Fse Part , What is it , and where is it from ???

[Gerko]

Hi Gents can anybody identify the below part, Whilst fiiting the new timing chain i removed the plastic tensioners and found this just behind the bottom timing chain gear.

I cannot see anywhere it has come from and the service manual shows nothing like it, It looks like the chain has been rubbing it for a while so i presume its been there for a while.

Its obviously from somewhere ? has to be from the head down to the bottom gear , small area really. It looks like it sits on a lug or pin and is possibly retained by a spring.

Any Clues