Genuine OEM Volkswagen Brake Fluid Reservoir, part number 5QE611301. This component serves as the storage tank for brake fluid, essential for the hydraulic braking system. It is typically located in the engine compartment, connected to the master cylinder. The reservoir ensures an adequate supply of fluid for brake operation and allows for visual inspection of fluid levels. As a genuine OEM part, it is manufactured to precise standards for a perfect fit and reliable performance, crucial for safe braking.