The SCR system components include the:
โข reductant or Diesel Exhaust Fluid (DEF)
โข reductant tank
โข reductant dosing module
โข reductant pump and heater assembly
โข reductant pressure line heater assembly
โข reductant tank heater and sensor assembly
โข reductant purge valve
โข reductant pressure sensor
โข NOx sensor and module
โข exhaust mixing system.