Any ideas what this is?

[alexessex_7]

Noticed this has snapped under the bonnet, the washer and screw is still in tact ( just behind the battery ) makes a very slight rattle when I go over a bump. Will look for another one when I know what the part is called ?

Or maybe just put something imbetween to stop is making a racket ?

 

[alexessex_7]

Looking at the picture it's not very clear but too late now to take another pic, basically that large piece of black metal should be attached to where that washer Is, but has come away now making a rattle

 

[ParisPeach]

Ecu bracket common issues.

 

[Trackslag172]

Just stick a self drilling screw through it like I did