Audi 4.2 Engine / Ignition Coil Wiring Harness / Conduit Left 4Z7971824B
OEM Part #: 4Z7-971-824-B (4Z7971824B)
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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:
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The 4.2 Engine Ignition Coil Wiring Harness with Conduit (OEM Part Number 4Z7971824B) is an essential component located on the left side of various Audi models, including the S4 (2004-2009), Allroad Quattro (2003-2005), and A6 Quattro (2005-2008). This wiring harness provides critical electrical connections for the ignition coils in cylinders 5 through 8, ensuring proper signal transmission and engine performance. Common issues prompting replacement include frayed wires, connector damage, or electrical failures resulting in misfires or rough idling. This factory-original part is a direct replacement designed for an exact fit and reliable operation, supporting overall engine functionality and performance.
CYLINDERS 5-8
Specifications
| Fits Vehicle Model | A6, Allroad, S4 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4Z7-971-824-B (4Z7971824B) |
| Side | Left |
| Category | Wiring / Harness |
Compatible Vehicles
Fits 22 vehicle configurations across 1 make, 2004-2009.
View all 22 vehicle configurations — 6 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2004 | Audi | Allroad | Quattro Wagon | 4.2L V8 | |
| 2004 | Audi | S4 | Wagon | 4.2L V8 | |
| 2004 | Audi | S4 | Sedan | 4.2L V8 | |
| 2004 | Audi | S4 | Convertible | 4.2L V8 | |
| 2005 | Audi | A6 | Quattro Sedan | 4.2L V8 | |
| 2005 | Audi | Allroad | Quattro Wagon | 4.2L V8 | |
| 2005 | Audi | S4 | Wagon | 4.2L V8 | |
| 2005 | Audi | S4 | Sedan | 4.2L V8 | |
| 2005 | Audi | S4 | Convertible | 4.2L V8 | |
| 2006 | Audi | A6 | Quattro Sedan | 4.2L V8 | |
| 2006 | Audi | S4 | Wagon | 4.2L V8 | For Vehicles with Production Date After 11/22/04 |
| 2006 | Audi | S4 | Sedan | 4.2L V8 | For Vehicles with Production Date After 11/22/04 |
| 2006 | Audi | S4 | Convertible | 4.2L V8 | |
| 2007 | Audi | A6 | Quattro Sedan | 4.2L V8 | |
| 2007 | Audi | S4 | Wagon | 4.2L V8 | For Vehicles with Production Date After 11/22/04 |
| 2007 | Audi | S4 | Sedan | 4.2L V8 | For Vehicles with Production Date After 11/22/04 |
| 2007 | Audi | S4 | Convertible | 4.2L V8 | |
| 2008 | Audi | A6 | Quattro Sedan | 4.2L V8 | |
| 2008 | Audi | S4 | Wagon | 4.2L V8 | For Vehicles with Production Date After 11/22/04 |
| 2008 | Audi | S4 | Sedan | 4.2L V8 | For Vehicles with Production Date After 11/22/04 |
| 2008 | Audi | S4 | Convertible | 4.2L V8 | |
| 2009 | Audi | S4 | Convertible | 4.2L V8 |