The Genuine Porsche Power Steering Reservoir Cap (Cayman) - 98731422300 is a replacement cap for the power steering reservoir on a Porsche Cayman. This cap is designed to fit securely on the reservoir and prevent any leaks or spills. It is made from high-quality materials and is an exact match for the original cap, ensuring a perfect fit and function. This cap is an essential component for maintaining the proper functioning of the power steering system in your Porsche Cayman.