2014-2016 Audi A6/A7 Coolant Reservoir Hose / Line 4G0122109A

OEM Part #: 4G0-122-109-A (4G0122109A)

$21.49
Used
Donor2015 Audi A6 · 3.0L
SKU: 599852 · 30-Day Returns
✓ Free Same Day Shipping on orders by noon CT
Only 2 in stock — no guaranteed restock
Coolant Reservoir Hose / Line 4G0122109A — Used (SKU 599852)
Genuine OEM Used SKU: 599852 Donor Vehicle: 2015 Audi A6 · 3.0L 2 photos
$21.49
30-Day Returns
Coolant Reservoir Hose / Line 4G0122109A — Used (SKU 599833)
Genuine OEM Used SKU: 599833 Donor Vehicle: 2015 Audi A6 · 3.0L 2 photos
$21.49
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 genuine Audi coolant reservoir hose, OEM part number 4G0122109A, is a used factory line removed from a donor vehicle. Also known as a coolant reservoir line, it carries coolant between the expansion tank and engine, commonly on Audi A6, A6 Quattro, and A7 Quattro models with the 2.8L V6 gas or 3.0L V6 diesel engine. When failing, symptoms include coolant leaks, low coolant warnings, or engine overheating due to loss of pressure. Verify fitment with your specific engine before purchase.

Specifications

Specifications for Coolant Reservoir Hose / Line 4G0122109A
Fits Vehicle ModelA6, A7
Fits Vehicle MakeAudi
OEM Part No4G0-122-109-A (4G0122109A)
CategoryRadiator / Coolant

Compatible Vehicles

Fits 5 vehicle configurations across 1 make, 2014-2016.

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.

Audi

  • A6 2014-2016 · 3 variants 2 with notes
  • A7 2014-2016 · 2 variants
View all 5 vehicle configurations — 2 with fitment notes
Full vehicle fitment list for Coolant Reservoir Hose / Line 4G0122109A
Year Make Model Trim Engine Note
2016 Audi A7 Quattro Hatchback 3.0L V6 Diesel Turbo
2016 Audi A6 Quattro Sedan 3.0L V6 Diesel Turbo
2015 Audi A6 Quattro Sedan 3.0L V6 Diesel Turbo For Vehicles with Engine Code(s) CDUC, CDUD, CKVB, CKVC, CLAA, CLAB, CPNB
2014 Audi A7 Quattro Hatchback 3.0L V6 Diesel Turbo
2014 Audi A6 Quattro Sedan 3.0L V6 Diesel Turbo For Vehicles with Engine Code(s) CDUC, CDUD, CKVB, CKVC, CLAA, CLAB, CPNB

Ask a parts specialist

Asking about: Coolant Reservoir Hose / Line 4G0122109A · OEM #4G0122109A