Genuine OEM Volkswagen CV Joint Boot Kit, part number 12E498201A. This kit is essential for protecting the constant velocity joint from external elements such as dirt, water, and debris, thereby preventing premature wear and potential failure. It is indicated as component 21 in the diagram. The kit's components are made from durable materials to withstand road conditions. Genuine OEM quality ensures a perfect fit and long-lasting protection for the CV joint.