2017-2026 Audi A4/A5/Q5/Q5 PHEV/Q7 Thermostat 1K0121113B
OEM Part #: 1K0-121-113-B (1K0121113B)
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The exact part you’ll receive — not a stock photo.
$24.49
Used
Donor2021 Audi Q5 · 2.0L
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Genuine OEM Used
SKU: 670741
Donor Vehicle: 2021 Audi Q5 · 2.0L
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$24.49
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Audi thermostat, OEM part number 1K0121113B, is a used genuine factory component that also replaces 80A122449BM. This thermostat regulates engine coolant temperature for the 2.0L turbocharged four-cylinder engines found in Audi A4, A5, Q5, and Q7 models. When a thermostat fails, it can cause the engine to run too hot or too cold, leading to poor fuel economy or a check-engine light.
Specifications
| Fits Vehicle Model | A4, A5, Q5, Q5 PHEV, Q7 |
| Fits Vehicle Make | Audi |
| OEM Part No | 1K0-121-113-B (1K0121113B) |
| Compatible OEM Part No | 80A-122-449-BM |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 54 vehicle configurations across 1 make, 2017-2026.
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 54 vehicle configurations — 36 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2020 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2025 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2021 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2024 | Audi | Q5 PHEV | SUV | 2.0L l4 Turbo | |
| 2022 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2022 | Audi | Q5 PHEV | SUV | 2.0L l4 Turbo | |
| 2020 | Audi | Q5 PHEV | SUV | 2.0L l4 Turbo | |
| 2024 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2018 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2021 | Audi | Q5 PHEV | SUV | 2.0L l4 Turbo | |
| 2019 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2023 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2023 | Audi | Q5 PHEV | SUV | 2.0L l4 Turbo | |
| 2025 | Audi | Q5 PHEV | SUV | 2.0L l4 Turbo | |
| 2019 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission |
| 2024 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2019 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2019 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2023 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2022 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2020 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2021 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2023 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2023 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2025 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2026 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2022 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2024 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission |
| 2021 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2024 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2021 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2024 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2021 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission |
| 2020 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | A4 | Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2018 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2018 | Audi | A4 | Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2017 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2019 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2019 | Audi | A4 | Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2018 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2018 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | For Automatic Transmission |
| 2018 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission |
| 2022 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission |
| 2020 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2020 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission |
| 2024 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2022 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | For Automatic Transmission |
| 2020 | Audi | A4 | Sedan | 2.0L l4 Turbo | For Automatic Transmission |
| 2023 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission |
| 2023 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2025 | Audi | A5 | Hatchback | 2.0L l4 Turbo | For Automatic Transmission |