Bingo! thanks shortsguy! 6010170203 it is.
And odd thing, I put another item in online to order from dealer, a 603 valve cover gasket which is NLA. Lots of aftermarket ones avail tho.
thanks to others for offers, etc.
I don't want to let this head go missing a couple collars. PO had trouble getting two of them off so were discarded.
DDH

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!