Audi Transmission Module Wiring Harness / Pigtail 4L0971921
OEM Part #: 4L0-971-921 (4L0971921)
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 Transmission Wire / Wiring Harness that may fit your vehicle
14-PIN Transmission Wiring Harness
$13.99
Fits 2010–2018 Audi, Porsche + more
OEM: 0C8927363
Porsche: 95861236300
8-PIN Transmission Wiring Harness
$13.99
Fits 2010–2018 Audi, Porsche + more
OEM: 0C8927363A
Porsche: 95861236310
Differential Wiring Harness
$69.99
Fits 2012–2018 Audi
Engine / Transmission Wiring Harness
$79.99
Fits 2014–2015 Audi Q5
Tcu / Transmission Module Wiring Connector / Pigtail
Starting at $7.21
Fits 1996–2019 Audi, Porsche + more
OEM: 1J0906380B
Transmission Gear Position Switch Wiring Harness / Connector
$49.99
Fits 2011–2015 Audi Q7
OEM: 4L0971771
- Genuine OEM — real photos
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The Transmission Module Wiring Harness, OEM part number 4L0971921, is a crucial component in various Audi models, ensuring seamless communication between the transmission control module and the vehicle’s electrical system. Located within the engine bay, this wiring harness connects directly to the transmission unit, playing a pivotal role in relaying information necessary for optimal transmission performance. Common issues requiring replacement include damage from wear and tear or electrical failures, which can lead to erratic transmission behavior. Compatible with Audi A4 allroad (2013-2016), Q7 (2007-2015), A6 Quattro (2012-2018), and others, this genuine OEM part ensures factory-original reliability and functionality.
Specifications
| Fits Vehicle Model | A4, A5, A6, A7, A8, allroad, Q5, Q7, RS7, S6, S7, S8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4L0-971-921 (4L0971921) |
| Category | Wiring / Harness |
Compatible Vehicles
Fits 139 vehicle configurations across 1 make, 2007-2018.
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 139 vehicle configurations — 61 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2007 | Audi | Q7 | SUV | 3.6L V6 | |
| 2007 | Audi | Q7 | SUV | 4.2L V8 | |
| 2008 | Audi | Q7 | SUV | 3.6L V6 | |
| 2008 | Audi | Q7 | SUV | 4.2L V8 | |
| 2009 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | For Automatic Transmission |
| 2009 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2009 | Audi | Q5 | SUV | 3.2L V6 | For Automatic Transmission |
| 2009 | Audi | Q7 | SUV | 3.6L V6 | |
| 2009 | Audi | Q7 | SUV | 4.2L V8 | |
| 2009 | Audi | Q7 | SUV | 3.0L V6 Diesel Turbo | |
| 2010 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | For Automatic Transmission |
| 2010 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2010 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2010 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2010 | Audi | Q5 | SUV | 3.2L V6 | For Automatic Transmission |
| 2010 | Audi | Q7 | SUV | 3.6L V6 | |
| 2010 | Audi | Q7 | SUV | 4.2L V8 | |
| 2010 | Audi | Q7 | SUV | 3.0L V6 Diesel Turbo | |
| 2011 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | For Automatic Transmission |
| 2011 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2011 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2011 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2011 | Audi | A8 | Quattro Sedan | 4.2L V8 | |
| 2011 | Audi | A8 | Quattro L Sedan | 4.2L V8 | |
| 2011 | Audi | Q5 | SUV | 2.0L l4 Turbo | For Automatic Transmission |
| 2011 | Audi | Q5 | SUV | 3.2L V6 | For Automatic Transmission |
| 2011 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2011 | Audi | Q7 | SUV | 3.0L V6 Diesel Turbo | |
| 2012 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | For Automatic Transmission |
| 2012 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2012 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2012 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2012 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2012 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2012 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | |
| 2012 | Audi | A8 | Quattro Sedan | 4.2L V8 | |
| 2012 | Audi | A8 | Quattro L Sedan | 4.2L V8 | |
| 2012 | Audi | A8 | Quattro L Sedan | 6.3L W12 | For Automatic Transmission |
| 2012 | Audi | Q5 | SUV | 2.0L l4 Turbo | For Automatic Transmission |
| 2012 | Audi | Q5 | SUV | 3.2L V6 | For Automatic Transmission |
| 2012 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2012 | Audi | Q7 | SUV | 3.0L V6 Diesel Turbo | |
| 2013 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2013 | Audi | A5 | Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2013 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2013 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2013 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2013 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2013 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | |
| 2013 | Audi | A8 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2013 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | |
| 2013 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | |
