The Elring Engine Valve Stem Seal Set - 152390 is a set of seals specifically designed for use in an engine's valve stems. These seals help to prevent oil from leaking out of the valve stem, which can cause damage to the engine and reduce its overall performance. The set includes all necessary seals for a complete replacement, ensuring that the valve stems are properly sealed and functioning. This product is a reliable and high-quality option for maintaining the health of an engine and ensuring its longevity.