Genuine OEM Volkswagen fuel rail, part number 057130090AB. This component acts as the central distribution manifold for the fuel injection system, supplying fuel to the individual injectors at consistent pressure. It is engineered to maintain structural integrity under high-pressure conditions. Genuine OEM fuel rails are manufactured with precise internal dimensions and mounting points to ensure a perfect fit and reliable fuel delivery, which is essential for maintaining correct air-fuel ratios and engine efficiency.