Genuine OEM Audi Rubber Cuff with Fixing Parts and Grease, part number 4E0598203. This kit includes a protective boot, fixing clips, and specialized grease for a driveshaft joint. Its function is to prevent dirt, water, and debris from entering the joint while retaining the lubricating grease. Located on the driveshaft. Genuine OEM driveshaft boots are made from durable materials designed to withstand extreme temperatures and rotational forces.