Here is a little Cup for the upper screw of the dumper of Dacia Duster 2018. I have seen to put this cup to prevent rust on the thread and nut. Please fill spray oil or grase over the screw and nut of the dumper before fitting.
printed at 235°nozzle - 40° bed - 20mm/sec
The cup was made firs drawing the part of the dumper to cover, then subtract it to the external shape to obtai a perfect fit.