2011-2024 Audi / Porsche Heater Control Valve 4H0121670
OEM Part #: 4H0-121-670 (4H0121670)
Actual photo
The exact part you’ll receive — not a stock photo.
$18.49
Used
Donor2013 Audi A8 · 4.0L
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Genuine OEM Used
SKU: 566573
Donor Vehicle: 2013 Audi A8 · 4.0L
3 photos
$18.49
30-Day Returns
Genuine OEM Used
SKU: 609299
Donor Vehicle: 2013 Audi A8 · 4.0L
3 photos
$18.49
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
A used genuine OEM Audi Heater Control Valve (4H0121670) is ready for installation. This part also replaces 4H0121671 and 4H0121670A. The valve regulates coolant flow to the cabin heater core, controlling interior temperature. When it fails, common symptoms include inconsistent heat output or no heat at all, and sometimes a stuck-open valve causes the engine to warm up slowly. This valve fits a range of turbocharged EA839 2.9L and 3.0L V6, EA825 4.0L V8, and 2.0L/2.5L four- and five-cylinder applications from Audi and Porsche.
Specifications
| Fits Vehicle Model | A8, Cayenne, Q7, RS Q8, RS3, S8, TT RS |
| Fits Vehicle Make | Audi, Porsche |
| OEM Part No | 4H0-121-670 (4H0121670) |
| Compatible OEM Part No | 4H0-121-671, 4H0-121-670-A |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 92 vehicle configurations across 2 makes, 2011-2024.
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 92 vehicle configurations — 31 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2023 | Porsche | Cayenne | S Coupe SUV | 2.9L V6 Turbo | |
| 2022 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Turbo GT Coupe SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2023 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2023 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | GTS SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | Turbo GT Coupe SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | GTS Coupe SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | GTS Coupe SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | S Coupe SUV | 3.0L V6 Turbo | |
| 2024 | Porsche | Cayenne | S Coupe SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | Coupe SUV | 3.0L V6 Turbo | |
| 2024 | Porsche | Cayenne | SUV | 3.0L V6 Turbo | |
| 2020 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2020 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2020 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2020 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2019 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | Turbo GT Coupe SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | S SUV | 2.9L V6 Turbo | |
| 2023 | Porsche | Cayenne | GTS SUV | 4.0L V8 Turbo | |
| 2021 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Turbo S Coupe SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | Turbo Coupe SUV | 4.0L V8 Turbo | |
| 2023 | Porsche | Cayenne | Turbo SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | GTS Coupe SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | GTS SUV | 4.0L V8 Turbo | |
| 2024 | Porsche | Cayenne | S SUV | 3.0L V6 Turbo | |
| 2024 | Porsche | Cayenne | S SUV | 4.0L V8 Turbo | |
| 2022 | Porsche | Cayenne | Turbo S SUV | 4.0L V8 Turbo | |
| 2024 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 11/21/16 |
| 2024 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 08/05/24 |
| 2024 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2022 | Audi | TT RS | Quattro Coupe | 2.5L l5 Turbo | |
| 2024 | Audi | RS3 | Sedan | 2.5L l5 Turbo | |
| 2023 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 08/05/24 |
| 2022 | Audi | RS3 | Sedan | 2.5L l5 Turbo | |
| 2020 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2023 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 11/21/16 |
| 2021 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2019 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 11/21/16 |
| 2022 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 11/21/16 |
| 2021 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 11/21/16 |
| 2019 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2020 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 11/21/16 |
| 2021 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 08/05/24 |
| 2023 | Audi | RS3 | Sedan | 2.5L l5 Turbo | |
| 2021 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2020 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2021 | Audi | TT RS | Quattro Coupe | 2.5L l5 Turbo | |
| 2020 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 08/05/24 |
| 2020 | Audi | RS3 | Sedan | 2.5L l5 Turbo | |
| 2020 | Audi | TT RS | Quattro Coupe | 2.5L l5 Turbo | |
| 2023 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2022 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2017 | Audi | A8 | Quattro L 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 |
| 2016 | 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 |
| 2017 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2014 | Audi | A8 | Quattro 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 | TT RS | Quattro Coupe | 2.5L l5 Turbo | |
| 2013 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CEUA |
| 2012 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles with Engine Code(s) CDRA |
| 2012 | Audi | A8 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) CDRA |
| 2012 | Audi | TT RS | Quattro Coupe | 2.5L l5 Turbo | |
| 2011 | Audi | A8 | Quattro L Sedan | 4.2L V8 | For Vehicles with Engine Code(s) CDRA |
| 2011 | Audi | A8 | Quattro Sedan | 4.2L V8 | For Vehicles with Engine Code(s) CDRA |
| 2013 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CEUA |
| 2022 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | For Vehicles With Production date Up To 08/05/24 |
| 2019 | Audi | RS3 | Sedan | 2.5L l5 Turbo | |
| 2019 | Audi | TT RS | Quattro Coupe | 2.5L l5 Turbo | |
| 2018 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CTGA, CTGF |
| 2017 | Audi | RS3 | Sedan | 2.5L l5 Turbo | |
| 2018 | Audi | S8 | Sedan | 4.0L V8 Turbo | For Vehicles with Engine Code(s) CTGA, CTGF |
| 2018 | Audi | RS3 | Sedan | 2.5L l5 Turbo | |
| 2018 | Audi | TT RS | Quattro Coupe | 2.5L l5 Turbo | |
| 2018 | Audi | Q7 | SUV | 2.0L l4 Turbo | For Vehicles with Production Date After 11/21/16 |