Hi everyone. I need some help. the timing belt in my 2.3l (c70) slips off of a pully because the housing that holds the ball bearings in broke. i know its hard to explain, but if anyone could tell me the name of the pully that my finger is pointing to in the picture so i can order a new one that would be great. thank you for the help



here are some pics of the whats left of the housing for the ball bearings

 

That would be the Tensioner.
BUT You need to be very careful when installing and starting the car. If it slipped off you might have ben't valves. Then you will need to remove the Head and have the Valves replaced.

Also the Tensioner is a Manual tensioner. I would also buy and replace the idler pulley or that one will be next.