Audi / Volkswagen Harmonic Balancer / Crankshaft / Crank Pulley 078105251Q
OEM Part #: 078-105-251-Q (078105251Q)
This page covers one exact OEM part number. Every unit we stocked has sold.
We may be able to get another
Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:
Other Crankshaft Pulley / Harmonic Balancer that may fit your vehicle
Harmonic Balancer / Crankshaft / Crank Pulley
$49.99
Fits 1995–2006 Audi & Volkswagen
OEM: 078105251R
Harmonic Balancer / Crankshaft / Crank Pulley
$48.99
Fits 1998–2018 Audi & Volkswagen
OEM: 06A105243E
Harmonic Balancer / Crankshaft / Crank Pulley
$24.99
Fits 1995–2006 Audi & Volkswagen
OEM: 078105251L
Harmonic Balancer / Crankshaft / Crank Pulley
$29.99
Fits 2005–2015 Audi & Volkswagen
OEM: 06F105243H
Harmonic Balancer / Crankshaft / Crank Pulley
$22.38
Fits 2004–2009 Audi & Volkswagen
OEM: 079105251E
Harmonic Balancer / Crankshaft / Crank Pulley
$22.11
Fits 2005–2012 Audi
OEM: 06E105251C
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The OEM harmonic balancer, also known as the crankshaft pulley or vibration damper, plays a critical role in reducing torsional vibration from the engine's crankshaft. It is situated at the front of the engine, directly attached to the crankshaft, and interfaces with the accessory belt system to drive various components. This part is crucial for maintaining engine stability and efficiency, particularly in models like the 2000-2005 Volkswagen Passat (OEM part number: 078105251Q) and the 1996-2006 Audi A4, A6, and S4 with 2.8L or 3.0L engines. Common issues requiring replacement include damage from wear or misalignment, leading to belt slippage or engine noise. Interchangeable part numbers include 078105251L and 078105263G, ensuring compatibility with a range of V6 engine configurations.
Specifications
| Fits Vehicle Model | A4, A6, Allroad, Passat, S4 |
| Fits Vehicle Make | Audi, Volkswagen |
| OEM Part No | 078-105-251-Q (078105251Q) |
| Compatible OEM Part No | 078-105-251-L |
| Category | Rotating Assembly |
Compatible Vehicles
Fits 82 vehicle configurations across 2 makes, 1998-2006.
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 82 vehicle configurations — 29 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 1998 | Audi | A6 | Sedan | 2.8L V6 | |
| 1998 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 1999 | Audi | A4 | Sedan | 2.8L V6 | |
| 1999 | Audi | A4 | Quattro Wagon | 2.8L V6 | For Vehicles with Engine Code(s) AHA, ATQ |
| 1999 | Audi | A4 | Quattro Sedan | 2.8L V6 | For Vehicles with Engine Code(s) AHA, ATQ |
| 1999 | Audi | A6 | Sedan | 2.8L V6 | |
| 1999 | Audi | A6 | Quattro Wagon | 2.8L V6 | |
| 1999 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 2000 | Audi | A4 | Sedan | 2.8L V6 | |
| 2000 | Audi | A4 | Quattro Wagon | 2.8L V6 | For Vehicles with Engine Code(s) AHA, ATQ |
| 2000 | Audi | A4 | Quattro Sedan | 2.8L V6 | For Vehicles with Engine Code(s) AHA, ATQ |
| 2000 | Audi | A6 | Sedan | 2.8L V6 | |
| 2000 | Audi | A6 | Quattro Wagon | 2.8L V6 | |
| 2000 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2000 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 2000 | Audi | S4 | Sedan | 2.7L V6 Turbo | For Vehicles with Engine Code(s) APB |
| 2001 | Audi | A4 | Sedan | 2.8L V6 | |
| 2001 | Audi | A4 | Quattro Wagon | 2.8L V6 | For Vehicles with Engine Code(s) AHA, ATQ |
| 2001 | Audi | A4 | Quattro Sedan | 2.8L V6 | For Vehicles with Engine Code(s) AHA, ATQ |
| 2001 | Audi | A6 | Sedan | 2.8L V6 | |
| 2001 | Audi | A6 | Quattro Wagon | 2.8L V6 | |
