Genuine OEM Audi Engine Mounting Stop Buffer, part number 4F0199339. This elastomer buffer is designed to absorb engine vibrations and limit excessive engine movement, contributing to a smoother and quieter ride. It acts as a critical component within the engine mounting system. Measuring 68mm long, 68mm wide, and 48mm high, it provides a precise fit. Using a genuine OEM buffer ensures the correct material hardness and durability to effectively dampen vibrations and withstand engine forces over time.