Not sure what the part is called

A quick learner from Maspeth,NY says:
Hi, I have a window where the side "spring" i would say is broken. Not sure what the technical term is but I cant seem to find it anywhere. It is a white cassette like part that is on both the right and left side.
User submitted photos of window hardware.
Profile picture of Paul
Paul from SWISCO responded:
It's tough to tell what you have based on these pictures. The stickers don't tell us all that much. I believe you might have our S160-5 and S160-4 coil springs. However, I'd like to see your pivot shoe to confirm.
How to replace a window coil balance
How to replace a window coil balance
VIDEO
WATCH >
How to Replace a Triple Coil Balance System
How to Replace a Triple Coil Balance System
VIDEO
WATCH >
Removing a Triple Coil Window Balance
Removing a Triple Coil Window Balance
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.