Genuine OEM Audi Air Filter Connecting Pipe, part number 1K0129684. This corrugated plastic pipe is designed to connect the air filter housing to the engine intake, facilitating the flow of filtered air into the engine. Its precise routing and durable construction are crucial for maintaining an airtight intake system. Using a genuine OEM pipe ensures proper fitment and material integrity, preventing unfiltered air from entering the engine and protecting internal components.