2013-2017 Audi S4/S5 Coolant Reservoir Hose / Line 8K0121081BK
OEM Part #: 8K0-121-081-BK (8K0121081BK)
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The exact part you’ll receive — not a stock photo.
$59.99
Used
Donor2013 Audi S5 · 3.0L
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Genuine OEM Used
SKU: 710204
Donor Vehicle: 2013 Audi S5 · 3.0L
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$59.99
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This genuine OEM Audi coolant reservoir hose (part 8K0121081BK) is a used replacement for the factory line that connects the expansion tank to the cooling system. On the supercharged 3.0L V6 found in the A4 Quattro, A5, and S models, this hose circulates coolant under pressure; a cracked or leaking line can cause low coolant levels and overheating.
Specifications
| Fits Vehicle Model | S4, S5 |
| Fits Vehicle Make | Audi |
| OEM Part No | 8K0-121-081-BK (8K0121081BK) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 13 vehicle configurations across 1 make, 2013-2017.
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 13 vehicle configurations — 13 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2016 | Audi | S4 | Sedan | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2016 | Audi | S5 | Coupe | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2017 | Audi | S5 | Convertible | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2016 | Audi | S5 | Convertible | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2014 | Audi | S5 | Convertible | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2014 | Audi | S5 | Coupe | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2014 | Audi | S4 | Sedan | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2013 | Audi | S5 | Coupe | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2013 | Audi | S5 | Convertible | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2013 | Audi | S4 | Sedan | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2015 | Audi | S5 | Convertible | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2015 | Audi | S4 | Sedan | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |
| 2015 | Audi | S5 | Coupe | 3.0L V6 Supercharged | For Vehicles with Production Date After 04/09/12 |