How to remove and inspect the air filter box and its components on 2006 Audi A4?

Take off the cover of the air filter box and unattach the fresh air intake duct by unconnecting the rear. Take out screws on the front part and draw it out. Unscrew the electrical connector to the sensor, loosen clamps and unscrew duct. Take off the mounting fastener and check the rubber grommet and then put it back together.

Genuine 2006 Audi A4 Air Filter Box

Air Filter Housing

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2006 Audi A4 Air Cleaner Assembly Part Number: 03G-133-837
$330.21 MSRP: $462.49
You Save: $132.28 (29%)
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Product Specifications
- Other Name: Air Cleaner
- Item Weight: 5.10 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 03G-133-837
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following 2006 Audi A4 Submodels:
- Base, Cabriolet | 4 Cyl 2.0 L GAS
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2006 Audi A4 Air Cleaner Assembly Part Number: 06B-133-837-AJ
$336.16 MSRP: $470.82
You Save: $134.66 (29%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Air Cleaner
- Item Weight: 5.00 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 06B-133-837-AJ
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following 2006 Audi A4 Submodels:
- Base, Cabriolet | 4 Cyl 1.8 L GAS
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2006 Audi A4 Air Cleaner Assembly Part Number: 06E-133-837-D
$354.62 MSRP: $496.67
You Save: $142.05 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Air Cleaner
- Item Weight: 5.10 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 06E-133-837-D
- Warranty: This genuine part is guaranteed by Audi's factory warranty.
Fits the following 2006 Audi A4 Submodels:
- Base | 6 Cyl 3.2 L GAS

2006 Audi A4 Air Filter Box Parts and Q&A

Q: How to remove and inspect the air filter box and its components on 2006 Audi A4?
A: Take off the cover of the air filter box and unattach the fresh air intake duct by unconnecting the rear. Take out screws on the front part and draw it out. Unscrew the electrical connector to the sensor, loosen clamps and unscrew duct. Take off the mounting fastener and check the rubber grommet and then put it back together.