<p>This is a used OEM BMW Brake Booster Vacuum Hose / Line, part number 8664526, removed from a donor vehicle. This genuine hose connects the brake booster to the engine's vacuum source, supplying the necessary vacuum for power brake assist. A cracked or collapsed hose can cause a hard brake pedal, reduced stopping power, or a hissing vacuum leak. It fits multiple BMW models with 2.0L and 3.0L turbocharged engines, including B46 and B58 variants.</p><p>Fits 13 models across BMW (2019–2025); full list at wolfautoparts.com.</p><p><strong>OEM part number:</strong> 8664526.</p><p><strong>Condition:</strong> Used OEM, pulled in-house from a donor vehicle scanned with factory diagnostic tools; tested where possible, with per-part condition notes. 30-day returns.</p>