2017-2025 Audi Q7/Q8/SQ7/SQ8 Brake Master Cylinder 4M0611021G
OEM Part #: 4M0-611-021-G (4M0611021G)
Actual photo
The exact part you’ll receive — not a stock photo.
$59.99
Used
Donor2021 Audi SQ8 · 4.0L · 47k miles
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Genuine OEM Used
SKU: 701249
Donor Vehicle: 2021 Audi SQ8 · 4.0L · 47k miles
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$59.99
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This used OEM Audi brake master cylinder (OEM 4M0611021G, also replaces 4M0611021A) generates hydraulic pressure when the brake pedal is pressed, sending fluid to the calipers. A failing unit often causes a spongy pedal or visible fluid leakage near the firewall. It's compatible with several Audi models—including Q7, Q8, SQ7, and SQ8—and with engine options ranging from 2.0L turbocharged four-cylinders up to 4.0L MHEV V8s.
Specifications
| Fits Vehicle Model | Q7, Q8, SQ7, SQ8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4M0-611-021-G (4M0611021G) |
| Compatible OEM Part No | 4M0-611-021-A |
| Category | Master Cylinder |
Compatible Vehicles
Fits 37 vehicle configurations across 1 make, 2017-2025.
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 37 vehicle configurations — 1 with fitment note
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2020 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2022 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2024 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2022 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2022 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2021 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2021 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2021 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2021 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2017 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2017 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2025 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2023 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2025 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2025 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2025 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2025 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2020 | Audi | SQ7 | SUV | 4.0L V8 Turbo | to 06/17/2019 |
| 2024 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2022 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2024 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2024 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2020 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2024 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2019 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2023 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2019 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2018 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2018 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2019 | Audi | Q7 | SUV | 3.0L V6 Supercharged | |
| 2020 | Audi | Q7 | SUV | 3.0L V6 Turbo | |
| 2022 | Audi | Q8 | SUV | 3.0L V6 Turbo | |
| 2020 | Audi | Q7 | SUV | 2.0L l4 Turbo | |
| 2021 | Audi | Q8 | SUV | 3.0L V6 Turbo |