Genuine OEM Volkswagen Brake Master Cylinder Repair Set, part number 1S1611019FREP. This set contains seals and components to rebuild a faulty brake master cylinder, restoring its hydraulic function. The brake master cylinder is a critical component of the hydraulic braking system. Genuine OEM brake master cylinder repair kits ensure precise fitment and material compatibility, crucial for maintaining the integrity and performance of your vehicle's braking system.