Dyane rear door check-strap.
Original Citroen (new old stock) part in original Citroën bag, with part number on: ‘AY84216’.
This is for a rear door, with 121mm between hole-centres. (Front ones were longer: 129mm).
(We don’t have the longer front ones but Chevronics Centre has a few originals in stock: AY84178a).