The BOSCH fuel pump relay (OEM Part Number: 0332019456) is a critical component located within the vehicle's electrical system. It is typically found near the fuel pump, ensuring proper communication between the ignition switch and fuel pump. This relay plays a vital role in activating the fuel pump, allowing fuel to flow from the tank to the engine. Common issues such as starting problems, sputtering, or engine stalling may indicate a worn or damaged relay. This authentic OEM part is compatible with various makes and models, particularly in the VW and Audi lineups from the late 1990s to early 2000s. When replacing, this relay is essential for restoring reliable engine performance.