This sealed pack of 4 Carquest Viton PS44 valve stem seals is perfect for your marine boat engine. These black seals are designed for the intake side and are made of high-quality materials to ensure reliability and durability. They are suitable for use in various engines and are easy to install. The package includes 5 valve stem seals and is a great value for money. They are unfinished and can be painted if needed. These seals are a must-have for any boat owner looking to maintain their engine's performance without worrying about leaks. Add these Carquest Viton PS44 valve stem seals to your engine today and enjoy a smoother ride.