Genuine OEM Audi Turbocharger O-Ring, part number 059145625A. This sealing ring is designed to create a tight, leak-proof seal within the turbocharger assembly, crucial for maintaining proper boost pressure and preventing fluid or air leaks. It is typically installed at connection points or interfaces within the turbo system. Made from a resilient rubber compound, it measures approximately 0.075m in diameter. Using a genuine OEM O-ring ensures the correct material properties and dimensions for reliable sealing under high temperatures and pressures.