2005-2009 Audi A8 Engine Knock Sensor (550MM) 07C905377AJ
OEM Part #: 07C-905-377-AJ (07C905377AJ)
Actual photo
The exact part you’ll receive — not a stock photo.
$56.49
Used
Donor2005 Audi A8 · 6.0L
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Genuine OEM Used
SKU: 681645
Donor Vehicle: 2005 Audi A8 · 6.0L
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$56.49
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This used Audi Engine Knock Sensor (OEM 07C905377AJ) is a genuine factory component from a donor vehicle. Also supersedes 07C905377AG. For the 6.0L W12 in the Audi A8 Quattro, this knock sensor detects abnormal combustion and sends a signal to the ECU to adjust ignition timing. A failing sensor can produce audible engine pinging, trigger a check engine light, and reduce performance—making this a critical part for restoring smooth operation.
Specifications
| Fits Vehicle Model | A8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 07C-905-377-AJ (07C905377AJ) |
| Compatible OEM Part No | 07C-905-377-AG |
| Category | Sensors |
Compatible Vehicles
Fits 5 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 5 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2008 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2009 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2005 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2007 | Audi | A8 | Quattro L Sedan | 6.0L W12 | |
| 2006 | Audi | A8 | Quattro L Sedan | 6.0L W12 |