Beckett Igniter FB3 Head 321042-401 What models is this part

What models is this part commonly found in

The robust brass and stainless steel construction within this HVAC gas valve kit provides the reliability required for high-efficiency residential heating

Smith 100233488 Fan Assembly is a critical combustion component designed for high-efficiency commercial boiler systems and water heaters

Attempting to use a bushing or forcing a fit can lead to imbalance and system damage

Beckett Igniter FB3 Head 321042-401 What models is this partThe Beckett Igniter FB3 Head (Part Number 3188103) is a purpose built oil burner replacement part designed for high voltage ignition systems. Engineered for precision alignment, this FB3 firing head ensures consistent spark to fuel contact, which is critical for maintaining high combustion efficiency and preventing intermittent lockouts. As a direct OEM replacement igniter head, it fits seamlessly into Beckett AF and AFG burners, allowing technicians