ACV 537DX016 electrode replaces 537DZ043

Discontinued – ACV Ignition Electrode A18 (A39), replaced by 537DZ043. The original A18 (A39) ignition electrode has been replaced by 537DZ043 , offering enhanced spark reliability for modern ACV boilers. Previously compatible with: Prestige 100 MK4 Prestige 120 V14 HeatMaster 100 HeatMaster 120 Delta Pro 85 Upgrade to 537DZ043 for: New-model compatibility Extended durability Exact OEM fit