2005-2009 Audi A6/S4 Coolant Hose / Line 079121107
OEM Part #: 079-121-107 (079121107)
Actual photo
The exact part you’ll receive — not a stock photo.
$8.99
Used
Donor2005 Audi S4 · 4.2L
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4 Available — Select Your Part:
Genuine OEM Used
SKU: 242507
Donor Vehicle: 2005 Audi S4 · 4.2L
$8.99
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Genuine OEM Used
SKU: 216643
Donor Vehicle: 2008 Audi S4 · 4.2L
$8.99
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Genuine OEM Used
SKU: 136564
Donor Vehicle: 2005 Audi A6 · 4.2L
$8.99
30-Day Returns
Genuine OEM Used
SKU: 153363
Donor Vehicle: None Audi Multi Qty
$8.99
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A used Audi OEM Coolant Hose / Line, part number 079121107, removed from a donor vehicle. This genuine hose carries engine coolant between components on 4.2L V8 applications (including the 4163cc and 4172cc naturally aspirated versions). Also known as a coolant line, it’s a common failure point on these engines—aged hoses can crack or leak, causing coolant loss and overheating.
Specifications
| Fits Vehicle Model | A6, S4 |
| Fits Vehicle Make | Audi |
| OEM Part No | 079-121-107 (079121107) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 15 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 15 vehicle configurations — 4 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2005 | Audi | A6 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BNK |
| 2008 | Audi | S4 | Sedan | 4.2L V8 | |
| 2006 | Audi | S4 | Wagon | 4.2L V8 | |
| 2009 | Audi | S4 | Convertible | 4.2L V8 | |
| 2008 | Audi | A6 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BNK |
| 2005 | Audi | S4 | Wagon | 4.2L V8 | |
| 2007 | Audi | S4 | Sedan | 4.2L V8 | |
| 2008 | Audi | S4 | Wagon | 4.2L V8 | |
| 2008 | Audi | S4 | Convertible | 4.2L V8 | |
| 2007 | Audi | A6 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BNK |
| 2006 | Audi | A6 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) BNK |
| 2007 | Audi | S4 | Wagon | 4.2L V8 | |
| 2007 | Audi | S4 | Convertible | 4.2L V8 | |
| 2006 | Audi | S4 | Sedan | 4.2L V8 | |
| 2005 | Audi | S4 | Sedan | 4.2L V8 |