3/4-16 Magnetic Drain Plug AP-09 Contact us or visit our search engine for application info. Easy to install. Replaces your existing engine oil drain plug. Includes 1 washer. Order extras -Part # SW-09 Removes ferrous metal from the engine oil that can lead to damage. Extends the life of your engine. The Gold Standard in Engine Protection! Accept NO substitutions. Installed in the factory on high-end vehicles. We bring that superior engine protection to you!