Need some help please I've broken something

[astrawrb]

hi all, I'm in desperate need of help. Last week my cam belt stripped and did some damage (A4 pd130) I've replaced all damaged parts and when installing the camshaft I've snapped a lug off the coupler or gear on tandem pump. Does anyone know what this part is called and can it be changed. I'm fed up and need some help. cheers gaz

 

[quattrogone]

I can't help you out but maybe post in "general automotive chat" section.