What's this on oil pan magnet?

[Texasdude74]

(11-18-2016 )gearhead Wrote:  Have you replaced the high pressure pump or anything in the fuel system

Truck was bought used. '13 Pete 389 car hauler 485hp. It was a fleet truck, he doesn't know much on its history other than it was supposed to have been rebuilt. Probably just liners and pistons. Speedco found this at the first oil change and he posted to Facebook to see if anyone knew what it was. Most seem to think it's an injector tip, but I'm certain it's not. But I don't know what it actually is.