2005-2009 Audi A8 Coolant Hose / Line / Tube 4E0121400J
OEM Part #: 4E0-121-400-J (4E0121400J)
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The exact part you’ll receive — not a stock photo.
$85.49
Used
Donor2005 Audi A8 · 6.0L
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Genuine OEM Used
SKU: 681672
Donor Vehicle: 2005 Audi A8 · 6.0L
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$85.49
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A used genuine OEM Audi coolant hose / line / tube, part number 4E0121400J, sourced from a donor A8 Quattro. This hose is specifically for the 6.0L W12 engine (5998cc, DOHC, naturally aspirated). Over time, the rubber can crack or develop pinhole leaks, leading to coolant loss and potential overheating. As a coolant hose, it circulates antifreeze between the engine and radiator to maintain proper operating temperature.
Specifications
| Fits Vehicle Model | A8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4E0-121-400-J (4E0121400J) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 5 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 5 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2008 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2009 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2005 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2007 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2006 | Audi | A8 | Quattro L Sedan | 6.0L W12 |