Hilarious.

I found another similar laughable thing - BMWs are famous for leaking from various gaskets, The only brand of oil filter housing gasket that doesnt leak very soon on the new cars is the one made in either Vietnam or Japan

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

Is there a company/shop that reconditions them then supplies them to the dealers in lieu of NOS? If so, what parts do they replace in the pump?

I would probably guess the bearing and seal as those seem to be the only wear items on the pump

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1990 190E 3.0L

I put a graf in my w124.. no problems. The original with 300k miles was still good it’s the gaskets that started to fail. I kept it as a spare

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1993 e300
1995 e320
1994 e320
2006 s500 4matic
2004 Jeep wj overland
2001 Ducati 748
2004 Honda shadow aero