2013-2018 Audi A8/S8 Brake Vacuum Hose / Line 4H0611931AC
OEM Part #: 4H0-611-931-AC (4H0611931AC)
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The exact part you’ll receive — not a stock photo.
$28.49
Used
Donor2015 Audi A8 · 4.0L
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Genuine OEM Used
SKU: 665398
Donor Vehicle: 2015 Audi A8 · 4.0L
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$28.49
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Audi brake vacuum hose / line 4H0611931AC — a used genuine OEM part. Also replaces 4H0611931AA, 4H0611931AT, and 4H0611931AL. This vacuum line supplies the brake booster on 4.0L V8 twin-turbo (EA825) engines in A8 Quattro and S8. A cracked or leaking brake vacuum hose can cause a hard brake pedal or loss of power brake assist. Replacing a deteriorated hose restores proper pedal feel and braking performance.
Specifications
| Fits Vehicle Model | A8, S8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4H0-611-931-AC (4H0611931AC) |
| Compatible OEM Part No | 4H0-611-931-AA, 4H0-611-931-AT, 4H0-611-931-AL |
| Category | Brake Booster |
Compatible Vehicles
Fits 15 vehicle configurations across 1 make, 2013-2018.
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 15 vehicle configurations
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2015 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | |
| 2015 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2016 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2015 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2016 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2017 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2017 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2018 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2018 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2013 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | |
| 2013 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2013 | Audi | S8 | Sedan | 4.0L V8 Turbo |