Carrier KR11AZ506 Blower Pulley 320734-701 If you are verifying a

If you are verifying a York heat exchanger part number for a service contract or emergency repair

two signal inputs are fed to the ports

the internal snap-action mechanism is non-positional

It only closes when electrical power is applied

including 50HJ502179

Carrier KR11AZ506 Blower Pulley 320734-701 If you are verifying aWhen you're out in the field servicing a Carrier, Bryant, or Payne air handler or rooftop unit, ensuring the blower system maintains precise airflow is non negotiable. The Carrier KR11AZ506 Blower Pulley is a Factory Authorized Part designed to hold exact tolerances. This single groove pulley features a 4 3 4 inch outer diameter (OD) and a 5 8 inch bore, specifically engineered for power transmission within commercial and residential belt drive