2013-2018 Audi A8/S8 Coolant Hose / Line Set 4H0121088AP

OEM Part #: 4H0-121-088-AP (4H0121088AP)

$46.99
Used
Donor2014 Audi A8 · 4.0L
SKU: 544581 · 30-Day Returns
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Coolant Hose / Line Set 4H0121088AP — Used (SKU 544581)
Genuine OEM Used SKU: 544581 Donor Vehicle: 2014 Audi A8 · 4.0L 2 photos
$46.99
30-Day Returns
Coolant Hose / Line Set 4H0121088AP — Used (SKU 566689)
Genuine OEM Used SKU: 566689 Donor Vehicle: 2013 Audi A8 · 4.0L 2 photos
$46.99
30-Day Returns
  • Genuine OEM — real photos
  • 30-day returns on eligible parts
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For your Audi A8 Quattro or S8, this used OEM Coolant Hose / Line Set (4H0121088AP) is a genuine replacement for the original coolant hose assembly. Also known as a coolant line or pipe set, it routes engine coolant through the 4.0L V8 turbocharged engine. When these hoses crack or develop leaks, you may notice coolant loss, steam under the hood, or engine overheating—common failure points on high-mileage turbo V8s. This direct-fit set restores proper coolant flow to manage the heat from forced induction.

Specifications

Specifications for Coolant Hose / Line Set 4H0121088AP
Fits Vehicle ModelA8, S8
Fits Vehicle MakeAudi
OEM Part No4H0-121-088-AP (4H0121088AP)
CategoryRadiator / Coolant

Compatible Vehicles

Fits 15 vehicle configurations across 1 make, 2013-2018.

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.

Audi

  • A8 2013-2018 · 9 variants 9 with notes
  • S8 2013-2018 · 6 variants 6 with notes
View all 15 vehicle configurations — 15 with fitment notes
Full vehicle fitment list for Coolant Hose / Line Set 4H0121088AP
Year Make Model Trim Engine Note
2017 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTGA, CTGF
2016 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTGA, CTGF
2018 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTGA, CTGF
2018 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTGA, CTGF
2017 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTGA, CTGF
2015 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTGA, CTGF
2016 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTGA, CTGF
2015 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTGA, CTGF
2015 Audi A8 Quattro Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTGA, CTGF
2013 Audi A8 Quattro Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA
2014 Audi A8 Quattro Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA
2013 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA
2014 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA
2014 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA
2013 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA

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