2004-2005 Audi A8 Coolant Reservoir / Tank / Bottle 4E0121403C
OEM Part #: 4E0-121-403-C (4E0121403C)
This page covers one exact OEM part number. Every unit we stocked has sold.
We may be able to get another
Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:
Other Coolant Reservoir / Tank that may fit your vehicle
Coolant Reservoir / Tank / Bottle
$99.99
Fits 2004–2010 Audi A8
OEM: 4E0121403G
Coolant Reservoir / Tank / Bottle Cap
$6.68
Fits 2002–2011 Audi
OEM: 8E0121321
Coolant Reservoir / Tank Cover
$29.49
Fits 2005–2009 Audi A8 / S8
OEM: 4E0121148B
Coolant Reservoir / Tank Holder
$13.71
Fits 2005–2009 Audi A8 / S8
OEM: 4E0121424B
- Genuine OEM — real photos
- 30-day returns on eligible parts
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- Ships from our own indoor warehouse
Specifications
| Fits Vehicle Model | A8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4E0-121-403-C (4E0121403C) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 3 vehicle configurations across 1 make, 2004-2005.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 3 vehicle configurations — 3 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2004 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BFM, BGK |
| 2005 | Audi | A8 | Quattro Sedan | 4.2L V8 | For Vehicles Where Last 6 Digits of VIN Number are Less Than 020000; For Vehicles with Engine Code(s) BFM, BGK |
| 2005 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles Where Last 6 Digits of VIN Number are Less Than 020000; For Vehicles with Engine Code(s) BFM, BGK |