The Genuine Porsche Engine Valve Spring Retainer Lower - 94810515301 is a high-quality replacement part for Porsche engines. It is designed to securely hold the valve spring in place, ensuring proper engine function and performance. This retainer is made from durable materials and is an exact fit for the specified Porsche engine model. It is a genuine OEM part and meets all factory specifications and standards. This product is essential for maintaining the proper tension of the valve spring, which is crucial for the engine's smooth operation.