Genuine OEM Audi Air Filter Housing Lock Bar, part number 8K0129797. This small but essential component is designed to securely fasten the air filter housing cover, ensuring that the air filter remains properly sealed within its housing. A secure housing prevents unfiltered air from entering the engine and protects the air filter from dislodging. It is positioned on the air filter housing assembly. This lock bar measures approximately 0.04 meters in length and weighs 0.0045 kg. Using a genuine OEM lock bar ensures precise fitment and the correct clamping force, preventing vibrations or accidental opening that could compromise air filtration.