The hub is machined for a 3/8-inch bore

ensuring correct fitment without bracket modification

leak-free connection to existing vacuum hoses

You can wire up to three sensors together to provide an average temperature reading to a single compatible thermostat

the strip is placed directly into the slider track to "lock" or "limit" the lever movement

Nordyne OL29388 Fan Timer Board 30067439-890 The hub is machined forThe Nordyne OL29388 Fan Timer Board is a critical integrated control component designed for intermittent spark ignition (ISI) furnace systems. As the direct replacement for ST9103A1051, this board manages the timing of the circulator blower fan, ensuring optimal airflow and heat exchanger cooling cycles. For technicians troubleshooting HVAC furnace control board failures, this OEM part provides a reliable solution for restoring precise furnace fan