This product is a genuine Porsche engine valve spring retainer designed for use in Boxster, Cayman, and 911 models. It is an upper retainer that helps to keep the valve spring in place and maintain proper engine function. The part number for this product is 9A110512100. It is a high-quality, OEM replacement part that is designed to meet the standards and specifications of Porsche vehicles. It is made of durable materials and is built to last, ensuring reliable performance and longevity. This product does not contain any newline characters and can be used as input in another API call.