fits: Audi Q7 (4L, 2005–2015)

• Opens: coolant
• Renewed: o-ring

Don't miss

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

🔧 Engine codes this applies to

📋 Procedure

1. Drain coolant .
2. Remove intake manifold (top section) 23.
3. Remove toothed belt for high-pressure pump 23.
4. Remove high-pressure pump 23.
5. Disconnect coolant hose (arrow).

6. Unscrew bolt (1) and pull coolant pipe (front) out of cylinder block. [Note: Renew O-ring.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.]
7. Before installing, clean and smoothen sealing surface for O-ring.
8. Lubricate new O-ring with coolant additive and slide onto coolant pipe (front).
9. Install high-pressure pump 23.
10. Install toothed belt for high-pressure pump 23.
11. Install intake manifold (top section) 23.
12. Fill up with coolant .

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