This kit is a replacement transformer for valves that have already been upgraded to the new transformer (R0861600) or Ultraflex2 valves that were manufactured from July 2019 and present.

If your Ultraflex valve has an older transformer, either the 1-7-73 or the 1-9-168 transformer then you would need to upgrade it with kit R0861600 first. This kit is only to replace already upgraded/newer transformers.