Genuine OEM Audi Rear Bumper Foam, part number 4J3802972. This foam component provides crucial impact absorption for the rear bumper, helping to dissipate energy during a collision and protect the vehicle's structure. It is positioned behind the rear bumper beam. Measuring approximately 1.29 meters in length, it is specifically shaped for its intended location. Choosing a genuine OEM bumper foam ensures it meets factory safety standards, providing the correct density and shape for effective energy management.