Magnetic sump plug, for the later lip seal sump.
Constructed from a 303 stainless steel body that houses the strongest, highest temperature, N45SH Neodymium magnet available. The magnet is secured in place with a proprietary two step process, and will never come out. The strong magnet collects any ferrous swarf or potentially harmful particles missed by the oil filter. The magnet will hold any collected metal firmly, unaffected by temperature variation, until the oil is changed.