2005-2009 Audi A8/S8 Coolant Reservoir / Tank Cover 4E0121148B
OEM Part #: 4E0-121-148-B (4E0121148B)
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The exact part you’ll receive — not a stock photo.
$29.49
Used
Donor2005 Audi A8 · 6.0L
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Genuine OEM Used
SKU: 681521
Donor Vehicle: 2005 Audi A8 · 6.0L
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$29.49
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This used genuine Audi coolant reservoir cover, OEM 4E0121148B, was removed from a donor vehicle. Also known as a tank cover, it secures the reservoir and helps maintain coolant system integrity. With age, these covers can become brittle and crack. Fits Audi A8 Quattro and S8 equipped with the 5.2L V10 or 6.0L W12 naturally aspirated engines.
Specifications
| Fits Vehicle Model | A8, S8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4E0-121-148-B (4E0121148B) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 8 vehicle configurations across 1 make, 2005-2009.
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 8 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2006 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2007 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2007 | Audi | S8 | Sedan | 5.2L V10 | |
| 2005 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2008 | Audi | S8 | Sedan | 5.2L V10 | |
| 2009 | Audi | S8 | Sedan | 5.2L V10 | |
| 2009 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2008 | Audi | A8 | Quattro L Sedan | 6.0L W12 |