Genuine OEM Audi seal, part number 07L103121E. This component is designed to provide a reliable, leak-proof seal within the engine block assembly. It is engineered to withstand high temperatures and pressures while maintaining its structural integrity over time. Genuine OEM seals are critical for engine performance, as they are manufactured with the exact material composition and dimensions required to prevent fluid leaks and maintain internal pressure, ensuring the longevity of your engine components.