While the FAN4078 is the official superseding part

By replacing the entire York centrifugal fan assembly rather than individual parts

Reliable Seating: Utilizes a non-metallic disc-to-metal interface to prevent the valve from sticking or freezing

The ASCO 8210G2-480V is a rugged 2-way normally closed solenoid valve engineered for reliable automation in high-voltage industrial and commercial fluid control systems

This is a specific 4-leg design

York S1-031-03027-000 Sensor 320819-301 While the FAN4078 is theThe York S1 031 03027 000 Sensor is a critical 10K Ohm thermistor designed for precision temperature monitoring across York, Coleman, and Luxaire HVAC systems. This genuine OEM York part features 6 inch leads and pre installed terminal connectors, facilitating a direct interface with the equipment control board. As a veteran grade HVAC temperature sensor replacement, it converts thermal data into accurate electrical signals, allowing the system to