2013-2018 Audi A8/S8 Coolant Pipe / Tube / Line 4H0121399H

OEM Part #: 4H0-121-399-H (4H0121399H)

$14.99
Used
Donor2014 Audi A8 · 4.0L
SKU: 544556 · 30-Day Returns
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Coolant Pipe / Tube / Line 4H0121399H — Used (SKU 544556)
Genuine OEM Used SKU: 544556 Donor Vehicle: 2014 Audi A8 · 4.0L 2 photos
$14.99
30-Day Returns
Coolant Pipe / Tube / Line 4H0121399H — Used (SKU 566699)
Genuine OEM Used SKU: 566699 Donor Vehicle: 2013 Audi A8 · 4.0L 2 photos
$14.99
30-Day Returns
  • Genuine OEM — real photos
  • 30-day returns on eligible parts
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A used genuine OEM coolant pipe / tube / line, part number 4H0121399H, from an Audi A8 Quattro or S8 donor. This pipe is specific to the 4.0L twin-turbo V8 engine and carries coolant between critical engine components. Over time, the plastic ends can become brittle and crack, leading to coolant leaks and potential overheating. Ensure a proper seal on installation to avoid failure.

Specifications

Specifications for Coolant Pipe / Tube / Line 4H0121399H
Fits Vehicle ModelA8, S8
Fits Vehicle MakeAudi
OEM Part No4H0-121-399-H (4H0121399H)
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 Pipe / Tube / Line 4H0121399H
Year Make Model Trim Engine Note
2017 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTFA, CTGA, CTGF, DDTA
2016 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTFA, CTGA, CTGF, DDTA
2018 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTFA, CTGA, CTGF, DDTA
2018 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTFA, CTGA, CTGF, DDTA
2017 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTFA, CTGA, CTGF, DDTA
2015 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTFA, CTGA, CTGF, DDTA
2016 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTFA, CTGA, CTGF, DDTA
2015 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTFA, CTGA, CTGF, DDTA
2015 Audi A8 Quattro Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CTFA, CTGA, CTGF, DDTA
2013 Audi A8 Quattro Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA, CGTA
2014 Audi A8 Quattro Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA, CGTA
2013 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA, CGTA
2014 Audi A8 Quattro L Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA, CGTA
2014 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA, CGTA
2013 Audi S8 Sedan 4.0L V8 Turbo For Vehicles with Engine Code(s) CEUA, CGTA

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