I've had a droopy driver side sun visor since I bought the car, and the time has come to finally sort it out!

I've attached an image of the hinge part, I don't know the part number or what it's technically called so I can't find the part online. Can someone point me in the right direction please?

 

You won't find it online as you can only get the complete visor.
You also don't mention which 2008 model you are referring to??

SUN VISOR ASSEMBLY-RIGHT
WRX STI 92011FG162JC
WRX 92011FG092ME

 

My 08 STI had the same problem when I bought it 3 years ago. After trying to fix it, I bought a new one. I was told I had the last in UK by my local parts guy. Sorry.
Parts availability is beginning to become a problem now my car's passed 10 years old. Eventually 2nd hand parts will also become rare. That could be a real problem if it's an MOT or essential item.