The Fel-Pro Premium Valve Stem Seals 5P 591, Set of 16, Rubber are high-quality intake valve seals designed for ensures a secure and sealed connection. Made by the trusted brand Fel-Pro, these seals are engineered to provide excellent performance and durability. With the OE/OEM Part Number SP 591 and Manufacturer Part Number 5P 591, these seals are a reliable choice for maintaining proper valve function in your vehicle.