Are these parts the same?

[deadmau5]

The part circled in the top picture and item 14 in the second picture. I'm pretty certain it's the same part.

 

[Foxspeed]

isnt it a steel insert in the hub for the track rod end?

will stop the item working loose and splitting the alloy hub arm

 

[deadmau5]

'Clio III steering arm bush' is the description.

Your description of its job sounds exactly like the problem in question!