Audi A4/A4 allroad/A5/RS5/S4/S5 Brake Master Cylinder 8W0611021

OEM Part #: 8W0-611-021 (8W0611021)

$59.95
Used
Donor Vehicle2024 Audi S5 · 3.0L · 11k miles
SKU: 739700 · 30-Day Returns
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Brake Master Cylinder 8W0611021 — Used (SKU 739700)
Genuine OEM Used SKU: 739700 Donor Vehicle: 2024 Audi S5 · 3.0L · 11k miles 3 photos
$59.95
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A used OEM Audi Brake Master Cylinder, part number 8W0611021 (also supersedes 8W0611021C), is sourced from a donor vehicle. This component converts the force from your brake pedal into hydraulic pressure to activate the braking system. A common failure symptom includes a soft or spongy pedal that sinks to the floor, indicating internal leakage. It serves the B9-generation Audi A4, A5, S4, S5, and RS5 models, paired with engines like the 2.0L turbocharged four-cylinder or the 2.9L and 3.0L V6 units.

Specifications

Specifications for Brake Master Cylinder 8W0611021
Fits Vehicle ModelA4, A4 allroad, A5, RS5, S4, S5
Fits Vehicle MakeAudi
OEM Part No8W0-611-021 (8W0611021)
Compatible OEM Part No 8W0-611-021-C
CategoryMaster Cylinder

Compatible Vehicles

Fits 90 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.

