Audi Coolant Hose / Line 4H0121081AA OEM Part #: 4H0-121-081-AA This item ships free!
The OEM coolant hose, part number 4H0121081AA, serves a critical role in the engine cooling system of various Audi models, specifically designed for the upper section. This connector tube is integral to routing coolant between the reservoir and the engine, ensuring optimal temperature regulation. It is compatible with 2011-2018 Audi A8 Quattro and S8 models featuring the 4.0L V8 and 6.3L W12 engine options. Common failure signs include leaks, cracks, or expansion due to age and heat exposure. Replacing a worn hose helps prevent overheating and coolant loss, preserving engine longevity. This part is also referred to as an overflow hose or reservoir hose, and can interchange with several alternative part numbers.
More Information about Coolant Hose / Line 4H0121081AA
Fits Vehicle Model:
A8 Quattro, S8
Fits Vehicle Make:
Audi
OEM Part No:
4H0121081AA (4H0-121-081-AA)
Compatible Vehicles for Coolant Hose / Line 4H0121081AA
Year:
2018
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
4.0L V8 Turbo
Restrictions:
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
Year:
2012
Make:
Audi
Model:
A8
Trim:
Quattro Sedan
Engine:
4.2L V8
Restrictions:
For Vehicles with Engine Code(s) CDRA
Year:
2012
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
4.2L V8
Restrictions:
For Vehicles with Engine Code(s) CDRA
Year:
2012
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
6.3L W12
Restrictions:
Year:
2013
Make:
Audi
Model:
S8
Trim:
Sedan
Engine:
4.0L V8 Turbo
Restrictions:
Year:
2013
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
6.3L W12
Restrictions:
Year:
2014
Make:
Audi
Model:
S8
Trim:
Sedan
Engine:
4.0L V8 Turbo
Restrictions:
Year:
2014
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
6.3L W12
Restrictions:
Year:
2014
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
4.0L V8 Turbo
Restrictions:
Year:
2013
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
4.0L V8 Turbo
Restrictions:
Year:
2014
Make:
Audi
Model:
A8
Trim:
Quattro Sedan
Engine:
4.0L V8 Turbo
Restrictions:
Year:
2013
Make:
Audi
Model:
A8
Trim:
Quattro Sedan
Engine:
4.0L V8 Turbo
Restrictions:
Year:
2015
Make:
Audi
Model:
A8
Trim:
Quattro Sedan
Engine:
4.0L V8 Turbo
Restrictions:
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
Year:
2015
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
4.0L V8 Turbo
Restrictions:
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
Year:
2015
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
6.3L W12
Restrictions:
Year:
2016
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
4.0L V8 Turbo
Restrictions:
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
Year:
2015
Make:
Audi
Model:
S8
Trim:
Sedan
Engine:
4.0L V8 Turbo
Restrictions:
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
Year:
2016
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
6.3L W12
Restrictions:
Year:
2016
Make:
Audi
Model:
S8
Trim:
Sedan
Engine:
4.0L V8 Turbo
Restrictions:
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
Year:
2017
Make:
Audi
Model:
S8
Trim:
Sedan
Engine:
4.0L V8 Turbo
Restrictions:
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
Year:
2017
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
4.0L V8 Turbo
Restrictions:
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
Year:
2018
Make:
Audi
Model:
S8
Trim:
Sedan
Engine:
4.0L V8 Turbo
Restrictions:
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
Year:
2011
Make:
Audi
Model:
A8
Trim:
Quattro L Sedan
Engine:
4.2L V8
Restrictions:
For Vehicles with Engine Code(s) CDRA
Year:
2011
Make:
Audi
Model:
A8
Trim:
Quattro Sedan
Engine:
4.2L V8
Restrictions:
For Vehicles with Engine Code(s) CDRA
Year
Make
Model
Trim
Engine
Restrictions
2018
Audi
A8
Quattro L Sedan
4.0L V8 Turbo
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
2012
Audi
A8
Quattro Sedan
4.2L V8
For Vehicles with Engine Code(s) CDRA
2012
Audi
A8
Quattro L Sedan
4.2L V8
For Vehicles with Engine Code(s) CDRA
2012
Audi
A8
Quattro L Sedan
6.3L W12
2013
Audi
S8
Sedan
4.0L V8 Turbo
2013
Audi
A8
Quattro L Sedan
6.3L W12
2014
Audi
S8
Sedan
4.0L V8 Turbo
2014
Audi
A8
Quattro L Sedan
6.3L W12
2014
Audi
A8
Quattro L Sedan
4.0L V8 Turbo
2013
Audi
A8
Quattro L Sedan
4.0L V8 Turbo
2014
Audi
A8
Quattro Sedan
4.0L V8 Turbo
2013
Audi
A8
Quattro Sedan
4.0L V8 Turbo
2015
Audi
A8
Quattro Sedan
4.0L V8 Turbo
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
2015
Audi
A8
Quattro L Sedan
4.0L V8 Turbo
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
2015
Audi
A8
Quattro L Sedan
6.3L W12
2016
Audi
A8
Quattro L Sedan
4.0L V8 Turbo
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
2015
Audi
S8
Sedan
4.0L V8 Turbo
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
2016
Audi
A8
Quattro L Sedan
6.3L W12
2016
Audi
S8
Sedan
4.0L V8 Turbo
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
2017
Audi
S8
Sedan
4.0L V8 Turbo
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
2017
Audi
A8
Quattro L Sedan
4.0L V8 Turbo
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
2018
Audi
S8
Sedan
4.0L V8 Turbo
For Vehicles with Engine Code(s) CTFA, CTGA, CTGF
2011
Audi
A8
Quattro L Sedan
4.2L V8
For Vehicles with Engine Code(s) CDRA
2011
Audi
A8
Quattro Sedan
4.2L V8
For Vehicles with Engine Code(s) CDRA
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