2005-2009 Audi S4 Alternator Coolant Hose / Line 079121131BB
OEM Part #: 079-121-131-BB (079121131BB)
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:
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This OEM Alternator Coolant Hose (Part Number 079903021BX, 079121131N) is an essential component of the cooling system in your Audi S4 (2005, 2007-2009). Located between the alternator and the engine cooling circuit, it facilitates efficient coolant circulation, preventing overheating and maintaining optimal engine performance. Common issues such as cracks, kinks, or leaks can lead to poor engine function and overheating, making replacement necessary. This coolant hose is also referred to as an alternator adapter line and is compatible with 4.2L V8 engines. Trust this factory-original part from donor vehicles to ensure reliability and proper fitment within your vehicle's cooling system.
Specifications
| Fits Vehicle Model | S4 |
| Fits Vehicle Make | Audi |
| OEM Part No | 079-121-131-BB (079121131BB) |
| Compatible OEM Part No | 079-903-021-BX, 079-121-131-N |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 9 vehicle configurations across 1 make, 2005-2009.
View all 9 vehicle configurations — 2 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2005 | Audi | S4 | Wagon | 4.2L V8 | |
| 2005 | Audi | S4 | Sedan | 4.2L V8 | |
| 2007 | Audi | S4 | Wagon | 4.2L V8 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 085001 |
| 2007 | Audi | S4 | Sedan | 4.2L V8 | For Vehicles Where Last 6 Digits of VIN Number are Greater Than 085001 |
| 2007 | Audi | S4 | Convertible | 4.2L V8 | |
| 2008 | Audi | S4 | Wagon | 4.2L V8 | |
| 2008 | Audi | S4 | Sedan | 4.2L V8 | |
| 2008 | Audi | S4 | Convertible | 4.2L V8 | |
| 2009 | Audi | S4 | Convertible | 4.2L V8 |