2013-2018 Audi A8/S8 Lower Radiator Coolant Hose / Line 4H0121056L

OEM Part #: 4H0-121-056-L (4H0121056L)

$19.49
Used
Donor2015 Audi A8 · 4.0L
SKU: 665363 · 30-Day Returns
✓ Free Same Day Shipping on orders by noon CT
Only 2 in stock — no guaranteed restock
Lower Radiator Coolant Hose / Line 4H0121056L — Used (SKU 665363)
Genuine OEM Used SKU: 665363 Donor Vehicle: 2015 Audi A8 · 4.0L 2 photos
$19.49
30-Day Returns
Lower Radiator Coolant Hose / Line 4H0121056L — Used (SKU 674748)
Genuine OEM Used SKU: 674748 Donor Vehicle: 2015 Audi A8 · 4.0L 2 photos
$19.49
30-Day Returns
  • Genuine OEM — real photos
  • 30-day returns on eligible parts
  • eBay Top Rated · 100,000+ positive ratings
  • Ships from our own indoor warehouse

This used OEM lower radiator coolant hose/line carries part number 4H0121056L and came from a donor Audi. Designed for the 4.0L turbocharged V8 in the A8 and S8, this genuine Audi coolant hose routes coolant from the radiator to the engine. When the rubber cracks or the connection weakens, it can cause coolant leaks and potential overheating. Also known simply as a coolant line, this is a direct-fit replacement for the factory hose.

Specifications

Specifications for Lower Radiator Coolant Hose / Line 4H0121056L
Fits Vehicle ModelA8, S8
Fits Vehicle MakeAudi
OEM Part No4H0-121-056-L (4H0121056L)
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 Lower Radiator Coolant Hose / Line 4H0121056L
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

Ask a parts specialist

Asking about: Lower Radiator Coolant Hose / Line 4H0121056L · OEM #4H0121056L