1998-2005 Audi / Volkswagen Engine Knock Sensor - Brown 078905377

OEM Part #: 078-905-377 (078905377)

$8.99
Used
DonorNone Audi Multi Qty
SKU: 137981 · 30-Day Returns
✓ Free Same Day Shipping on orders by noon CT
6 Available — Select Your Part:
Engine Knock Sensor - Brown 078905377 — Used (SKU 137981)
Genuine OEM Used SKU: 137981 Donor Vehicle: None Audi Multi Qty 2 photos
$8.99
30-Day Returns
Engine Knock Sensor - Brown 078905377 — Used (SKU 141735)
Genuine OEM Used SKU: 141735 Donor Vehicle: 2001 Audi A6 · 2.8L 2 photos
$8.99
30-Day Returns
Engine Knock Sensor - Brown 078905377 — Used (SKU 141736)
Genuine OEM Used SKU: 141736 Donor Vehicle: 2001 Audi A6 · 2.8L 2 photos
$8.99
30-Day Returns
Engine Knock Sensor - Brown 078905377 — Used (SKU 139423)
Genuine OEM Used SKU: 139423 Donor Vehicle: 2002 Audi ALLROAD · 2.7 2 photos
$8.99
30-Day Returns
Engine Knock Sensor - Brown 078905377 — Used (SKU 669321)
Genuine OEM Used SKU: 669321 Donor Vehicle: 2000 Audi A4 · 2.8L 2 photos
$9.99
30-Day Returns
Engine Knock Sensor - Brown 078905377 — Used (SKU 669320)
Genuine OEM Used SKU: 669320 Donor Vehicle: 2000 Audi A4 · 2.8L 2 photos
$9.99
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 OEM Audi engine knock sensor (brown) part number 078905377 is now available. Also known simply as a knock sensor, this genuine component detects pre-ignition and detonation in the cylinder, sending a signal to adjust timing and prevent engine damage. It was originally fitted to 2.7L twin-turbo V6 and 2.8L naturally aspirated V6 engines from Audi and VW. A failing knock sensor can cause a check engine light, reduced power, or pinging under load.

Specifications

Specifications for Engine Knock Sensor - Brown 078905377
Fits Vehicle ModelA4, A6, Allroad, Passat, S4
Fits Vehicle MakeAudi, Volkswagen
OEM Part No078-905-377 (078905377)
CategorySensors

Compatible Vehicles

Fits 56 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.

Audi

  • A4 1999-2001 · 9 variants 7 with notes
  • A6 1998-2004 · 13 variants 3 with notes
  • Allroad 2001-2005 · 5 variants 5 with notes
  • S4 2000-2002 · 5 variants 5 with notes

Volkswagen

  • Passat 2000-2005 · 24 variants
View all 56 vehicle configurations — 20 with fitment notes
Full vehicle fitment list for Engine Knock Sensor - Brown 078905377
Year Make Model Trim Engine Note
1998 Audi A6 Quattro Sedan 2.8L V6
1998 Audi A6 Sedan 2.8L V6
2000 Audi A6 Quattro Sedan 2.8L V6
2000 Audi A4 Sedan 2.8L V6
2000 Volkswagen Passat Wagon 2.8L V6
2000 Audi A4 Quattro Sedan 2.8L V6 For Vehicles with Engine Code(s) AHA, ATQ
2005 Volkswagen Passat 4 Wagon 2.8L V6
2002 Volkswagen Passat Wagon 2.8L V6
2005 Volkswagen Passat Sedan 2.8L V6
2004 Volkswagen Passat Sedan 2.8L V6
2003 Volkswagen Passat 4 Wagon 2.8L V6
2001 Volkswagen Passat 4 Wagon 2.8L V6
2000 Audi A6 Quattro Sedan 2.7L V6 Turbo
2001 Audi A6 Quattro Sedan 2.7L V6 Turbo
2001 Audi A6 Sedan 2.8L V6
2002 Volkswagen Passat 4 Sedan 2.8L V6
2000 Volkswagen Passat 4 Sedan 2.8L V6
2004 Volkswagen Passat 4 Sedan 2.8L V6
2004 Volkswagen Passat 4 Wagon 2.8L V6
2003 Volkswagen Passat Wagon 2.8L V6
2001 Audi A4 Quattro Wagon 2.8L V6 For Vehicles with Engine Code(s) AHA, ATQ
2001 Audi A6 Quattro Sedan 2.8L V6
2002 Volkswagen Passat Sedan 2.8L V6
2001 Audi A4 Quattro Sedan 2.8L V6 For Vehicles with Engine Code(s) AHA, ATQ
2000 Volkswagen Passat Sedan 2.8L V6
2005 Audi Allroad Quattro Wagon 2.7L V6 Turbo For Vehicles with Engine Code(s) APB
2000 Volkswagen Passat 4 Wagon 2.8L V6
2001 Audi A4 Sedan 2.8L V6
2000 Audi A4 Quattro Wagon 2.8L V6 For Vehicles with Engine Code(s) AHA, ATQ
2001 Audi A6 Quattro Wagon 2.8L V6
2004 Audi A6 Quattro Sedan 2.7L V6 Turbo For Vehicles with Engine Code(s) APB
2002 Audi A6 Quattro Sedan 2.7L V6 Turbo For Vehicles with Engine Code(s) APB
2003 Audi Allroad Quattro Wagon 2.7L V6 Turbo For Vehicles with Engine Code(s) APB
1999 Audi A4 Quattro Wagon 2.8L V6 For Vehicles Where Last 6 Digits of VIN Number are Greater Than 260001; For Vehicles with Engine Code(s) AHA, ATQ
2004 Volkswagen Passat Wagon 2.8L V6
2003 Audi A6 Quattro Sedan 2.7L V6 Turbo For Vehicles with Engine Code(s) APB
2001 Volkswagen Passat Sedan 2.8L V6
2003 Volkswagen Passat Sedan 2.8L V6
2001 Audi Allroad Quattro Wagon 2.7L V6 Turbo For Vehicles with Engine Code(s) APB
2001 Audi S4 Wagon 2.7L V6 Turbo For Vehicles with Engine Code(s) APB
2000 Audi A6 Sedan 2.8L V6
2001 Volkswagen Passat 4 Sedan 2.8L V6
2000 Audi S4 Sedan 2.7L V6 Turbo For Vehicles with Engine Code(s) APB
1999 Audi A4 Sedan 2.8L V6 For Vehicles Where Last 6 Digits of VIN Number are Greater Than 260001
2002 Audi Allroad Quattro Wagon 2.7L V6 Turbo For Vehicles with Engine Code(s) APB
2005 Volkswagen Passat 4 Sedan 2.8L V6
1999 Audi A4 Quattro Sedan 2.8L V6 For Vehicles Where Last 6 Digits of VIN Number are Greater Than 260001; For Vehicles with Engine Code(s) AHA, ATQ
2005 Volkswagen Passat Wagon 2.8L V6
2003 Volkswagen Passat 4 Sedan 2.8L V6
2002 Volkswagen Passat 4 Wagon 2.8L V6
2001 Audi S4 Sedan 2.7L V6 Turbo For Vehicles with Engine Code(s) APB
2001 Volkswagen Passat Wagon 2.8L V6
2000 Audi A6 Quattro Wagon 2.8L V6
2004 Audi Allroad Quattro 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
2002 Audi S4 Wagon 2.7L V6 Turbo For Vehicles with Engine Code(s) APB

Ask a parts specialist

Asking about: Engine Knock Sensor - Brown 078905377 · OEM #078905377