Yeah something beat the plug out. Found part of a spring in the debris also. It's headed to Exergy tomorrow for an autopsy.That’s the freeze plug on the pump and those parts probably knocked it out.
Shows how long I've been messing with stroker pumps. My old 10mm was a 2015 based pump and still is kicking to this day. It's got around 70k miles on it now in a friends truck.back 5-6 years prior to those pumps being built, that wasnt uncommon