| 2001 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2001 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 2001 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2001 | Audi | S4 | Wagon | 2.7L V6 Turbo | For Vehicles with Engine Code(s) APB |
| 2001 | Audi | S4 | Sedan | 2.7L V6 Turbo | For Vehicles with Engine Code(s) APB |
| 2002 | Audi | A4 | Sedan | 3.0L V6 | |
| 2002 | Audi | A4 | Quattro Wagon | 3.0L V6 | |
| 2002 | Audi | A4 | Quattro Sedan | 3.0L V6 | |
| 2002 | Audi | A6 | Sedan | 3.0L V6 | |
| 2002 | Audi | A6 | Quattro Wagon | 3.0L V6 | |
| 2002 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2002 | Audi | A6 | Quattro Sedan | 3.0L V6 | |
| 2002 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2002 | Audi | S4 | Wagon | 2.7L V6 Turbo | For Vehicles with Engine Code(s) APB |
| 2002 | Audi | S4 | Sedan | 2.7L V6 Turbo | For Vehicles with Engine Code(s) APB |
| 2003 | Audi | A4 | Sedan | 3.0L V6 | |
| 2003 | Audi | A4 | Convertible | 3.0L V6 | For Vehicles with Engine Code(s) AVK, BGN |
| 2003 | Audi | A4 | Quattro Wagon | 3.0L V6 | |
| 2003 | Audi | A4 | Quattro Sedan | 3.0L V6 | |
| 2003 | Audi | A6 | Sedan | 3.0L V6 | |
| 2003 | Audi | A6 | Quattro Wagon | 3.0L V6 | |
| 2003 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2003 | Audi | A6 | Quattro Sedan | 3.0L V6 | |
| 2003 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2004 | Audi | A4 | Sedan | 3.0L V6 | |
| 2004 | Audi | A4 | Convertible | 3.0L V6 | For Vehicles with Engine Code(s) AVK, BGN |
| 2004 | Audi | A4 | Quattro Wagon | 3.0L V6 | |
| 2004 | Audi | A4 | Quattro Sedan | 3.0L V6 | |
| 2004 | Audi | A4 | Quattro Convertible | 3.0L V6 | For Vehicles with Engine Code(s) AVK, BGN |
| 2004 | Audi | A6 | Sedan | 3.0L V6 | |
| 2004 | Audi | A6 | Quattro Wagon | 3.0L V6 | |
| 2004 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2004 | Audi | A6 | Quattro Sedan | 3.0L V6 | |
| 2004 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2005 | Audi | A4 | Sedan | 3.0L V6 | |
| 2005 | Audi | A4 | Convertible | 3.0L V6 | For Vehicles with Engine Code(s) AVK, BGN |
| 2005 | Audi | A4 | Quattro Wagon | 3.0L V6 | |
| 2005 | Audi | A4 | Quattro Sedan | 3.0L V6 | |
| 2005 | Audi | A4 | Quattro Convertible | 3.0L V6 | For Vehicles with Engine Code(s) AVK, BGN |
| 2005 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2006 | Audi | A4 | Quattro Convertible | 3.0L V6 | For Vehicles with Engine Code(s) AVK, BGN |
| 2001 | Volkswagen | Passat | 4 Sedan | 2.8L V6 | |
| 2001 | Volkswagen | Passat | 4 Wagon | 2.8L V6 | |
| 2001 | Volkswagen | Passat | Sedan | 2.8L V6 | |
| 2001 | Volkswagen | Passat | Wagon | 2.8L V6 | |
| 2002 | Volkswagen | Passat | 4 Sedan | 2.8L V6 | |
| 2002 | Volkswagen | Passat | 4 Wagon | 2.8L V6 | |
| 2002 | Volkswagen | Passat | Sedan | 2.8L V6 | |
| 2002 | Volkswagen | Passat | Wagon | 2.8L V6 | |
| 2003 | Volkswagen | Passat | Sedan | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2003 | Volkswagen | Passat | Wagon | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2003 | Volkswagen | Passat | 4 Sedan | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2003 | Volkswagen | Passat | 4 Wagon | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2004 | Volkswagen | Passat | Sedan | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2004 | Volkswagen | Passat | Wagon | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 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 Sedan | 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 |
| 2005 | Volkswagen | Passat | Sedan | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |
| 2005 | Volkswagen | Passat | Wagon | 2.8L V6 | For Vehicles with Engine Code(s) ATQ |