Air Filter Specification
Verified OEM & Service Reference2021 Audi A6 55 TFSI 3.0L V6 Turbo (C8) — Air Filter
Recommended interval: Every 15,000–30,000 miles (inspect annually)
Engine / Trim Variant
OEM Part Number
4K0-133-843-A
Quick Purchase
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Compatible Aftermarket Options
Direct OEM cross-referencesNo aftermarket cross-reference listed yet. Search directly for compatible air filter options:
Search 2021 Audi A6 55 TFSI (4K0-133-843-A) on AmazonAir Filter Fitment by Engine / Trim (2021 Audi A6)
| Engine / Trim | Oil Spec & Capacity | OEM Oil Filter |
|---|---|---|
| 45 TFSI (2.0L Turbo I4) | 0W-20 • 5.7 qt (5.4L) | 06L-115-562-B |
| 55 TFSI (3.0L V6 Turbo) | 0W-20 • 7.4 qt (7.0L) | 06M-198-405-F |
DIY Fitment & Verification Checklist for 2021 Audi A6
- Confirm your engine code or trim variant above before ordering parts, as mid-year production changes can affect air filter fitment.
- When purchasing OEM or aftermarket brands (Motorcraft, ACDelco, Mopar, Wix, Fram, Mobil 1, Bosch, NGK), cross-check the Amazon Garage Confirmed Fit badge with your 17-digit VIN.
- Always consult your 2021 Audi A6 owner's manual for exact torque specs and fluid service intervals.
Sources: NHTSA vPIC & OEM Service SpecificationsReport an inaccurate spec or part number
Frequently Asked Questions
What is the OEM air filter specification for a 2021 Audi A6?
The primary OEM air filter part number / specification for the 2021 Audi A6 55 TFSI 3.0L V6 Turbo (C8) is 4K0-133-843-A.
Which aftermarket air filter brands fit the 2021 Audi A6?
Use your 17-digit VIN to confirm direct-fit aftermarket air filter replacements on Amazon.