1998-2005 Audi A6/Allroad/S6 Motion Detector / Alarm Sensor Right 4B0951178A
OEM Part #: 4B0-951-178-A (4B0951178A)
Actual photo
The exact part you’ll receive — not a stock photo.
$5.99
Side: Right
Used
Donor2001 Audi ALLROAD · 2.7L
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Genuine OEM Used
SKU: 688190
Donor Vehicle: 2001 Audi ALLROAD · 2.7L
2 photos
$5.99
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Genuine OEM Used
SKU: 615184
Donor Vehicle: 2001 Audi A6 · 2.8L
2 photos
$5.99
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Genuine OEM Used
SKU: 247368
Donor Vehicle: 2001 Audi A6 · 4.2L
2 photos
$5.99
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Genuine OEM Used
SKU: 153136
Donor Vehicle: None Audi Multi Qty
2 photos
$5.99
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Genuine OEM Used
SKU: 239896
Donor Vehicle: 2001 Audi ALLROAD · 2.7
2 photos
$5.99
30-Day Returns
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Used Audi Motion Detector / Alarm Sensor, OEM part number 4B0951178A, pulls directly from a donor vehicle. This genuine right-side sensor monitors the cabin for unauthorized movement, triggering the alarm if motion is detected. Interchange numbers: none listed — only the original 4B0951178A applies. Designed for C5-chassis A6, S6, and Allroad Quattro models. A common failure is false alarms (trip-happy sensor) or the system failing to arm, leaving the vehicle unprotected.
Specifications
| Fits Vehicle Model | A6, Allroad, S6 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4B0-951-178-A (4B0951178A) |
| Side | Right |
| Category | Sensors |
Compatible Vehicles
Fits 39 vehicle configurations across 1 make, 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 39 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2001 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2002 | Audi | A6 | Quattro Wagon | 3.0L V6 | |
| 2002 | Audi | A6 | Quattro Sedan | 3.0L V6 | |
| 2004 | Audi | A6 | Quattro Sedan | 3.0L V6 | |
| 2003 | Audi | A6 | Quattro Sedan | 3.0L V6 | |
| 2003 | Audi | A6 | Quattro Wagon | 3.0L V6 | |
| 2002 | Audi | A6 | Sedan | 3.0L V6 | |
| 2004 | Audi | A6 | Sedan | 3.0L V6 | |
| 2004 | Audi | A6 | Quattro Wagon | 3.0L V6 | |
| 2003 | Audi | A6 | Sedan | 3.0L V6 | |
| 2003 | Audi | S6 | Wagon | 4.2L V8 | |
| 2005 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2000 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2001 | Audi | A6 | Sedan | 2.8L V6 | |
| 2002 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 1998 | Audi | A6 | Sedan | 2.8L V6 | |
| 2000 | Audi | A6 | Sedan | 2.8L V6 | |
| 2001 | Audi | A6 | Quattro Sedan | 4.2L V8 | |
| 1998 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 2001 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2003 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2000 | Audi | A6 | Quattro Sedan | 4.2L V8 | |
| 2003 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2002 | Audi | S6 | Wagon | 4.2L V8 | |
| 2002 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2004 | Audi | A6 | Quattro Sedan | 2.7L V6 Turbo | |
| 2002 | Audi | A6 | Quattro Sedan | 4.2L V8 | |
| 2004 | Audi | Allroad | Quattro Wagon | 2.7L V6 Turbo | |
| 2004 | Audi | A6 | Quattro Sedan | 4.2L V8 | |
| 2005 | Audi | Allroad | Quattro Wagon | 4.2L V8 | |
| 2000 | Audi | A6 | Quattro Wagon | 2.8L V6 | |
| 2003 | Audi | A6 | Quattro Sedan | 4.2L V8 | |
| 1999 | Audi | A6 | Sedan | 2.8L V6 | |
| 1999 | Audi | A6 | Quattro Wagon | 2.8L V6 | |
| 2001 | Audi | A6 | Quattro Wagon | 2.8L V6 | |
| 2000 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 2001 | Audi | A6 | Quattro Sedan | 2.8L V6 | |
| 2004 | Audi | Allroad | Quattro Wagon | 4.2L V8 | |
| 1999 | Audi | A6 | Quattro Sedan | 2.8L V6 |