2004-2010 Audi A8 Lower Radiator Coolant Hose / Line 4E0121055AF
OEM Part #: 4E0-121-055-AF (4E0121055AF)
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The exact part you’ll receive — not a stock photo.
$39.99
Used
Donor2008 Audi A8 · 4.2L
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Genuine OEM Used
SKU: 684632
Donor Vehicle: 2008 Audi A8 · 4.2L
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$39.99
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Audi lower radiator coolant hose/line, OEM 4E0121055AF — a genuine used V8 cooling system hose from a donor Audi A8 Quattro. This coolant hose carries coolant between the radiator and engine block on 4.2L V8 engines (both 4163cc and 4172cc naturally aspirated DOHC). When the hose degrades, common symptoms include external coolant leaks, visible cracking or swelling, and engine overheating due to loss of coolant pressure.
Specifications
| Fits Vehicle Model | A8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4E0-121-055-AF (4E0121055AF) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 13 vehicle configurations across 1 make, 2004-2010.
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 13 vehicle configurations — 7 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2010 | Audi | A8 | Quattro L Sedan | 4.2L V8 | |
| 2005 | Audi | A8 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BVJ |
| 2009 | Audi | A8 | Quattro L Sedan | 4.2L V8 | |
| 2009 | Audi | A8 | Quattro Sedan | 4.2L V8 | |
| 2005 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BVJ |
| 2007 | Audi | A8 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BVJ |
| 2006 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BVJ |
| 2006 | Audi | A8 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BVJ |
| 2008 | Audi | A8 | Quattro L Sedan | 4.2L V8 | |
| 2008 | Audi | A8 | Quattro Sedan | 4.2L V8 | |
| 2007 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BVJ |
| 2004 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BVJ |
| 2010 | Audi | A8 | Quattro Sedan | 4.2L V8 |