2009-2016 Audi Radiator / Coolant Reservoir Hose / Line 8K0121081AB
OEM Part #: 8K0-121-081-AB (8K0121081AB)
Actual photo
The exact part you’ll receive — not a stock photo.
$68.49
Used
Donor2012 Audi A5 QUATTRO · 2.0L
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Genuine OEM Used
SKU: 689517
Donor Vehicle: 2012 Audi A5 QUATTRO · 2.0L
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$68.49
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A used genuine OEM Audi coolant reservoir hose, part number 8K0121081AB, also replaces 8K0121081S. This line connects the expansion tank to the engine cooling system on 1.8L and 2.0L turbocharged four-cylinder models. A cracked or leaking hose can cause coolant loss, leading to overheating and low-coolant warnings.
Specifications
| Fits Vehicle Model | A4, A5, allroad |
| Fits Vehicle Make | Audi |
| OEM Part No | 8K0-121-081-AB (8K0121081AB) |
| Compatible OEM Part No | 8K0-121-081-S |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 25 vehicle configurations across 1 make, 2009-2016.
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 25 vehicle configurations — 6 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2016 | Audi | allroad | Wagon | 2.0L l4 Turbo | |
| 2015 | Audi | allroad | Wagon | 2.0L l4 Turbo | |
| 2014 | Audi | allroad | Wagon | 2.0L l4 Turbo | |
| 2013 | Audi | allroad | Wagon | 2.0L l4 Turbo | |
| 2009 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2011 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2010 | Audi | A5 | Convertible | 2.0L l4 Turbo | For Vehicles with Engine Code(s) CAEA, CAEB, CDNB, CDNC |
| 2009 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2012 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2011 | Audi | A5 | Convertible | 2.0L l4 Turbo | For Vehicles with Engine Code(s) CAEA, CAEB, CDNB, CDNC |
| 2010 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Vehicles with Engine Code(s) CAEA, CAEB, CDNB, CDNC |
| 2012 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | |
| 2011 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | |
| 2012 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2010 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | |
| 2011 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2009 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | |
| 2010 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | |
| 2011 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | |
| 2010 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2010 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2012 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | |
| 2012 | Audi | A5 | Convertible | 2.0L l4 Turbo | For Vehicles with Engine Code(s) CAEA, CAEB, CDNB, CDNC |
| 2012 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Vehicles with Engine Code(s) CAEA, CAEB, CDNB, CDNC |
| 2011 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Vehicles with Engine Code(s) CAEA, CAEB, CDNB, CDNC |