EJU100252 is the part & if you buy a new example of this item from one main suppliers they will ask you to part with a healthy slice of £45-00.
It is referred to as a left hand weatherstrip finisher & I'd be looking on e-bay where the dint in your wallet will not be quite as unhinged.
There was a time when the plastics & rubber items on scrap cars were an irritant for the scrappy, it got in the way of the money bits & stuff like these could be had for next to nothing.
I well remember chatting to my pet scrappy whilst he loaded three crushed f & tf's on his truck; I'd like to bet six of those were carted away that day, along with four hydragas spheres..
M