Audi

  • A4 2017-2025 · 13 variants
  • A4 allroad 2017-2025 · 9 variants
  • A5 2017-2025 · 24 variants
  • RS5 2018-2025 · 12 variants
  • S4 2018-2025 · 8 variants
  • S5 2017-2025 · 24 variants
View all 90 vehicle configurations
Full vehicle fitment list for Brake Master Cylinder 8W0611021
Year Make Model Trim Engine Note
2025 Audi A5 Hatchback 2.0L l4 Turbo
2019 Audi A4 allroad Wagon 2.0L l4 Turbo
2022 Audi A4 allroad Wagon 2.0L l4 Turbo
2021 Audi A4 allroad Wagon 2.0L l4 Turbo
2020 Audi A4 allroad Wagon 2.0L l4 Turbo
2025 Audi S5 Hatchback 3.0L V6 Turbo
2018 Audi A4 allroad Wagon 2.0L l4 Turbo
2017 Audi A4 allroad Wagon 2.0L l4 Turbo
2025 Audi RS5 Hatchback 2.9L V6 Turbo
2023 Audi A4 allroad Wagon 2.0L l4 Turbo
2025 Audi S4 Sedan 3.0L V6 Turbo
2025 Audi A4 Quattro Sedan 2.0L l4 Turbo
2025 Audi A4 allroad Wagon 2.0L l4 Turbo
2024 Audi A4 allroad Wagon 2.0L l4 Turbo
2022 Audi S4 Sedan 3.0L V6 Turbo
2024 Audi S4 Sedan 3.0L V6 Turbo
2023 Audi S4 Sedan 3.0L V6 Turbo
2021 Audi S4 Sedan 3.0L V6 Turbo
2024 Audi S5 Hatchback 3.0L V6 Turbo
2024 Audi A4 Quattro Sedan 2.0L l4 Turbo
2024 Audi A5 Quattro Coupe 2.0L l4 Turbo
2024 Audi RS5 Coupe 2.9L V6 Turbo
2024 Audi A5 Hatchback 2.0L l4 Turbo
2024 Audi A5 Quattro Convertible 2.0L l4 Turbo
2024 Audi S5 Convertible 3.0L V6 Turbo
2024 Audi RS5 Hatchback 2.9L V6 Turbo
2024 Audi S5 Coupe 3.0L V6 Turbo
2019 Audi A5 Quattro Coupe 2.0L l4 Turbo
2020 Audi S5 Coupe 3.0L V6 Turbo
2020 Audi S4 Sedan 3.0L V6 Turbo
2020 Audi A4 Quattro Sedan 2.0L l4 Turbo
2019 Audi S5 Convertible 3.0L V6 Turbo
2020 Audi A5 Quattro Convertible 2.0L l4 Turbo
2019 Audi S5 Coupe 3.0L V6 Turbo
2019 Audi S4 Sedan 3.0L V6 Turbo
2020 Audi S5 Convertible 3.0L V6 Turbo
2019 Audi A5 Quattro Convertible 2.0L l4 Turbo
2020 Audi A5 Quattro Coupe 2.0L l4 Turbo
2020 Audi A4 Sedan 2.0L l4 Turbo
2017 Audi A5 Quattro Convertible 2.0L l4 Turbo
2018 Audi A4 Quattro Sedan 2.0L l4 Turbo
2018 Audi A4 Sedan 2.0L l4 Turbo
2017 Audi A4 Sedan 2.0L l4 Turbo
2017 Audi A4 Quattro Sedan 2.0L l4 Turbo
2017 Audi S5 Convertible 3.0L V6 Supercharged
2017 Audi A5 Quattro Coupe 2.0L l4 Turbo
2017 Audi S5 Coupe 3.0L V6 Supercharged
2018 Audi S4 Sedan 3.0L V6 Turbo
2019 Audi A4 Sedan 2.0L l4 Turbo
2019 Audi A4 Quattro Sedan 2.0L l4 Turbo
2018 Audi S5 Convertible 3.0L V6 Turbo
2018 Audi S5 Coupe 3.0L V6 Turbo
2018 Audi RS5 Coupe 2.9L V6 Turbo
2018 Audi A5 Quattro Coupe 2.0L l4 Turbo
2018 Audi A5 Quattro Convertible 2.0L l4 Turbo
2019 Audi RS5 Coupe 2.9L V6 Turbo
2022 Audi S5 Coupe 3.0L V6 Turbo
2023 Audi S5 Convertible 3.0L V6 Turbo
2019 Audi A5 Hatchback 2.0L l4 Turbo
2022 Audi A5 Quattro Coupe 2.0L l4 Turbo
2023 Audi S5 Coupe 3.0L V6 Turbo
2022 Audi A5 Hatchback 2.0L l4 Turbo
2022 Audi RS5 Coupe 2.9L V6 Turbo
2020 Audi A5 Hatchback 2.0L l4 Turbo
2021 Audi RS5 Hatchback 2.9L V6 Turbo
2021 Audi A4 Quattro Sedan 2.0L l4 Turbo
2022 Audi RS5 Hatchback 2.9L V6 Turbo
2021 Audi A5 Quattro Convertible 2.0L l4 Turbo
2023 Audi RS5 Coupe 2.9L V6 Turbo
2022 Audi A4 Quattro Sedan 2.0L l4 Turbo
2022 Audi A5 Quattro Convertible 2.0L l4 Turbo
2023 Audi A5 Hatchback 2.0L l4 Turbo
2021 Audi A5 Quattro Coupe 2.0L l4 Turbo
2023 Audi RS5 Hatchback 2.9L V6 Turbo
2021 Audi S5 Coupe 3.0L V6 Turbo
2023 Audi A5 Quattro Coupe 2.0L l4 Turbo
2022 Audi S5 Convertible 3.0L V6 Turbo
2021 Audi A5 Hatchback 2.0L l4 Turbo
2023 Audi A4 Quattro Sedan 2.0L l4 Turbo
2023 Audi A5 Quattro Convertible 2.0L l4 Turbo
2021 Audi S5 Convertible 3.0L V6 Turbo
2018 Audi A5 Hatchback 2.0L l4 Turbo
2019 Audi RS5 Hatchback 2.9L V6 Turbo
2021 Audi RS5 Coupe 2.9L V6 Turbo
2023 Audi S5 Hatchback 3.0L V6 Turbo
2022 Audi S5 Hatchback 3.0L V6 Turbo
2021 Audi S5 Hatchback 3.0L V6 Turbo
2019 Audi S5 Hatchback 3.0L V6 Turbo
2020 Audi S5 Hatchback 3.0L V6 Turbo
2018 Audi S5 Hatchback 3.0L V6 Turbo

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