2019-2020 Audi A6/S6 Power Brake Booster 4K0612103
OEM Part #: 4K0-612-103 (4K0612103)
Actual photo
The exact part you’ll receive — not a stock photo.
$33.99
Used
Donor2019 Audi A6 · 3.0L
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Genuine OEM Used
SKU: 567403
Donor Vehicle: 2019 Audi A6 · 3.0L
2 photos
$33.99
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This is a used genuine OEM Audi power brake booster, part number 4K0612103, also superseding 4K0612107. It amplifies the force from your brake pedal to the master cylinder, providing the hydraulic assist needed for safe, consistent stopping. A failing booster often causes a hard, stiff pedal or a noticeable loss of braking power, sometimes accompanied by a hissing air leak from the vacuum side.
Specifications
| Fits Vehicle Model | A6, S6 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4K0-612-103 (4K0612103) |
| Compatible OEM Part No | 4K0-612-107 |
| Category | Brake Booster |
Compatible Vehicles
Fits 5 vehicle configurations across 1 make, 2019-2020.
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 5 vehicle configurations — 5 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2019 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | For Vehicles With Production date Up To 09/02/19 |
| 2020 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | For Vehicles With Production date Up To 09/02/19 |
| 2020 | Audi | S6 | Sedan | 2.9L V6 Turbo | For Vehicles With Production date Up To 09/02/19 |
| 2020 | Audi | A6 | Quattro Sedan | 3.0L V6 Turbo | For Vehicles With Production date Up To 09/02/19 |
| 2019 | Audi | A6 | Quattro Sedan | 3.0L V6 Turbo | For Vehicles With Production date Up To 09/02/19 |