Emily from SWISCO responded:
May 23, 2023
Hello there! Thank you for reaching out to us. I suspect you may have the 15-177 pivot shoe which is designed to use the S152 coil springs. This part measures 1-1/4" wide and 9/16" thick so I recommend you remove your old pivot shoe from the window track to confirm the specifications align. I can't be certain since your pivot bar is broken but our 26-226 comes to mind. Take a look and see how the dimensions compare with an undamaged version. Alternate image for 15-177
End view of the 26-226 pivot bar
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