2012-2018 Audi A6/A7/RS7/S6/S7 Coolant Reservoir / Tank / Bottle 4G0121403G
OEM Part #: 4G0-121-403-G (4G0121403G)
Actual photo
The exact part you’ll receive — not a stock photo.
$27.99
Used
Donor2014 Audi S6 · 4.0L
✓ Free Same Day Shipping on orders by noon CT
Only 1 in stock — no guaranteed restock
Genuine OEM Used
SKU: 698617
Donor Vehicle: 2014 Audi S6 · 4.0L
3 photos
$27.99
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 is a used OEM Audi coolant reservoir, tank, or bottle with part number 4G0121403G. It also replaces numbers 4G0121403D and 4G0121403AC. This part holds and supplies engine coolant to prevent overheating, and a common failure is a cracked plastic tank or a leaking seal at the hose connection. It fits several Audi models with engines including the 1.8L turbo, 2.0L turbo, 2.8L V6, 3.0L diesel and supercharged V6, and 4.0L V8.
Specifications
| Fits Vehicle Model | A6, A7, RS7, S6, S7 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4G0-121-403-G (4G0121403G) |
| Compatible OEM Part No | 4G0-121-403-D, 4G0-121-403-AC |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 50 vehicle configurations across 1 make, 2012-2018.
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.
View all 50 vehicle configurations — 43 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2015 | Audi | A7 | Quattro Hatchback | 3.0L V6 Diesel Turbo | For Vehicles with Production Date After 10/17/11 |
| 2015 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Vehicles with Production Date After 10/17/11 |
| 2015 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Vehicles with Production Date After 10/17/11 |
| 2017 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2017 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2017 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Vehicles With Production date Up To 11/27/17 |
| 2017 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Vehicles With Production date Up To 11/27/17 |
| 2018 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2018 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2017 | Audi | A6 | Sedan | 2.0L l4 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2018 | Audi | A6 | Sedan | 2.0L l4 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2018 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2018 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2016 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2015 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2016 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2017 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2017 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2012 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2014 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Vehicles with Production Date After 10/17/11 |
| 2018 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Vehicles With Production date Up To 11/27/17 |
| 2016 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Vehicles With Production date Up To 11/27/17 |
| 2018 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Vehicles With Production date Up To 11/27/17 |
| 2016 | Audi | A7 | Quattro Hatchback | 3.0L V6 Diesel Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2014 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2014 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2014 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | For Vehicles with Production Date After 10/17/11 |
| 2014 | Audi | A7 | Quattro Hatchback | 3.0L V6 Diesel Turbo | For Vehicles with Production Date After 10/17/11 |
| 2014 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2014 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Vehicles with Production Date After 10/17/11 |
| 2012 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Vehicles with Production Date After 10/17/11 |
| 2012 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Vehicles with Production Date After 10/17/11 |
| 2013 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Vehicles with Production Date After 10/17/11 |
| 2013 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Vehicles with Production Date After 10/17/11 |
| 2013 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2013 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Vehicles with Production Date After 10/17/11 |
| 2013 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2013 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Vehicles with Production Date After 10/17/11 |
| 2014 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Vehicles with Production Date After 10/17/11 |
| 2014 | Audi | S7 | Hatchback | 4.0L V8 Turbo | For Vehicles with Production Date After 10/17/11 |
| 2016 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2016 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Vehicles With Production date Up To 11/27/17 |
| 2016 | Audi | A6 | Sedan | 2.0L l4 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2016 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2016 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2015 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2015 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | For Vehicles with Production Date After 10/17/11 |
| 2015 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Vehicles with Production Date After 10/17/11 |
| 2015 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2015 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Vehicles with Production Date After 10/17/11 |