Audi A6/A7/RS7/S6/S7 Coolant Reservoir / Tank / Bottle 4G0121403R
OEM Part #: 4G0-121-403-R (4G0121403R)
This page covers one exact OEM part number. Every unit we stocked has sold.
We may be able to get another
Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:
Other Coolant Reservoir / Tank that may fit your vehicle
Coolant Reservoir / Tank / Bottle
$27.99
Fits 2012–2018 Audi
OEM: 4G0121403G
Coolant Reservoir / Tank / Bottle Cap
$7.99
Fits 1998–2024 Audi, Porsche + more
OEM: 3B0121321
Coolant Reservoir Mount / Bracket
$8.99
Fits 2016–2018 Audi
OEM: 4G0121214AF
Coolant Reservoir Mount / Bracket
$10.99
Fits 2016–2018 Audi
OEM: 4G0121214AE
- Genuine OEM — real photos
- 30-day returns on eligible parts
- eBay Top Rated · 100,000+ positive ratings
- Ships from our own indoor warehouse
Replace your aging coolant reservoir with this authentic OEM coolant tank, part number 4G0121403D, sourced from a salvage Audi vehicle. Designed for seamless integration, this part fits the following models: Audi A7 Quattro (2012-2018), A6 and A6 Quattro (2012-2018), S6 (2013-2018), S7 (2013-2018), and RS7 (2014-2018). A worn-out or damaged coolant reservoir can lead to overheating and coolant leaks—restoring your vehicle's cooling system integrity is essential. This factory-original piece ensures optimal performance, effectively managing coolant levels to maintain engine temperature. Replace with confidence and experience reliable functionality without compromise. Alternative part numbers include 4G0121403G and 4G0121403R.
Specifications
| Fits Vehicle Model | A6, A7, RS7, S6, S7 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4G0-121-403-R (4G0121403R) |
| Compatible OEM Part No | 4G0-121-403-D, 4G0-121-403-G |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 47 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 47 vehicle configurations — 40 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2012 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 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 | A6 | Sedan | 2.0L l4 Turbo | |
| 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 | A7 | Quattro Hatchback | 3.0L V6 Supercharged | For Vehicles with Production Date After 10/17/11 |
| 2013 | Audi | S6 | Sedan | 4.0L V8 Turbo | 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 |
| 2014 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2014 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2014 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Vehicles with Production Date After 10/17/11 |
| 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 Supercharged | 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 | RS7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 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 |
| 2015 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2015 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2015 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Vehicles with Production Date After 10/17/11 |
| 2015 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | For Vehicles with Production Date After 10/17/11 |
| 2015 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2015 | Audi | S6 | Sedan | 4.0L V8 Turbo | For Vehicles with Production Date After 10/17/11 |
| 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 Supercharged | 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 |
| 2016 | Audi | A7 | Quattro Hatchback | 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 |
| 2016 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2016 | 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 |
| 2017 | Audi | A6 | 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 | A6 | Quattro Sedan | 2.0L l4 Turbo | 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 |
| 2017 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | For Vehicles With Production date Up To 11/27/17 |
| 2017 | Audi | S6 | Sedan | 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 |
| 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 | A6 | Quattro Sedan | 3.0L V6 Supercharged | For Vehicles With Production date Up To 11/27/17 |
| 2018 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | 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 |
| 2018 | Audi | S6 | Sedan | 4.0L V8 Turbo | 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 |