Project Mu magnetic drain plugs will extend the life of your engine and tranny. It helps to keep the excess metal particles that are created from normal engine and transmission wear from floating freely in your fluids. It is designed to attract and hold metal particles to help prevent them from causing excess wear that reduces engine and tranny life. Available for Toyota, Nissan, Honda, Mitsubishi, Mazda, and Subaru applications. Each magnetic drain plug comes with OEM factory gasket for a secure seal.