Genuine OEM Porsche Brake Vacuum Hose Line, part number 97035557123. This hose is a critical component that supplies vacuum pressure to the brake booster, enabling power-assisted braking. Proper vacuum supply is essential for a responsive and effective braking system. Genuine OEM vacuum hoses are designed with specific materials and dimensions to ensure reliable vacuum transfer and long service life, maintaining the safety and performance of your vehicle's brakes.