Genuine OEM Audi Rear Bumper Locking Mechanism, part number 4KE807739. This mechanism is designed to engage and securely hold the rear bumper in its correct position, contributing to the vehicle's structural integrity and appearance. It is installed on the left side of the rear bumper assembly. Constructed from durable plastic, it measures approximately 0.15 meters in length and weighs 0.013 kg. Using a genuine OEM locking mechanism ensures precise fitment and reliable engagement, preventing bumper misalignment or detachment and maintaining factory-level quality.