Removing and installing air cleaner (cleaning air intake duct) — AUDI

🧭 Before you start

Fits: Audi A8 D2 (4D)

Don't miss

• When installing the air filter element, make sure it is centred in the mount in the bottom part of the air cleaner.

🔧 Engine codes this applies to

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. Remove engine cover .
2. Remove cover on right in engine compartment (arrows).
3. Unfasten hose clamp (1).
4. Remove top part of air cleaner housing.
5. Pull out old air filter element.

6. Remove top air pipe (arrows). [Note: If the air filter element is severely contaminated or soaked, dirt particles or moisture could ingress as far as the air mass meters and bias the measured air mass value. This would lead to a loss of power on account of a smaller injection quantity being calculated.Always use a genuine air filter element.There must not be any contamination of the entire intake duct as far as the air mass meters.Use a silicone-free lubricant when installing the intake hose.Secure all hose connections with standard clamps Parts catalogue.]
7. Blow out water drain in bottom part of air cleaner housing with compressed air.
8. Remove grit, dirt and leaves from top and bottom part of air cleaner housing using a vacuum cleaner if necessary.
9. Check for grit, dirt and leaves in air mass meter and intake hose (clean air end).
10. Check for contamination of intake duct as far as air filter element.
11. Re-install air pipe.
12. Tightening torque: 10 Nm — 10 Nm (7.4 lb-ft)
13. When installing the air filter element, make sure it is centred in the mount in the bottom part of the air cleaner.
14. Position the top part of the air cleaner carefully on the bottom part, without exerting force. In doing so, make sure the top part of the air cleaner is not at an angle on the air filter element. Pay attention to sealing lip of air filter element (unmetered air).
15. Then screw top part of air cleaner to bottom part.
16. Secure hose clamp.
17. Re-install cover on right in engine compartment as well as engine cover.

🎬 Related video tutorial

Independent AUTODOC tutorial for the same job, filmed on a different model (A6 C5 Avant) — the technique carries over, the fasteners and figures on this page are the ones for your car.

How to change air filter on AUDI A6 C5 Avant

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