The National (Federal-Mogul) 4189H Automatic Transmission Torque Converter Seal is a high-quality transmission seal designed to ensure proper sealing and functionality of the automatic transmission system in vehicles. Manufactured by Duralast, this seal comes with a 1-year manufacturer warranty for added peace of mind. With a focus on durability and reliability, this product is a crucial component for maintaining the performance and efficiency of your vehicle's transmission system.