The Reinz Timing Chain Guide Bolt Seal - 417018000 is a small, circular rubber seal designed to fit onto the bolt of a timing chain guide. It is used to provide a tight and secure seal between the bolt and the timing chain guide, preventing any leaks or damage to the engine. This seal is specifically designed for use with Reinz timing chain guide bolts and is made from high-quality materials to ensure durability and reliability. It is an essential component in the proper functioning of a timing chain system and is compatible with a wide range of vehicles.