The Corteco Valve Stem Seal Set - 19031077 is a set of small, circular seals that are used to prevent oil from leaking out of the valve stem in an engine. These seals are made of high-quality materials and are designed to fit securely and tightly around the valve stem, creating a tight seal that prevents oil from escaping. This product is essential for maintaining the proper functioning of an engine and ensuring that it runs smoothly and efficiently. It is compatible with a variety of vehicles and is a reliable and durable solution for preventing oil leaks.