| 2013 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2013 | Audi | A8 | Quattro L Sedan | 6.3L W12 | For Automatic Transmission |
| 2013 | Audi | allroad | Wagon | 2.0L l4 Turbo | For Automatic Transmission |
| 2013 | Audi | Q5 | SUV | 2.0L l4 Turbo | For Automatic Transmission |
| 2013 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2013 | Audi | Q7 | SUV | 3.0L V6 Diesel Turbo | |
| 2013 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2014 | Audi | A5 | Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2014 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2014 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2014 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2014 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2014 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | |
| 2014 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | |
| 2014 | Audi | A7 | Quattro Hatchback | 3.0L V6 Diesel Turbo | |
| 2014 | Audi | A8 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2014 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | |
| 2014 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | A8 | Quattro L Sedan | 3.0L V6 Diesel Turbo | |
| 2014 | Audi | A8 | Quattro L Sedan | 6.3L W12 | For Automatic Transmission |
| 2014 | Audi | allroad | Wagon | 2.0L l4 Turbo | For Automatic Transmission |
| 2014 | Audi | Q5 | SUV | 2.0L l4 Turbo | For Automatic Transmission |
| 2014 | Audi | Q5 | SUV | 3.0L V6 Diesel Turbo | |
| 2014 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2014 | Audi | Q7 | SUV | 3.0L V6 Diesel Turbo | |
| 2014 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2014 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2015 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2015 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2015 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2015 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2015 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2015 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | |
| 2015 | Audi | A8 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2015 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | |
| 2015 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | |
| 2015 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2015 | Audi | A8 | Quattro L Sedan | 3.0L V6 Diesel Turbo | |
| 2015 | Audi | A8 | Quattro L Sedan | 6.3L W12 | |
| 2015 | Audi | allroad | Wagon | 2.0L l4 Turbo | For Automatic Transmission |
| 2015 | Audi | Q5 | SUV | 2.0L l4 Turbo | For Automatic Transmission |
| 2015 | Audi | Q5 | SUV | 3.0L V6 Diesel Turbo | |
| 2015 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2015 | Audi | Q7 | SUV | 3.0L V6 Diesel Turbo | |
| 2015 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2015 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2016 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2016 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2016 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2016 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2016 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2016 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | |
| 2016 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | |
| 2016 | Audi | A7 | Quattro Hatchback | 3.0L V6 Diesel Turbo | |
| 2016 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | |
| 2016 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2016 | Audi | A8 | Quattro L Sedan | 3.0L V6 Diesel Turbo | |
| 2016 | Audi | A8 | Quattro L Sedan | 6.3L W12 | |
| 2016 | Audi | allroad | Wagon | 2.0L l4 Turbo | For Automatic Transmission |
| 2016 | Audi | Q5 | SUV | 2.0L l4 Turbo | For Automatic Transmission |
| 2016 | Audi | Q5 | SUV | 3.0L V6 Diesel Turbo | |
| 2016 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2016 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2016 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2016 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2017 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2017 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | |
| 2017 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | |
| 2017 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2017 | Audi | Q5 | SUV | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2017 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2017 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2017 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2018 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2018 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2018 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | |
| 2018 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | |
| 2018 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2018 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2018 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Automatic Transmission |
| 2018 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Automatic Transmission |
| 2018 | Audi | S8 | Sedan | 4.0L V8 Turbo |