Window regulator
This assembly is called a coil balance. We sell the individual parts separately.
The key to identifying any coil balance is to reference the pivot shoe, first. Once you know what that is, everything else is very easy to identify.
Your pivot shoe looks like our 15-199, but there are enough subtle differences in the design to make me hesitate. If I were you, I would remove the original from the window and compare its size and design to our part. That will let you know for sure.
If they match, then your next step is to measure the spring. The two compatible options with the 15-199 are the 3/8" Series 165 and the 1/2" Series 160. These are the only two choices, so all you have to do is measure the width of the band to verify the better option.