2006 Audi A4 Quattro engine air filter: Sizes & Replacement Parts
2.0L I4: Bosch 5508WS; 3.0L V6: Bosch 5508WS; 3.2L V6: Bosch 5508WS. Pick the engine tab that matches your car before ordering.
Looking for the cabin / A/C air filter instead? 2006 Audi A4 Quattro cabin air filter →
Choose your engine size
The 2006 Audi A4 Quattro uses different engine air filter part numbers by engine. Select your engine, then use the part numbers in that panel.
Not sure which engine you have?
Check the sticker on the driver's door jamb (open the door and look at the door frame) — it lists the engine displacement. You can also look at the rear of the car: a V6 badge means the larger engine; no engine badge typically indicates the base 4-cylinder (I4). When in doubt, check your owner's manual or the underhood emissions sticker.
2.0L I4
Main catalog answer: Bosch 5508WS
- Filter type
- Basic
- Sources
- Bosch Auto Parts
Links search this exact part number. Confirm 2006 Audi A4 Quattro and the 2.0L I4 engine in the seller's vehicle selector before checkout.
3.0L V6
Main catalog answer: Bosch 5508WS
- Filter type
- Basic
- Sources
- Bosch Auto Parts
Links search this exact part number. Confirm 2006 Audi A4 Quattro and the 3.0L V6 engine in the seller's vehicle selector before checkout.
3.2L V6
Main catalog answer: Bosch 5508WS
- Filter type
- Basic
- Sources
- Bosch Auto Parts
Links search this exact part number. Confirm 2006 Audi A4 Quattro and the 3.2L V6 engine in the seller's vehicle selector before checkout.
Fitment scope and limits
The 2006 Audi A4 Quattro can use different engine air filters by engine size. Use the row for 2.0L I4, 3.0L V6, 3.2L V6, then confirm that same engine in the seller's vehicle selector.
The checked catalogs did not provide source-backed replacement interval for this exact record, so this page does not publish those fields.
Catalogs can list more than one part number for the same vehicle. Use this page to compare the listed numbers, then use the seller's vehicle selector before ordering.
Source notes
Listed by Bosch Auto Parts. These part numbers come from filter manufacturer catalogs. Use the source trail below to see which catalog supported this page.
| Source | Role | Supports | Checked |
|---|---|---|---|
| Bosch Auto Parts | Primary | Filters for 3 engine options | 2026-06-25 |
Checked catalogs: Bosch Auto Parts. Replacement interval is not listed unless a source provides it for this exact vehicle and engine row.
2006 Audi A4 Quattro maintenance checklist
One part checked. Look up the rest while you're here.
- Cabin air filter 2006 Audi A4 Quattro cabin filter part numbers
- Engine air filter Match engine row Checked
- Oil type & capacity 2006 Audi A4 Quattro oil viscosity & fill amount
Questions this page answers
What engine air filter fits the 2006 Audi A4 Quattro 2.0L I4?
Checked catalogs list Bosch 5508WS for the 2006 Audi A4 Quattro 2.0L I4. The primary listing is Bosch 5508WS. Confirm this part number in the seller's vehicle selector before ordering.
What engine air filter fits the 2006 Audi A4 Quattro 3.0L V6?
Checked catalogs list Bosch 5508WS for the 2006 Audi A4 Quattro 3.0L V6. The primary listing is Bosch 5508WS. Confirm this part number in the seller's vehicle selector before ordering.
What engine air filter fits the 2006 Audi A4 Quattro 3.2L V6?
Checked catalogs list Bosch 5508WS for the 2006 Audi A4 Quattro 3.2L V6. The primary listing is Bosch 5508WS. Confirm this part number in the seller's vehicle selector before ordering.
How do I know which engine my 2006 Audi A4 Quattro has?
Check the sticker on the driver's door jamb — it lists the engine displacement. A "V6" badge on the rear of the car means the larger engine. No engine badge typically means the base 4-cylinder (I4). When in doubt, check your owner's manual or the underhood emissions sticker.
Is the 2006 Audi A4 Quattro engine air filter the same across all engine options?
The 2006 Audi A4 Quattro can use different engine air filters by engine size. Use the row for 2.0L I4, 3.0L V6, 3.2L V6, then confirm that same engine in the seller's vehicle selector.
Does this page confirm a replacement interval?
The checked catalogs did not provide source-backed replacement interval for this exact record, so this page does not publish those fields.
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