Need 4 plastic balance assembly depicted in the photo.

Thanks for posting. I can't be 100% certain without seeing your pivot shoe, because the identity of the pivot shoe is what determines the identity of all the components in a coil balance system. That said, I believe you might have something like our 15-111 Pivot Shoe; which means you have Series 160 Coil Springs. These can be housed in something like our 15-150Q Coil Quad Support. Take a look and see if you think this is what you need.