Genuine OEM Audi Engine Vacuum Pipe, part number 079133778D. This pipe is an essential part of the engine's vacuum system, responsible for carrying vacuum pressure to various engine components. It ensures proper operation of systems like the brake booster, emissions controls, and intake manifold flaps. Constructed from durable, heat-resistant materials, it is designed for precise routing within the engine bay. Using a genuine OEM vacuum pipe guarantees correct pressure delivery, leak-free connections, and resistance to engine bay temperatures and fluids, crucial for maintaining engine efficiency and reliability.