Genuine OEM Audi Engine Air Supply Hose, part number 3C0129654N. This critical component delivers fresh, filtered air from the air filter housing to the engine's intake system, supporting efficient combustion. It is located within the engine's air intake path. Made from durable, heat-resistant plastic, this hose weighs 0.4 kg. Opting for a genuine OEM air supply hose guarantees precise fitment, correct routing geometry, and resistance to engine bay temperatures and vibrations, preventing air leaks and maintaining engine efficiency.