Air filter change Audi A4 2001 - 2004 | Haynes Manuals

Air filter change Audi A4 2001 - 2004 | Haynes Manuals

Servicing /

October 2025

1 minute read

Time

0.2 hours

Difficulty

Find your vehicle

- step 1

Air filter location

- step 2

Undo two retaining screws on the air filter body

- step 3

Carefully remove air duct

- step 4

Remove second air duct

- step 5

Undo the MAF sensor plug

- step 6

Now release the air intake

- step 7

Undo the 2 Phillips retaining fixings

- step 8

Carefully lift away the top section of the air filter body

- step 9

View of the air filter cover

- step 10

Air filter in position

- step 11

Now you can lift out the air filter

- step 12

Clean off any debris on the surface of the filter. Replace with new filter if heavily contaminated

- step 13

Check air filter box for debris. Clean if required, now replace the air filter

- step 14

Reassemble the air filter housing

- step 15

Undo the circular clip on the air intake, use a screwdriver for this

- step 16

Relocate wiring

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