Saab 99 90 900 Wheel-arch trim moulding
[TRM204]

Fitted one of these to an accident- damaged arch, 2 more to go through age deterioration. The new ones are not quite the same as the originals in structure, being all plastic whereas the originals are a plastic / aluminium laminate and I suspect softer and easier to fit.
Fitting was achieved by lubrication [grease: originals had a bead in the base] and a length of smooth washing line [not string: a tip from a professional window fitter] The 5th star is in reserve for the performance in service!