The 3-piece square nylon slider has self destructed on the passenger side door regulator in my 84 190E. It hold s the rear sliding arm of the window regulator in the bottom horizontal track of the window. (its not the jaw that goes up and down in the veritcal track))

What is the part number of this piece? Is it a dealer only item?

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Patrick Leber
'84 190E 2.3
'83 Porsche 944 (track car)
'84 Porsche 944 (parts car)
85.5 Porsche 944 (sled)