Genuine OEM Audi Fuel Injector Sealing Washer, part number 03L130519. This washer is specifically designed to create a tight, leak-free seal for the fuel injector within the fuel system. It is positioned at the base of the fuel injector to prevent fuel or combustion gases from escaping. Weighing approximately 0.0013 kg and measuring 0.012m x 0.012m x 0.003m, this copper-colored washer is vital for engine performance and safety. Choosing a genuine OEM part ensures the precise dimensions and correct material composition required for a durable, leak-free seal in the high-pressure and high-temperature environment of the fuel system.