Lower window sash single coil spring balance

Question

Hi, I want to replace the lower window sash balance assemblies on two windows (4 each)(2 left, 2 right). The originals are from 2006 and I have uploaded two photos (front and back). There is no spring stamp number that I can find. If I have to order individual parts for each balance Iam willing to do so. Some of the parts are broken so new parts or assemblies is preferred.
Thank you,
Robert

Casey · Accepted Answer

Hello,

I agree that your pivot shoe resembles the 15-180, which uses the Series 190 coil springs. These coil are compatible with the 15-186 support and 15-182 bushing. As long as the specifications match, you should be good to go. Thanks for posting!

Alternate image for 15-180