Verify your original part number or specific furnace model compatibility with a technician before installation

When performing a teardown or boiler maintenance

the EK-165S features 5/8" sweat (ODF) solid copper connections

While highly accurate

Williams P043800 Pilot Generator 320734-701 Verify your original part numberThe Williams P043800 Pilot Generator is an essential OEM thermoelectric component specifically engineered for the Williams Monterey Top Vent Furnace 250 and 350 series. As a critical part of the furnace control assembly, this high grade thermocouple replacement converts thermal energy from the pilot flame into the millivoltage required to operate the gas valve without an external power source. This millivolt generator features heavy duty construction