Dosatron D8R Injection Stem Assembly Replacement Part - Compatible with Dosatron Fertilizer Injectors - Perfect for Agricultural, Hydroponic, and Irrigation Systems

(8CD031VFII) Injection Stem Assembly For Dosatron D8R Medicators/Injectors. This is for D8R units with a serial number over 0350000. If they have an older serial number then they must order the 8CD024VFII which comes with a diffuser and it will fit any D8R unit.