Audi A8/S8 Coolant Reservoir / Tank / Bottle 4E0121403H
OEM Part #: 4E0-121-403-H (4E0121403H)
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
Coolant Reservoir / Tank / Bottle Cap
Coolant Reservoir / Tank Cover
Coolant Reservoir / Tank Holder
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This OEM coolant reservoir is a factory-original part designed for select Audi models, ensuring seamless integration and performance. Part number 4E0121403H is compatible with the 2005-2010 Audi A8 Quattro (5.2L, 6.0L engines) and 2007-2010 Audi S8, restoring efficient coolant management in your vehicle. Common issues such as leaks or damage can be resolved with this replacement. Located in the engine bay, the coolant tank plays a crucial role in maintaining optimal engine temperature and preventing overheating. Trust this authentic part to restore your vehicle’s functionality effectively. Alternative part number: 4E0121403E.
Specifications
| Fits Vehicle Model | A8, S8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4E0-121-403-H (4E0121403H) |
| Compatible OEM Part No | 4E0-121-403-E |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 8 vehicle configurations across 1 make, 2005-2009.
View all 8 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2005 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 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 | |
| 2008 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2008 | Audi | S8 | Sedan | 5.2L V10 | |
| 2009 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2009 | Audi | S8 | Sedan | 5.2L V10 |