1998-2005 Audi / Volkswagen Auxiliary Coolant / Water Pump 078121601B
OEM Part #: 078-121-601-B (078121601B)
Actual photo
The exact part you’ll receive — not a stock photo.
$59.99
Used
Donor2003 Volkswagen PASSAT · 2.8L
✓ Free Same Day Shipping on orders by noon CT
Only 1 in stock — no guaranteed restock
Genuine OEM Used
SKU: 702144
Donor Vehicle: 2003 Volkswagen PASSAT · 2.8L
3 photos
$59.99
30-Day Returns
- Genuine OEM — real photos
- 30-day returns on eligible parts
- eBay Top Rated · 100,000+ positive ratings
- Ships from our own indoor warehouse
A used genuine OEM auxiliary coolant / water pump, part number 078121601B, from a donor vehicle. This pump also replaces 078121601. It circulates coolant through the secondary cooling loop to maintain consistent engine temperature, particularly after shutdown. A common failure symptom is a lack of coolant flow to the heater core or a persistent low-coolant warning. This part must be installed by a qualified technician and is not a safety-critical component. It was removed from an Audi or Volkswagen with a 2.7L or 2.8L V6 engine.
Specifications
| Fits Vehicle Model | A6, Allroad, Passat, S4 |
| Fits Vehicle Make | Audi, Volkswagen |
| OEM Part No | 078-121-601-B (078121601B) |
| Compatible OEM Part No | 078-121-601 |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 46 vehicle configurations across 2 makes, 1998-2005.
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 46 vehicle configurations — 15 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2003 | Volkswagen | Passat | Wagon | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2001 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2001 | Audi | A6 | Sedan | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 007001 |
| 1999 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 2002 | Volkswagen | Passat | 4 Sedan | 2.8L V6 | |
| 2004 | Volkswagen | Passat | 4 Sedan | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2004 | Volkswagen | Passat | 4 Wagon | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2005 | Volkswagen | Passat | 4 Wagon | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2000 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2004 | Volkswagen | Passat | Sedan | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2001 | Audi | A6 | Quattro Sedan | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 007001 |
| 2000 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 2001 | Audi | A6 | Quattro Wagon | 2.8L V6 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 007001 |
| 1999 | Audi | A6 | Quattro Wagon | 2.8L V6 | |
| 1999 | Audi | A6 | Sedan | 2.8L V6 | |
| 2001 | Volkswagen | Passat | 4 Wagon | 2.8L V6 | |
| 2002 | Volkswagen | Passat | 4 Wagon | 2.8L V6 | |
| 2005 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2003 | Volkswagen | Passat | 4 Wagon | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2002 | Volkswagen | Passat | Wagon | 2.8L V6 | |
| 2002 | Volkswagen | Passat | Sedan | 2.8L V6 | |
| 2005 | Volkswagen | Passat | Sedan | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2001 | Volkswagen | Passat | Wagon | 2.8L V6 | |
| 2004 | Volkswagen | Passat | Wagon | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2003 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2001 | Volkswagen | Passat | Sedan | 2.8L V6 | |
| 2003 | Volkswagen | Passat | Sedan | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2001 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 1998 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 2003 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2001 | Audi | S4 | Wagon | 2.7L V6 Turbo | |
| 2001 | Volkswagen | Passat | 4 Sedan | 2.8L V6 | |
| 2000 | Audi | S4 | Sedan | 2.7L V6 Turbo | |
| 1998 | Audi | A6 | Sedan | 2.8L V6 | |
| 2002 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2000 | Audi | A6 | Sedan | 2.8L V6 | |
| 2001 | Audi | S4 | Sedan | 2.7L V6 Turbo | |
| 2002 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2005 | Volkswagen | Passat | 4 Sedan | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2000 | Audi | A6 | Quattro Wagon | 2.8L V6 | |
| 2005 | Volkswagen | Passat | Wagon | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2004 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2004 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2002 | Audi | S4 | Sedan | 2.7L V6 Turbo | |
| 2003 | Volkswagen | Passat | 4 Sedan | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2002 | Audi | S4 | Wagon | 2.7L V6 Turbo |