2001-2005 Audi A6/Allroad Engine Coolant Pipe / Tube / Line 078121075AC
OEM Part #: 078-121-075-AC (078121075AC)
Actual photo
The exact part you’ll receive — not a stock photo.
$88.49
Used
Donor2001 Audi ALLROAD · 2.7L
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Genuine OEM Used
SKU: 688451
Donor Vehicle: 2001 Audi ALLROAD · 2.7L
2 photos
$88.49
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Audi 078121075AC genuine used OEM engine coolant pipe, also called the coolant tube or coolant line. This metal pipe routes antifreeze on the 2.7L twin-turbo V6 found in the A6 and Allroad Quattro. Cracks or corrosion in the original pipe can cause coolant loss, overheating, and low-coolant warnings—a common failure on high-mileage examples.
Specifications
| Fits Vehicle Model | A6, Allroad |
| Fits Vehicle Make | Audi |
| OEM Part No | 078-121-075-AC (078121075AC) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 8 vehicle configurations across 1 make, 2001-2005.
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 |
|---|---|---|---|---|---|
| 2002 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2001 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2003 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2003 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2002 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2004 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2004 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2005 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo |