This part uses the following part numbers: Viessmann - 7828745 Neva lux - 21000605201100 Immergas - 1.022219 Junkers - 8705406264 The part is compatible with the following boilers: Viessmann Vitopend 100 WH1D Neva lux 8224 Immergas Mini 24 (before 2010) Junkers Euroline ZW23
