This bush is a genuine version of
CRC5329 and sold individually.
There are 2 of these bushes fitted at either end of the engine stabiliser on all cars upto 1996 except some very early cars which had large single bushes fitted. From 1996 rover introduced a single large silent block type bush
KKF101320 which will fit your
21A1109 or
21A1817 upper engine stabiliser bar.
See also our
KKF101320EVO.