As a Grade 3 element

ensuring proper clearance within the fan shroud

the 421-661 delivers the precise milliamperage required to maintain the pilot flame across diverse combustion chambers

OEM Compatibility: Precision-engineered for a perfect fit in Williams Forsaire 5507 and 6007 series wall furnaces

Nidec-US Motors 1471P Motor R-407C As a Grade 3 elementThe Nidec US Motors 1471P is a versatile 1 10 HP blower motor engineered for multi voltage flexibility in residential and light commercial HVAC applications. Operating at 1050 RPM, this 42Y NEMA frame motor features a Permanent Split Capacitor (PSC) design that ensures efficient performance across 115 208 230V systems. As a veteran preferred HVAC replacement motor, the 1471P is the direct sub for legacy models like the US Motors 606 and D497,