2005-2009 Audi A8/S8 Coolant Reservoir / Tank Holder 4E0121424B
OEM Part #: 4E0-121-424-B (4E0121424B)
Actual photo
The exact part you’ll receive — not a stock photo.
$13.71
Used
Donor2005 Audi A8 · 6.0L
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Genuine OEM Used
SKU: 681539
Donor Vehicle: 2005 Audi A8 · 6.0L
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$13.71
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A used OEM Audi Coolant Reservoir / Tank Holder, part number 4E0121424B, this genuine piece replaces the bracket that supports the coolant expansion tank. Also known as a coolant tank holder, a cracked or broken example allows the reservoir to shift, potentially leading to coolant leaks or connection stress.
Specifications
| Fits Vehicle Model | A8, S8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4E0-121-424-B (4E0121424B) |
| 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 |