The Elring Engine Valve Stem Seal Set - 308970 is a set of high-quality seals designed specifically for use in engines. These seals are used to prevent oil from leaking out of the engine through the valve stems. They are made from durable materials and are designed to fit perfectly in the engine, ensuring a tight seal. This set includes all the necessary seals for a complete replacement, making it a convenient and cost-effective solution for maintaining the performance and efficiency of your engine. With this set, you can be confident that your engine will run smoothly and efficiently without any oil leaks.