Genuine OEM Audi Engine Air Intake Hose, part number 079129615D. This corrugated plastic hose is positioned at the rear of the engine's air intake system, connecting it to the engine. It is designed to channel clean, filtered air into the engine, crucial for combustion and performance. Using genuine OEM intake hoses ensures precise fitment, proper sealing, and resistance to engine bay temperatures and vibrations, preventing air leaks and maintaining engine efficiency.