Industrial Durability: Specifically rated for the high-torque and high-pressure demands of commercial water regulation

Key Benefits Multi-Speed Flexibility: Features a 3-speed design to allow for precise airflow adjustments across heating and cooling cycles

4 inches allows technicians to fine-tune belt-driven fan speeds

The P499 series utilizes thin-film sensing technology to maintain signal stability across a wide temperature range

Carrier KR51BF415 Motor Pulley 321894-709 Industrial Durability: Specifically rated forThe Carrier KR51BF415 Motor Pulley is a precision engineered fixed bore drive component designed for specific Carrier, Bryant, and Payne air handling units and rooftop systems. Featuring a 7 8 inch bore and a 4. 15 inch outside diameter, this Type A belt pulley (also compatible with AX section belts) provides a consistent 1: 1 or reduced drive ratio to maintain precise blower wheel RPMs. Constructed from high grade cast iron, it offers superior