Pivot balance coil

Thanks for posting! Your pivot housing looks a lot like the 15-087 coil housing pivot. Carefully compare the dimensions to your existing hardware to confirm that this is the correct replacement.

Detail of 15-087

This coil housing is compatible with the Series 180 coil balance spring. I am uncertain if yours is stamped with a 6 or a 9 so you'll need obtain the exact weight of your sash to determine the coils you'll need. If it is 6lbs, you'll need the 12lb and i 18lbs, you'll need the 9lb coils.

Yes, that is possible. That would be the Series 180 coil balance spring. As explained, I am uncertain if yours is stamped with a 6 or a 9 so you'll need obtain the exact weight of your sash to determine the coils you'll need. If it is 6lbs, you'll need the 12lb and i 18lbs, you'll need the 9lb coils.

The plastic piece appears to be part 16-031,