Bearing damage is a serious concern for any high-performance or high-mileage engine. Mishimoto Magnetic Oil Drain Plugs remove metal fragments in engine oil, thus extending and protecting the life of your engine. These oil drain plugs are constructed from billet 6061 aluminum with a powerful neodymium magnet. This magnet collects bearing and other harmful metallic fragments in engine oil, effectively removing them from circulation. This drain plug features a robust 24mm hex head and precise, durable threads for consistent use without stripping. Mishimoto Magnetic Oil Drain Plugs include a dependable dowty seal for superior protection against leaks. This M14 x 1. 5 oil drain plug fits the GMC/Chevrolet Duramax trucks, and many others.